Relevant bibliographies by topics / Vitamin A in human nutrition

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Vitamin A in human nutrition'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 July 2024

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Journal articles on the topic "Vitamin A in human nutrition"

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Kravtsova, E. I., I. I. Kutsenko, I. O. Borovikov, and S. K. Batmen. "Nutrition and nutritional support during pregnancy." Russian Journal of Woman and Child Health 3, no. 4 (2020): 233–41. http://dx.doi.org/10.32364/2618-8430-2020-3-4-233-241.

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Increased nutrient needs during pregnancy are accounted for by physiological changes in the maternal organism and requirements of the developing and growing baby. They are realized through a number of physiological adaptations in nutrient metabolism. Physiological pregnancy and adequate fetal development are impossible in deficient nutrients, vitamins, and microelements. Randomized clinical trials in pregnant women have demonstrated that nutrient deficiency in the maternal organism results in pregnancy complications and health problems in the newborn but also accounts for a wide range of chronic disorders among the offspring. Probiotics improve digestive health in pregnant women and affect epigenetic programming of human homeostasis that predisposes to dysbiosis, allergies, and lipid and carbohydrate metabolism disorders. Prevention of vitamin and probiotic deficiency during pre-pregnancy planning, pregnancy, and breastfeeding focuses on ensuring that vitamin intake from food meets the requirements for these nutrients. Complex vitamin supplements containing probiotics treat alimentary deficiency and contribute to the favorable course of pregnancy and fetal development. KEYWORDS: nutrition, woman’s health, pregnancy, vitamins, probiotics, nutrient deficiency. FOR CITATION: Kravtsova E.I., Kutsenko I.I., Borovikov I.O., Batmen S.K. Nutrition and nutritional support during pregnancy. Russian Journal of Woman and Child Health. 2020;3(4):233–240. DOI: 10.32364/2618-8430-2020-3-4-233-241.
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SUTTIE, J. W. "Vitamin K and human nutrition." Journal of the American Dietetic Association 92, no. 5 (May 1992): 585–90. http://dx.doi.org/10.1016/s0002-8223(21)00681-7.

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Muller, D. P. R. "Vitamin E and Human Nutrition." Journal of Tropical Pediatrics 34, no. 3 (June 1, 1988): 100. http://dx.doi.org/10.1093/tropej/34.3.100.

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Muller, D. P. R. "Vitamin E and Human Nutrition." Journal of Tropical Pediatrics 34, no. 3 (June 1, 1988): 98–99. http://dx.doi.org/10.1093/tropej/34.3.98.

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Azzini, Elena, Tiziano Furini, Angela Polito, Luca Scalfi, Alessandro Pinto, Valeria Gasperi, and Isabella Savini. "Vitamin Nutritional Status in Patients with Pancreatic Cancer: A Narrative Review." International Journal of Molecular Sciences 25, no. 9 (April 27, 2024): 4773. http://dx.doi.org/10.3390/ijms25094773.

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Due to the high mortality rate in Western countries, pancreatic cancer is considered one of the big killers, leaving patients and their families with little hope upon diagnosis. Although surgical and drug therapies are critical for cancer patients to improve life expectancy and alleviation of suffering, nutrition plays a key role in improving cancer treatment outcomes. This narrative review, conducted as part of the activities of the Italian Society of Human Nutrition (SINU) working group in oncology, focuses on the prevalence of vitamin malnutrition among pancreatic cancer patients. The results of the literature search show that pancreatic cancer patients are at a heightened risk of water-soluble vitamin deficiencies, particularly of vitamins B1, B3, and B6. Additionally, they also face an increased risk of deficiency of fat-soluble vitamins. Among these vitamins, the potential role of vitamin D in pancreatic cancer has garnered the most attention, with its plasma levels being identified as a significant factor in patient survival. Investigating vitamin nutritional status could provide valuable insights for incorporating nutritional approaches into the prevention and treatment of pancreatic cancer, thereby reducing the exacerbation of symptoms associated with the diagnosis.
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Semba, Richard D. "The Discovery of the Vitamins." International Journal for Vitamin and Nutrition Research 82, no. 5 (October 1, 2012): 310–15. http://dx.doi.org/10.1024/0300-9831/a000124.

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The discovery of the vitamins was a major scientific achievement in our understanding of health and disease. In 1912, Casimir Funk originally coined the term “vitamine”. The major period of discovery began in the early nineteenth century and ended at the mid-twentieth century. The puzzle of each vitamin was solved through the work and contributions of epidemiologists, physicians, physiologists, and chemists. Rather than a mythical story of crowning scientific breakthroughs, the reality was a slow, stepwise progress that included setbacks, contradictions, refutations, and some chicanery. Research on the vitamins that are related to major deficiency syndromes began when the germ theory of disease was dominant and dogma held that only four nutritional factors were essential: proteins, carbohydrates, fats, and minerals. Clinicians soon recognized scurvy, beriberi, rickets, pellagra, and xerophthalmia as specific vitamin deficiencies, rather than diseases due to infections or toxins. Experimental physiology with animal models played a fundamental role in nutrition research and greatly shortened the period of human suffering from vitamin deficiencies. Ultimately it was the chemists who isolated the various vitamins, deduced their chemical structure, and developed methods for synthesis of vitamins. Our understanding of the vitamins continues to evolve from the initial period of discovery.
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Ali, Mennatallah A., Hala A. Hafez, Maher A. Kamel, Heba I. Ghamry, Mustafa Shukry, and Mohamed A. Farag. "Dietary Vitamin B Complex: Orchestration in Human Nutrition throughout Life with Sex Differences." Nutrients 14, no. 19 (September 22, 2022): 3940. http://dx.doi.org/10.3390/nu14193940.

