A study found that vitamin A's carrier protein, retinol-binding protein (RBP), was significantly lower in obese subjects than nonobese subjects. This suggests a potential link between RBP and insulin resistance in obesity. Further research is needed to determine the role of apo-RBP, an unbound form of RBP, in mediating insulin signaling.
SourceSociety for Experimental Biology and Medicine·JournalExperimental Biology and Medicine·DateSep 26, 2008
A study published in Pediatrics found that a single dose of vitamin A given to newborns shortly after birth can reduce their risk of death by 15%. This low-cost intervention has the potential to save millions of lives, particularly in developing countries where childhood mortality is highest.
SourceJohns Hopkins Bloomberg School of Public Health·JournalPEDIATRICS·DateJul 7, 2008
Researchers found an association between high folate intake and lower levels of chromosomal abnormalities in men's sperm. The study suggests that increasing folate intake through diet or supplements may reduce the risk of chromosomal abnormalities in children.
SourceEuropean Society of Human Reproduction and Embryology·JournalHuman Reproduction·DateMar 19, 2008
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Researchers at Rutgers University have uncovered how the developing embryo reacts to fluctuations in maternal vitamin A levels. The study reveals that LRAT protects tissues from toxic levels of vitamin A and identifies three key molecular players involved.
SourceRutgers University·JournalJournal of Biological Chemistry·DateFeb 28, 2008
A team of scientists has developed an economical approach to breeding maize with higher provitamin A levels, which can combat vitamin A deficiency. By identifying a naturally mutated enzyme, they can now inexpensively screen different varieties and breed those that contain it.
SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalScience·DateJan 17, 2008
Scientists have developed a new tool to analyze corn's genetic makeup, enabling the identification and increased cultivation of high-vitamin A precursors. This method is designed to tap natural genetic diversity, significantly simplifying the task of finding high-vitamin corn strains.
SourceU.S. National Science Foundation·JournalScience·DateJan 17, 2008
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Breastfeeding counseling and vitamin A supplementation have the potential to cut child deaths by 25%. Implementing these nutrition strategies alongside other interventions could reduce mortality between birth and 36 months by around 25%.
Researchers have made significant breakthroughs in developing new male contraceptives, including a hormone-based regimen that worked in 90% of men, a vasectomy alternative with high success rates, and a vitamin A-blocking drug that showed no health effects. These advancements offer hope for men seeking reliable birth control options.
SourceMale Contraception Information Project·DateSep 28, 2007
Researchers developed two new southernpeas, WhipperSnapper and GreenPack-DG, with improved characteristics. These peas offer nutrient-rich benefits, pleasing textures, and attractive colors, making them suitable for various applications, including fresh consumption and processing into frozen pea products.
SourceAmerican Society for Horticultural Science·JournalHortScience·DateSep 27, 2007
A link has been confirmed between depression and low folate levels, with a review of 11 studies involving 15,315 participants supporting the measure. Folate supplements may also benefit people with depression, according to Dr Simon Gilbody.
SourceUniversity of York·JournalJournal of Epidemiology and Community Health·DateJun 26, 2007
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Research suggests that higher doses of vitamin A do not improve health outcomes for mothers and children in areas with moderate deficiency. Lower doses, as recommended by the WHO, may be sufficient to prevent mortality. The findings urge caution against increasing standard dosing schedules without further investigation.
Cornell researchers identified a genetic mutation in orange cauliflower that allows it to hold more beta-carotene, a precursor to vitamin A. This finding may lead to more nutritious staple crops by increasing their ability to store beta-carotene.
SourceCornell University·JournalThe Plant Cell·DateJun 1, 2007
A study published by the American Academy of Neurology found that weight loss surgery can lead to vitamin B1 deficiency, resulting in memory loss, confusion, and other neurological problems. The syndrome, known as Wernicke encephalopathy, affects the brain and nervous system when the body lacks sufficient thiamine.
SourceAmerican Academy of Neurology·JournalNeurology·DateMar 12, 2007
A meta-analysis of 68 randomized trials found that antioxidant supplements beta carotene, vitamin A, and vitamin E were associated with increased mortality risk. Vitamin C showed no significant association, while selenium use tended to reduce mortality risk.
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Researchers at Albert Einstein College of Medicine have found the mechanism by which folates in the diet are absorbed by the intestinal tract, solving a longstanding mystery. A genetic test can now detect hereditary folate malabsorption, a rare but potentially fatal disorder, allowing for early treatment and supplementation.
SourceAlbert Einstein College of Medicine·JournalCell·DateNov 30, 2006
Consumption of fortified milk significantly reduces diarrhea and acute lower respiratory illness among preschool children in developing countries. The study found that fortified milk reduced the number of days with severe illness by 15 percent and incidence of pneumonia by 26 percent.
SourceJohns Hopkins Bloomberg School of Public Health·DateNov 29, 2006
Researchers found three patients over 65 with extensive intestinal surgery developing vitamin A deficiency despite taking supplements. Vitamin A injections improved vision within days, highlighting the growing concern of vitamin A deficiency in affluent countries.
SourceBMJ Specialty Journals·JournalBritish Journal of Ophthalmology·DateJun 13, 2006
A case study highlights the importance of monitoring vitamin B1 deficiency in post-gastric bypass surgery patients due to potential development of Wernicke encephalopathy. The patient experienced symptoms such as nausea, fatigue, and hearing loss, which improved with increased intravenous dose of vitamin B1.
SourceAmerican Academy of Neurology·JournalNeurology·DateDec 26, 2005
Research reveals that many poor children in low-income countries are missing out on effective child survival strategies, including vitamin A supplements, safe water, and immunizations. Countries with higher coverage rates have less inequity than those with lower coverage rates.
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Researchers found that a natural product of vitamin A can regulate immunity and enhance vaccine response when combined with PIC. The combination resulted in a four to seven times better immune response compared to individual treatments.
SourcePenn State·JournalProceedings of the National Academy of Sciences·DateSep 12, 2005
Researchers found that reduced CRBP-I function compromises RAR activity, leading to loss of cell differentiation and tumor progression. The study suggests that somatic CRBP-I loss may contribute to breast cancer development and highlights the need for further research into vitamin A's role in cancer prevention.
SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateJan 4, 2005
Dr. Alfred Sommer receives the prestigious Pollin Prize for his groundbreaking research on vitamin A supplementation, saving millions of children's lives worldwide. Dr. Parul Christian is awarded a $100,000 fellowship stipend to continue her work on maternal nutrition and infant mortality in developing countries.
SourceJohns Hopkins Bloomberg School of Public Health·DateDec 17, 2004
A review of herbal and nutritional supplements found eight products associated with clinically significant ocular side effects, including ginkgo biloba, Echinacea purpurea, chamomile, licorice, canthaxanthine, Datura, niacin, and vitamin A. The side effects range from dry eye to retinal hemorrhages and transient visual loss.
SourceOregon Health & Science University·JournalAmerican Journal of Ophthalmology·DateOct 14, 2004
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A K-State researcher found a link between smoking, vitamin A deficiency and emphysema in rats. The study shows that benzopyrene, a common carcinogen in cigarettes, induces vitamin A deficiency, which can lead to increased emphysema scores.
SourceKansas State University·JournalJournal of Nutrition·DateJul 26, 2004
A