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The importance of B complex vitamins starts early in the human life cycle and continues across its different stages. At the same time, numerous reports have emphasized the critical role of adequate B complex intake. Most studies examined such issues concerning a specific vitamin B or life stage, with the majority reporting the effect of either excess or deficiency. Deep insight into the orchestration of the eight different B vitamins requirements is reviewed across the human life cycle, beginning from fertility and pregnancy and reaching adulthood and senility, emphasizing interactions among them and underlying action mechanisms. The effect of sex is also reviewed for each vitamin at each life stage to highlight the different daily requirements and/or outcomes. Thiamine, riboflavin, niacin, pyridoxine, and folic acid are crucial for maternal and fetal health. During infancy and childhood, B vitamins are integrated with physical and psychological development that have a pivotal impact on one’s overall health in adolescence and adulthood. A higher intake of B vitamins in the elderly is also associated with preventing some aging problems, especially those related to inflammation. All supplementation should be carefully monitored to avoid toxicity and hypervitaminosis. More research should be invested in studying each vitamin individually concerning nutritional disparities in each life stage, with extensive attention paid to cultural differences and lifestyles.
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Sauberlich, Howerde E. "Water-Soluble Vitamin Assays in Human Nutrition." American Journal of Clinical Nutrition 62, no. 5 (November 1, 1995): 1031. http://dx.doi.org/10.1093/ajcn/62.5.1031.

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Eitenmiller, Ronald R. "Water-soluble vitamin assays in human nutrition." Trends in Food Science & Technology 6, no. 2 (February 1995): 64–65. http://dx.doi.org/10.1016/s0924-2244(00)88962-1.

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Ahsan, Haseeb. "A Brief Overview and History of Human Nutrition and Health." Current Biochemistry 9, no. 2 (December 31, 2022): 98–103. http://dx.doi.org/10.29244/cb.9.2.5.

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Nutritional biochemistry is finally getting the attention it deserves, despite the fact that food and nutrition have been studied for centuries. In 1926, less than 100 years ago, the first vitamin was extracted and chemically characterized, leading to studies on single-nutrient deficiency diseases. Nutritional research on chronic diseases like cardiovascular disease, diabetes, obesity, and malignancies has hastened in the past few decades, especially after the year 2000. Nutrition has played a key role in the improvement of public health since the past 200 years, and is expected to play a major role in public health for the future. Keywords: nutrition, diet, history, food, agriculture.
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Dissertations / Theses on the topic "Vitamin A in human nutrition"

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Fradera, Ursula G. "Impact of vitamin A nutrified soybean oil on the vitamin A status of a selected community in Southern Brazil." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28986.

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Previous studies have revealed that marginal vitamin A deficiency poses a common public health problem among poor population groups in Southern Brazil. Nutrification programs in Guatemala (sugar) and in the Philippines (MSG) have resulted in improved vitamin A status, accompanied by positive changes in the anthropometric and general health status. Accordingly, the main purpose of the present pilot study was to evaluate the potential impact of vitamin A nutrified soybean oil on the vitamin A status of a selected community in Southern Brazil. Additional objectives were to assess the vitamin A and general nutritional status of the participants. The study was conducted in Vila Piratininga, a shanty town located on the periphery of Ribeirao Preto, a typical agricultural town in the sugarcane and coffee region of the state of Sao Paulo. Fifty-seven families were randomly assigned to experimental and control groups and were provided for four months with soybean oil that was either fortified with vitamin A (92,000 IU of retinyl palmitate per one litre can) or unfortified. To evaluate the impact of nutrification, biochemical and dietary indicators of vitamin A status were assessed before and after the supplementation. Dietary intake data were obtained from the female head of each household using the 24 hour recall method. Additional information on the usual consumption pattern of vitamin A containing foods was collected at the start of the study, using a food frequency questionnaire. Plasma retinol and (β-carotene levels of all subjects were analysed. Anthropometric measurements served as additional indicator of general nutritional status. Furthermore, throughout the intervention mothers, were questioned about the incidence of diarrhea and respiratory diseases among their children. Results from the serum vitamin A analysis at baseline confirmed that vitamin A deficiency was a public health problem among this low income population. Forty percent (control group) and 59% (experimental group) of preschool children, the most vulnerable age group, had low or deficient serum retinol concentrations. Plasma (β -carotene and dietary data showed that the intake of vitamin A and carotenoids from the rice and bean based diet was very low. The consumption of nutrified soybean oil increased the estimated daily vitamin A intake of the experimental group by 500% (p<0.001). However, this improved intake was not reflected in plasma retinol levels. Plasma vitamin A values of supplemented individuals dropped significantly (p<0.001) during the intervention, indicating that vitamin A nutrified soybean oil was not effective in improving their vitamin A status. The lack of response to supplementation in this study does not necessarily suggest that soybean oil is not a feasible vehicle for vitamin A nutrification. The fortified oil was well accepted by the participants and used daily for the preparation of meals; eventual losses of vitamin A during cooking and/or storage can be regarded as minimal. Therefore, this negative impact is more likely due to other factors. In populations with marginal vitamin A deficiency, as in Vila. Piratininga, the limitations of serum retinol levels as an accurate indicator of vitamin A body reserves should be appreciated. In addition, morbidity data revealed that infections were common among participating children. Infections may have impaired vitamin A absorption and utilization, increased requirements and consequently interfered with a successful nutrification. This was the first study to use vegetable oil as the carrier for vitamin A. Although this trial did not result in the expected impact on vitamin A status of the present study population, the feasibility of this vehicle should be further studied. In future investigations, the relative dose response test (RDR), which is a more sensitive index of vitamin A body reserves, should be performed on a subsample of the whole study population. Furthermore, concurrent reduction in the magnitude and severity of precipitating or contributary risk factors such as parasitic infestation, diarrheal and respiratory infections could improve the outcome of a nutrification intervention.
Land and Food Systems, Faculty of
Graduate
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Nelson, Monica. "Serum 25-Hydroxyvitamin D Response to Daily Oral Supplementation with 800 IU Cholecalciferol in Premenopausal Women Living in Maine." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/NelsonM2007.pdf.

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Wolberg, Charlene. "The influence of vitamin D3 supplementation on the components of the metabolic syndrome." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80088.

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Thesis (MNutr)--Stellenbosch University, 2013.
ENGLISH ABSTRACT: The possible advantages of vitamin D supplementation on various cardiometabolic conditions have been examined over the past few years. Vitamin D supplementation has possibly shown effects on each of the individual components of the metabolic syndrome i.e.: obesity, hypertension, dyslipidaemia and glucose intolerance. The aim of this systematic review was to ascertain whether or not vitamin D supplementation has any effect on any of the components of the metabolic syndrome. We searched the (Cochrane Central Register of Controlled Trails (Central), Medline, Science direct, ISI Web of knowledge and Scopus during 2010 (repeated search in 2012). We found four randomized controlled trials that met our inclusion and exclusion criteria. Three hundred and seventy three patients were included in these four randomized controlled trails comparing vitamin D supplementation with placebo. Duration of treatment was a minimum of 4 weeks, through to a maximum of on-year. The different trials looked at various components of the metabolic syndrome as outcomes. The results were not consistent amongst the trials and the results could not be combined in a meta-analysis due to heterogeneity in study design and outcomes measured. The current systematic review highlights the shortcomings in the published data and we recommend further trials be undertaken before vitamin D supplementation can be recommended as beneficial for patients with the metabolic syndrome.
AFRIKAANSE OPSOMMING: Die moontlike voordele van vitamien D-aanvullings op verskillende kardiometaboliese toestande is oor die afgelope paar jaar ondersoek. Daar is aangetoon dat vitamien Daanvullings uitwerkings het op elk van die individuele komponente van die metaboliese sindroom naamlik vetsug, hipertensie, dislipidemie en glukose-intoleransie. Die doel van hierdie sistematiese oorsig was om vas te stel of vitamien D-aanvullings enige uitwerking het op enige van die komponente van die metaboliese sindroom of nie. Ons het gedurende 2010 soektogte uitgevoer op die Cochrane Sentrale register van gekontroleerde proewe (Central), Medline, Science Direct, ISI Web of Knowledge en Scopus (soektog is in 2012 herhaal). Ons het vier verewekansigde gekontroleerde proewe wat aan ons insluiting- en uitsluitingskriteria voldoen het, opgespoor. Driehonderd drie en sewentig pasiënte is by die vier proewe ingesluit. Al vier proewe het vitamien D-aanvullings met plasebo vergelyk. Die duur van behandeling het van 4 weke tot een jaar gestrek. Die verskillende proewe het gekyk na verskillende komponente van die metaboliese sindroom as uitkomste. Die resultate van die onderskeie proewe was nie konsekwent nie. Die huidige sistematiese oorsig belig die tekortkominge in die gepubliseerde data en ons beveel aan dat verdere proewe onderneem word om vas te stel of dit nuttig is om vitamien D aanvullings vir pasiënte met die metaboliese sindroom aan te beveel, en of dit dalk skadelik kan wees.
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Simoneau, Nathalie. "Attributes of vitamin A and calcium-rich foods consumed in K'asho Got'ine, NWT." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27412.

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Over 60% of the population in K'asho Got'ine, NWT, obtained less than 2/3 of the Recommended Nutrient Intakes (RNI) for vitamin A and calcium, as reported in a previous nutritional assessment. Focus group discussions and a food preference assessment were conducted with adults in order to identify the cultural, ecological, and socioeconomic factors (food attributes) as well as the individual preferences which influence the consumption of vitamin A and calcium-rich traditional and market foods in K'asho Got'ine. The major attributes limiting intakes of traditional food rich in vitamin A and calcium included: lack of equipment for hunting/fishing; seasonality; distance traveled to obtain certain foods; occasional unhealthy appearance of food; no hunter/fisher in the household. The major food attributes reported as barriers to greater intakes of selected market foods were: cost, freshness, intolerance to certain items, availability and unfamiliarity. Foods that received the highest preference scores were rabbit liver, loche liver, and Canada goose meat (smoked/dried) for vitamin A-rich foods and connie eggs, rabbit flesh, woodland and barrenland caribou head for calcium-rich foods. Criteria for selection of traditional and market foods to promote in the community included: (1) convenience of the food; (2) difficulty to overcome barriers to increasing food consumption; (3) concentration level of contaminants in certain traditional food; and (4) food preference score. This study identified available and underutilized traditional and market foods rich in vitamin A and calcium which are most acceptable to the community, and may be promoted in future nutrition intervention programs.
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Wilkins, Jennie P. "Relationship between maternal prenatal vitamin use and infant iron status." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2381.

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Thesis (M.S.)--West Virginia University, 2002.
Title from document title page. Document formatted into pages; contains vi, 43 p. Vita. Includes abstract. Includes bibliographical references (p. 34-36).
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Clarke, Michael William. "Vitamin E metabolism in humans." University of Western Australia. School of Medicine and Pharmacology, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0191.

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[Truncated abstract] Vitamin E is comprised of a family of tocopherols (TOH) and tocotrienols. The most studied of these is [alpha]-tocopherol ([alpha]-TOH), as this form is retained within the body and any deficiency of vitamin E is corrected with this supplement. [alpha]-TOH is a lipid-soluble antioxidant required for the preservation of cell membranes and potentially acts as a defense against oxidative stress. Individuals who have a primary vitamin E deficiency such as low birth weight infants, secondary vitamin E deficiency due to fat malabsorption such as in abetalipoproteinaemia, or a genetic defect in TOH transport require supplementation. There is debate as to whether vitamin E supplementation in other patient groups is required. Vitamin E supplementation has been recommended for persons with FHBL, a rare disorder of lipoprotein metabolism that leads to low serum [alpha]-TOH and decreased LDL cholesterol and apolipoprotein B concentrations. We examined the effect of truncated apoB variants on vitamin E metabolism and oxidative stress in persons with heterozygous FHBL. We used HPLC with electrochemical detection to measure [alpha]- and [gamma]-TOH in serum, erythrocytes, and platelets, and GC-MS to measure urinary F2-isoprostanes and TOH metabolites as markers of oxidative stress and TOH intake, respectively. Erythrocyte [alpha]-TOH was decreased, but we observed no differences in lipid-adjusted serum TOHs, erythrocyte [gamma]-TOH, platelet [alpha]- or [gamma]-TOH, urinary F2-isoprostanes, or TOH metabolites. Taken together, our findings do not support the recommendation that persons with heterozygous FHBL should receive vitamin E supplementation. ... Sesame lignans are natural components of sesame seed oil and there is evidence that these lignans can inhibit CYP450 enzymes, in particular, those responsible for vitamin E metabolism. We hypothesised that sesame seed ingestion would increase serum [gamma]-TOH, lower plasma lipids and inhibit platelet function in human subjects with at least one cardiovascular risk factor. We used HPLC with electrochemical detection to measure [alpha]- and -TOH in serum and GC-MS to measure F2-isoprostanes and TOH metabolites as markers of oxidative stress and TOH intake, respectively. We used high-sensitive C-reactive protein as a measure of systemic inflammation. Platelet function was assessed using the PFA-100 platelet aggregation assay. Although serum [gamma]-TOH increased by 17%, we observed no effect on lipid metabolism, markers of inflammation, oxidative stress or platelet function following treatment with ~25 g/day sesame seeds for five weeks. Our findings challenge the hypothesis that sesame seed ingestion provides beneficial cardiovascular effects. In summary, we have studied the metabolism and transport of both [alpha]- and [gamma]-TOH in humans to evaluate the requirements for supplementation and the effects of vitamin E on platelet function and CYP3A4 activity. Specialised techniques using HPLC were developed to measure serum and cellular TOH concentrations both in supplemented and un-supplemented individuals. We also used GCMS to provide a sensitive, accurate assessment of TOH metabolites and midazolam pharmacokinetics in humans after vitamin E supplementation. We have examined the role vitamin E has on important biochemical endpoints, with emphasis on the implications for TOH supplementation in subjects at risk of CVD.
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Chaomuangbon, Sunthorn. "The Response of Elderly People to a B-6 Supplement." Thesis, North Texas State University, 1985. https://digital.library.unt.edu/ark:/67531/metadc500731/.

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Vitamin B-6 status was examined in a group of 46 elderly subjects who were selected from nursing home residents, hospital patients, and free living individuals in Denton County. Subjects were limited to men and women over 60 years of age. Erythrocyte aspartate aminotransferase stimulation with pyridoxal phosphate (in-vitro) was studied as the biochemical criterion of vitamin B-6 status. The pyridoxine status of these 46 subjects (the reference group) was measured in order to be able to identify people with a relatively poor B-6 status. A sub-group of the reference group was composed of 4 subjects who took B-6 supplements (supplemented group). There was no significant difference (0.05 level) in the basal activity, stimulated activity, percentage stimulation, or body weight, after treatment with 10 mg pyridoxine hydrochloride for 4 weeks, even though all 4 subjects had an improved B-6 status (based on percentage stimulation) after taking the supplement. The data indicated that of the 4 subjects tested, 2 showed a large change in the basal activity, stimulated activity, and percentage stimulation. The lack of significant difference (0.05 level) was probably due to a small sample size. One subject reported an increased appetite and body weight after treatment with pyridoxine.
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Nihan, Laura. "Conjunctival Impression Cytology Assessment of Vitamin A Status of Migrant Children." DigitalCommons@USU, 1995. https://digitalcommons.usu.edu/etd/5437.

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Subclinical vitamin A deficiency was assessed in 65 Hispanic children attending four migrant Head Start programs in Utah. Subjects aged 2 to 6 years (median 3 years 10 months) were examined for evidence of vitamin A deficiency by conjunctival impression cytology. Biochemical indices for serum vitamin A, retinol-binding protein, zinc, and iron were performed. Of eight children (12.5%) with subclinical vitamin A deficiency, one child had a marginal serum vitamin A of 11 μg/dl. Retinol-binding protein concentrations were significantly lower in two subjects with abnormal conjunctival impression cytology. Serum zinc, which when low can mimic signs of ocular vitamin A lesions, was normal for all 65 subjects. Fifteen children (23%) had iron-deficiency anemia. Logistic regression was the central method of analysis used in this study. The results of the statistical analyses indicated there was a correlation value (0.31) between abnormal conjunctival impression cytology and serum vitamin A, which supports the hypothesis that abnormal conjunctiva! impression cytology is concurrent with decreased serum vitamin A. Assessment of vitamin A status of Hispanic migrant children by impression cytology was effective in identifying children at risk for hypovitaminosis A. Beyond vitamin A's role in vision and maintenance of epithelium, it is also required for growth and hematopoiesis. The children of migrant workers may be suffering physiologically important consequences of vitamin A and iron deficiency that can be prevented by screening with biochemical and histological testing. Nutrition intervention for deficient children is warranted.
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Favret, Jenny C. "An incidence study of vitamin and mineral supplementation among infants in Southwest Virginia." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/101275.

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A longitudinal feeding study of 154 infants in Southwest Virginia was conducted during 1978-1980. The incidence of vitamin and mineral supplementation among these infants was the focus of the retrospective study discussed here. With the use of the Nutritional Analysis System of Louisiana State University, nutrient adequacy levels were determined. Vitamin D, vitamin E, folacin, vitamin B-6, and iron were the problem nutrients identified through this analysis. Inappropriate infant feeding practices such as the use of low iron formulas, the use of cow's milk, and the consumption of inadequate milk volume were blamed for these dietary deficiencies. Routine vitamin supplementation was common among infants of all feeding types. While much of the supplementation was unnecessary, large percentages of infants demonstrated a need for it. The exception was vitamin A. None of the infants who received supplemental vitamin A had inadequate dietary intakes of this nutrient. Supplementation was not shown to have an effect on weight or length gain measurements. Parents should be given specific infant feeding instructions prior to hospital discharge. Included should be a list of the circumstances which would indicate the need for supplementation.
M.S.
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Tshihwanambi, T. P. "Consumption patterns of vitamin a-rich foods of 10-13 year old children living in a rural area in Venda." Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-06132008-154920.

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Books on the topic "Vitamin A in human nutrition"

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T, Dickerson John W., ed. Vitamins in human health and disease. Wallingford: CAB International, 1996.

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Rona, Zoltan P. Vitamin D: The sunshine vitamin. Summertown, Tenn: Books Alive, 2009.

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Reinhard, Tonia. The vitamin sourcebook. Los Angeles: Lowell House, 1998.

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Lan, Xiu Wu Shi. Encyclopedia of vitamin and mineral nutrition. Taiwan: Hua Wen, 2003.

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Ball, G. F. M. Water-soluble Vitamin Assays in Human Nutrition. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2061-0.

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Ball, G. F. M. Water-soluble vitamin assays in human nutrition. London: Chapman and Hall, 1994.

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Scala, James. Making the vitamin connection: The food supplement story. New York: Harper & Row, 1985.

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Ulene, Art. The vitamin strategy. Berkeley, CA: Ulysses Press, 1994.

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Watson, Elizabeth. The all new vitamin & mineral bible. Lantana, FL: MicroMags, 1997.

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J, Stackhouse William, ed. Vitamin D: Biochemistry, nutrition and roles. Hauppauge, N.Y: Nova Science Publishers, 2010.

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Book chapters on the topic "Vitamin A in human nutrition"

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Bendich, Adrianne. "Vitamin E and Human Immune Functions." In Nutrition and Immunology, 217–28. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2900-2_10.

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Huey, Samantha L., and Saurabh Mehta. "Human Immunodeficiency Virus and Vitamin A." In Nutrition and HIV, 1–26. Boca Raton : Taylor & Francis, 2018. | “A CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T&F Informa plc.”: CRC Press, 2018. http://dx.doi.org/10.1201/9781351058193-1.

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Brown, La Verne L., and Paul M. Coates. "Addressing Key Knowledge Gaps in Nutrition Research and the Impact of Funding Priorities in Human Nutrition." In Vitamin E in Human Health, 445–56. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05315-4_31.

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Eastwood, Martin. "Vitamins." In Principles of Human Nutrition, 177–237. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4899-3025-5_7.

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Ball, G. F. M. "Physicochemical methods (excluding HPLC) for determining thiamin, riboflavin, niacin, vitamin B6, pantothenic acid and vitamin C." In Water-soluble Vitamin Assays in Human Nutrition, 142–201. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2061-0_5.

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Ball, G. F. M. "High-performance liquid chromatographic methods for the determination of thiamin, riboflavin, niacin, vitamin B6 folate and vitamin C." In Water-soluble Vitamin Assays in Human Nutrition, 202–316. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2061-0_6.

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Ball, G. F. M. "Introduction." In Water-soluble Vitamin Assays in Human Nutrition, 1–9. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2061-0_1.

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Ball, G. F. M. "Chemical and biological nature of the water-soluble vitamins." In Water-soluble Vitamin Assays in Human Nutrition, 10–98. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2061-0_2.

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Ball, G. F. M. "Analytical considerations." In Water-soluble Vitamin Assays in Human Nutrition, 99–120. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2061-0_3.

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Ball, G. F. M. "Extraction of the water-soluble vitamins." In Water-soluble Vitamin Assays in Human Nutrition, 121–41. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2061-0_4.

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Conference papers on the topic "Vitamin A in human nutrition"

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Litvyak, V., V. Kravchenko, A. Batyan, and A. Trifonova. "A NEW WAY TO OBTAIN A VALUABLE PRODUCT FOR HUMAN HEALTH BASED ON BEE HONEY." In SAKHAROV READINGS 2022: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY. International Sakharov Environmental Institute of Belarusian State University, 2022. http://dx.doi.org/10.46646/sakh-2022-1-312-316.

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A new method of obtaining a product valuable for human health based on bee honey is proposed, which expands the possibilities of organic nutrition and increases the body’s resistance to changing environmental conditions, since the final one has a balanced carbohydrate-protein-vitamin-mineral composition and good organoleptic properties.
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Bobeck, Elizabeth. "Bioactive lipids and related nutrients in companion animal and poultry diets for reducing inflammation and improving immunity." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/vqxl3869.

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Beyond meeting nutritional requirements for growth and maintenance, select dietary ingredients can have additional effects, intended or not, on animal physiology and immune function. Diets can be enriched to benefit the animal, and a dual benefit can be achieved in the case of enriching animal products for the downstream human consumer. Many immune-altering nutrients are fat-soluble, including Vitamin E and D. Importantly, dietary lipids themselves can impact immune function; therefore, a focused and intentional selection of specific dietary fats, specifically omega-3 polyunsaturated fatty acids (PUFA), is one method to alter inflammatory cascades in animals consuming the diet. Examples of other related ingredients to which the immune system is responsive include zinc and probiotics. While work in human, livestock, and companion animal models is working to identify therapeutic inclusion rates for these nutrients and ingredients, it should be noted that physiological alterations are seen in both over and under-inclusion and are nutrient-specific. For example, inclusion above currently recommended levels may optimize immune function and reduce inflammation in the case of vitamin D or omega-3 PUFA, while for zinc, additional pharmacological supplementation above requirements may inhibit immune function. Importantly, when a diet is formulated to reduce overall systemic inflammation, it must be considered that important “background” functions of the immune system, including monitoring for and clearing pathogenic microbial populations, may be down-regulated due to a general reduction in immune reactivity. Continued work to understand how diet and nutrition impact immunity, and how to balance inflammation through nutrition, is an area of active research and will inform downstream users how to best use data to impact consumers of that feed in desirable ways.
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Wekesa, Zindzi Damianna, and Gilbert Keen Arigi. "Black Soldier Fly as A Sustainable Source of Protein for Human Consumption." In 3rd International Nutrition and Dietetics Scientific Conference. KENYA NUTRITIONISTS AND DIETICIANS INSTITUTE, 2023. http://dx.doi.org/10.57039/jnd-conf-abt-2023-f.s.d.h.l-18.

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Background: Insects, particularly the black soldier fly (Hermetia illucens), have gained attention as a promising alternative protein source to address food security challenges. This study explores the potential of black soldier fly larvae as a sustainable and nutritious protein source for human consumption. Objective: The objective of this study is to investigate the nutritional composition and safety aspects of black soldier fly larvae, evaluate its potential as a viable protein source, and discuss its implications for food security and policy. Methods: Black soldier fly larvae were reared under controlled conditions and analyzed for their nutritional composition, including protein content, amino acid profile, fatty acid profile, and micronutrient content. Safety aspects, such as heavy metal and pesticide residue levels, were also assessed. The study further examined the feasibility and scalability of black soldier fly production for human consumption. Results: The results reveal that black soldier fly larvae possess a high protein content, rich in essential amino acids, and a favorable fatty acid profile. Furthermore, the larvae contain significant amounts of essential micronutrients, including vitamins and minerals, contributing to a well-rounded nutritional profile. Safety analysis demonstrates low levels of heavy metals and pesticide residues, indicating its suitability for human consumption. The study also identifies the potential of large-scale black soldier fly production as an economically viable solution for food security. Conclusion: This study highlights the potential of black soldier fly larvae as a sustainable and nutritious protein source for human consumption. With its high protein content, favorable nutrient profile, and safety parameters, black soldier fly larvae offer a promising solution to address food security challenges. Incorporating black soldier fly larvae into diets and food systems has the potential to enhance nutritional adequacy and reduce reliance on traditional protein sources. Furthermore, the findings emphasize the need for policy frameworks and regulatory support to promote the adoption of insect-based diets and ensure their safe integration into global food systems. Keywords: Black soldier fly, Hermetia illucens, insect-based diet, food security, protein source, sustainability, nutritional composition, safety.
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C, Timanoi, Mwanja M, and Arasio A. "Utilization of one health ‘Kimormor’ Multi-Sectoral Outreaches for enhanced Nutrition Interventions in Migratory Pastoral Communities of Turkana County, Kenya." In 3rd International Nutrition and Dietetics Scientific Conference. KENYA NUTRITIONISTS AND DIETICIANS INSTITUTE, 2023. http://dx.doi.org/10.57039/jnd-conf-abt-2023-f.s.s.d-03.

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Background: According to the Integrated Phase Classification for acute malnutrition, Turkana County was ranked at critical phase (15-30% GAM rates of 27%, or ‘critical phase’ and Integrated Phase Classification 3 as food security insecure or ‘crisis phase (SMART Survey Jan 2023). Turkana County SMART Nutrition surveys 2018-2022 indicated increased stunting rates from 17.4% in 2018 to 21.9% in 2022, while in Jan 2023 the rates reduced to 21.6% due to the increased nutrition surveillance and response by various partners. Amidst the climate change crisis posed by drought and flush floods, a multi-sectoral approach in addressing maternal, child health and nutrition gaps is critical for better health outcomes for more than 50% of the population which is pastoral. This paper highlights the utilization of Kimormor Multisector Outreaches to respond to the unique needs of migratory pastoral communities in Loima Sub County, Turkana County. USAID Imarisha Jamii Intervention • To enhance health care seeking for migratory populations, Amref Health Africa in Kenya implemented the Kimormor One Health Approach. • This co-created model encompasses a multisectoral approaches on maternal and child health (MNCH) outcomes. • Through Kimormor, human and animal health is delivered to pastoral communities. • Multi-Sectoral Interventions are integrated into the Mobile Outreaches which follow the communities in their mapped migratory routes and waterpoints. Results: Through the Kimormor one health integrated outreach for one site out of 5 sites, 184 children and 40 Pregnant and lactating women (PLW) were screened for malnutrition out of these 10 and 96 children were severely malnourished and moderately malnourished respectively.25 PLWIDs were malnourished and enrolled into supplementary feeding Program (SFP). 129 children got dewormed, and 136 (under 5yrs) received Vitamin A supplementation. 16 children were fully Immunized.174 adults were able to be registered for National ID's and NHIF membership. A total of 4196 Shoats were dewormed and vaccinated against PPR disease. Conclusion • Implementation of Kimormor One health Outreach contributed to uptake of nutrition services like Vitamin A supplementation,deworming,continous growth monitoring and screening for malnutrition. • Other Multi-sector servivices which would otherwise have not been achieved in a static approach include animal health, NHIF enrollment, and maternal and child health aervices • Partnership and resource pooling among different sectors were effectively achieved which made implementation of the initiative possible. Recommendation • There is need to scale up an innovative kimormor one-health approach for migratory populations in other sub counties.
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Popescu, Georgeta-Sofia, Anisoara Ienciu, Luminita Pirvulescu, Florina Radu, and Despina Maria Bordean. "IMPROVING THE QUALITY OF UNHEATED TOMATO JUICE BY USING PLANTS RICH IN BIOACTIVE COMPONENTS." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023v/6.2/s25.32.

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Tomatoes (Solanum Lycopersicum) are fruits rich in bioactive substances, especially compounds with antioxidant characteristics. Tomato fruits are a source of vitamin C, having beneficial properties for health. Current indications lead us to the conclusion that tomato fruits are potential candidates for the study of bioactivity, as well as for functionally developed fruits. The activity of these bioactive compounds is to combat the activity of free radicals. Tomatoes are the most popular vegetable crop in the world. These vegetables are important due to their high contribution to human health and nutrition. The attractive colour and flavour of tomato have made it a dietary staple in many parts of the world One of the most popular options for consuming tomatoes is tomato juice. Raw tomato juice is known as a good energy drink, tasty, and filled with health benefits. The motivation, in this case, was to obtain food products with superior taste and nutritional properties that fall within the scope of food engineering. The main objective of our study was to obtain and reveal some physicochemical and nutritional properties of some varieties of raw tomato juice with the addition of green chillies and horseradish. These additions increased the antioxidant content of the juice and also improved the sensory characteristics of the two types of juice.
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Velciov, Ariana Bianca, Antoanela Cozma, Ramona �. Cristina Heghedus � Mindru, Alexandru �. Erne Rinovetz, and Adrian Rivis. "NUTRITIONAL AND SENSORIAL CHARACTERISATION OF RAW DRY SALAMI WITH ADDITION OF GOJI AND NUTS." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023v/6.2/s25.36.

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Goji fruits (Lycium barbarum) are known for their very high content of antioxidants, supplemented by a high intake of vitamins, (including vitamins A, C and vitamins from the B complex), minerals (calcium, magnesium, selenium), proteins, fibers and amino acids. Thus, goji fruits have a very high nutritional potential, which is why their inclusion in the daily menu or their use for therapeutic purposes have proven extremely beneficial for the human body. Hazelnuts (Corylus avelana) and pistachios (Pistachia vera) are a great source of phytosterols, fibers and protein, also containing vitamins and minerals such as magnesium and vitamin E. The purpose of this study was to obtain a raw-dry salami with addition of goji fruits, hazelnut and pistachio, and to characterize our new formula in comparison with two types of salami from the local market, from the nutritional and sensory point of view. The total contents of fats, proteins, carbohydrates, mineral content, sodium chloride and moisture were determined. The results show that, compared to the salami sold on the market, our new formula - raw � dry salami with goji, hazelnut and pistachio has higher nutritional values. Regarding the sensory analysis, the tasters' preference was demonstrated for the salami with hazelnuts, pistachios and goji, this obtaining the highest scores in terms of texture, color, smell, taste and general acceptability. Consequently, we can observe that addition of goji berries, hazelnuts and pistachios when obtaining dry raw salami can optimize its nutritional and sensory quality.
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Okeyo, Dr David. "Edible Insect Based Diet: A Sustainable Low-Cost Nutritious Diet." In 3rd International Nutrition and Dietetics Scientific Conference. KENYA NUTRITIONISTS AND DIETICIANS INSTITUTE, 2023. http://dx.doi.org/10.57039/jnd-conf-knt-2023-001.

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THERE are emerging trends of sustainable food in the global food security and food systems value chain. Malnutrition has become a real issue alongside the lifecycle and this is more severe on hidden hunger. Insects of varied species have been known as a host of micronutrients such as vitamins, calcium, zinc and iron for human. These categories of organisms are easy to access or multiply as alternative source of protein and micronutrient supply. The use of insects such as termites’ crickets and grasshoppers are common in some countries like Kenya, Uganda, Thailand, India and South Africa. This keynote explores insects as alternative diets with a focus on sustainable food security in the context of access within the global food systems value chain. It is therefore apparent that entomophagy could be the solution to an increasing urgent food-security problem confronting the world. This is evidenced by the fact that already many countries are using insects as alternative food protein and feed sources. However, the current use remains low to replace traditional food sources worldwide. In the near future with good efforts edible insects have strong potential to become a primary source of nutrients.
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Krul, Elaine. "Nutritional opportunities to advance companion animal health - focus on lipids and related nutrients." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/cttu1432.

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Globally $232 billion was spent in the pet industry in 2021 and the compound annual growth rate (CAGR) is estimated to be 4.6%. In the USA alone, $109.6 billion was spent in 2021, and more money is spent annually on pet food and treats than veterinary care or products. Pet parents are increasingly more concerned about the nutritional quality of the foods they feed their animals and their impact on health. Pet food manufacturers are responding to the increased demand for premium food products but importantly, the work of veterinary nutrition researchers is key to ensuring the safety and nutritional sufficiency of commercial and specialized animal diets. Lipids and related nutrients, such as omega-3 polyunsaturated fatty acids, medium-chain triglyceride oil (MCT oil), vitamins D and E and choline play an important role in companion animal health and will be discussed in this session. In addition, a study evaluating the impact of canine diets with different fat contents on risk of pancreatitis will be presented. These reports not only provide more insight into companion animal health but also sheds light on our understanding of how lipids and related nutrients impact human health.
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Musau, Violet. "Technological Approaches in Food Systems." In 3rd International Nutrition and Dietetics Scientific Conference. KENYA NUTRITIONISTS AND DIETICIANS INSTITUTE, 2023. http://dx.doi.org/10.57039/jnd-conf-abt-2023-t.a.f.s-40.

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Introduction: Sustainable agriculture is directly linked to food sustainability. Sustainable agriculture is an integrated system of animal and plant production practices to provide enough human food, use resources efficiently, and effective farm operations. Food systems are a combination of all factors that are important for food security. The demand for sustainable, healthy produced food is greater than ever before. Technological approaches can help for the alignment of various issues such as availability, organization, and distribution of the current food. Technological innovations and advancements are essential in promoting sustainable food systems in Kenya. Scope: Technologies like precision farming which involve the combination of artificial technologies, the Internet of things and drones helps to collect, monitor and analyze big data. This helps farmers optimize land productivity and improve land productivity. The Food sector has been experimenting with novel ways to improve food production on existing land. For example, countries that are densely populated and lack fertile agricultural lands, like Singapore, Qatar, and UAE are considering other techniques like indoor farming. Methods like vertical farming require limited or no pesticide. The technology involves entirely insulated indoor operations. Crops are produced at multiple levels using electrical lighting, like light emitting diodes (LEDs). Technologies such as alternative proteins include plant-based or lab-grown meat. These methods offer sustainable ways of meat production. Personalized nutrition and diets are also an emerging trend. This is because the scientific community has revealed that different people’s bodies react differently to the same type of food. Some organizations use continuous monitoring devices to track blood levels of vitamins, glucose, and more. Objective: This study aims to address the question of how technological innovations can impact and transform food systems. Findings: Alternative proteins can help manage the rising meat demand in a sustainable manner. Mobile applications monitor and can creating personalized diet plans based on different types of health, and genetics. These applications can also connect the farmer to the market and the expected weather forecasts. Technological approaches in food systems offer solutions for many challenges faced in the value chain and agriculture. They also have great potential to improve our food systems. Conclusion: It is imperative that the government and various organizations work together to incorporate technology in finding solutions to creating a sustainable food system.
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Naguevschi, Ana-Maria. "Conformity analysis of fermented cream." In Simpozion stiintific al tinerilor cercetatori, editia 20. Academy of Economic Studies of Moldova, 2023. http://dx.doi.org/10.53486/9789975359023.29.

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Dairy products are of particular importance for human nutrition. They provide about 100 nutrients (26 fatty acids, 45 minerals and 25 vitamins). Especially, fermented cream is among the most important dairy product that has a major demand on the consumer market, being purchased daily by consumers. Cream is high in fat. Cream fats are easily assimilated by the human body. The purpose of this paper is to determine the conformity of fermented cream and the study of standardized indices. The following research methods were included: method of analysis, methods of scientific knowledge and expertise. The paper contains the results of organoleptic, physico-chemical and sensory research on the quality of local and imported cream products. The results of the research show that no product fully met the prescribed requirements. We also studied consumer preferences by sensory analysis of fermented cream (20 points). The highest score was 18.4 points, accumulated by the "President" cream. In addition, we checked the correctness of the mandatory information on the product labels. In this sense, out of all the 6 products analyzed, only one product meets the requirements of Law 279 on consumer information on food. The other products are missing one or two pieces of information related to the batch number, product safety information and the label with the translation into the state language.
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Reports on the topic "Vitamin A in human nutrition"

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Regulated Products Risk Assessment Team. Safety assessment: Calcidiol (25-hydroxycholecalciferol monohydrate) as a novel food for use in food supplements. Food Standards Agency, April 2024. http://dx.doi.org/10.46756/sci.fsa.xqz647.

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An application was submitted to the Food Standards Agency (FSA) and Food Standards Scotland (FSS) in January 2021 from DSM Nutritional Products Ltd (“the applicant”) for the authorisation of Calcidiol, 25-hydroxycholecalciferol monohydrate as a novel food. The novel food is a new source of vitamin D3 for use as a food supplement targeted at a generally healthy population including pregnant and lactating women, except children under 3 years. It is a vitamer of vitamin D3 (cholecalciferol) and is directly absorbed in the human gut. To support the FSA and FSS in their evaluation of the application, the Advisory Committee on Novel Foods and Processes (ACNFP) were asked to review the safety dossier and supplementary information provided by the applicant. Please note the Committee did not consider any potential health benefits or claims arising from consuming the food, as the focus of the novel food assessment is to ensure the food is safe, and not putting consumers at a nutritional disadvantage. The FSA and FSS concluded that the applicant had provided sufficient information to assure the novel food, Calcidiol, was safe under the proposed conditions of use. The anticipated intake levels and the proposed use in food supplements was not considered to be nutritionally disadvantageous. The views of the ACNFP have been taken into account in the regulatory assessment which represents the opinion of the FSA and FSS.
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Rosero, A., J. García, and J. Morelo. Varietal selection of high beta-carotene cassava genotypes adapted to dry and humid Caribbean Region of Colombia. Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2018. http://dx.doi.org/10.21930/agrosavia.poster.2018.6.

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Cassava (Manihot esculenta Crantz) is a four staple crop for human consume worldwide after rice, wheat and corn. Mainly, it is used as energetic source due high carbohydrate content; however, improvement of its nutritional quality can contribute to food security, especially in vulnerable region as Caribe, where several factors have threaten with nutritional balance in children. In Colombia, close to of children are born with a birth weight of less than 2,500 grams, which is one of the main risk factors for the mortality of newborns. In children less than 5 years old, 43,3% has zinc deficiency, 24,3% has A vitamin deficiency and 10,6 has Iron deficiency
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Gallagher, John. Determination of Optimum Vitamin D Nutrition in Young Women. Fort Belvoir, VA: Defense Technical Information Center, October 2009. http://dx.doi.org/10.21236/ada517262.

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Gallagher, John C. Determination of Optimum Vitamin D Nutrition in Young Women. Fort Belvoir, VA: Defense Technical Information Center, October 2012. http://dx.doi.org/10.21236/ada581505.

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Leith, Dave. Effects of Vitamin Nutrition on the Immune Response of Hatchery-Reared Salmonids, 1984 Annual Report. Office of Scientific and Technical Information (OSTI), September 1985. http://dx.doi.org/10.2172/765575.

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Leith, Dave. Effects of Vitamin Nutrition on the Immune Response of Hatchery-Reared Salmonids, 1986 Annual Report. Office of Scientific and Technical Information (OSTI), June 1986. http://dx.doi.org/10.2172/765576.

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Leith, Dave. Effects of Vitamin Nutrition on the Immune Response of Hatchery-Reared Salmonids, 1987 Annual Report. Office of Scientific and Technical Information (OSTI), August 1987. http://dx.doi.org/10.2172/765577.

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Leith, Dave. Effects of Vitamin Nutrition on the Immune Response of Hatchery-Reared Salmonids, 1989 Final Report. Office of Scientific and Technical Information (OSTI), July 1989. http://dx.doi.org/10.2172/765578.

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Kanner, Joseph, Mark Richards, Ron Kohen, and Reed Jess. Improvement of quality and nutritional value of muscle foods. United States Department of Agriculture, December 2008. http://dx.doi.org/10.32747/2008.7591735.bard.

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Food is an essential to our existence but under certain conditions it could become the origin to the accumulative health damages. Technological processes as heating, chopping, mincing, grounding, promote the lipid oxidation process in muscle tissues and meat foodstuffs. Lipid oxidation occurred rapidly in turkey muscle, intermediate in duck, and slowest in chicken during frozen storage. Depletion of tocopherol during frozen storage was more rapid in turkey and duck compared to chicken. These processes developed from lipid peroxides produce many cytotoxic compounds including malondialdehyde (MDA). The muscle tissue is further oxidized in stomach conditions producing additional cytotoxic compounds. Oxidized lipids that are formed during digestion of a meal possess the potential to promote reactions that incur vascular diseases. A grape seed extract (1% of the meat weight) and butylated hydroxytoluene (0.2% of the lipid weight) were each effective at preventing formation of lipid oxidation products for 3 hours during co-incubation with cooked turkey meat in simulated gastric fluid (SGF). Polyphenols in the human diet, as an integral part of the meal prevent the generation and absorption of cytotoxic compounds and the destruction of essential nutrients, eg. antioxidants vitamins during the meal. Polyphenols act as antioxidants in the gastrointestinal tract; they scavenge free radicals and may interact with reactive carbonyls, enzymes and proteins. These all reactions results in decreasing the absorption of reactive carbonyls and possible other cytotoxic compounds into the plasma. Consumptions of diet high in fat and red meat are contributory risk factors partly due to an increase production of cytotoxic oxidized lipid products eg. MDA. However, the simultaneously consumption of polyphenols rich foods reduce these factors. Locating the biological site of action of polyphenols in the in the gastrointestinal tract may explain the paradox between the protective effect of a highly polyphenols rich diet and the low bioavailability of these molecules in human plasma. It may also explain the "French paradox" and the beneficial effect of Mediterranean and Japanese diets, in which food products with high antioxidants content such as polyphenols are consumed during the meal.
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Frankenberg, Elizabeth, and Duncan Thomas. Human Capital and Shocks: Evidence on Education, Health and Nutrition. Cambridge, MA: National Bureau of Economic Research, April 2017. http://dx.doi.org/10.3386/w23347.

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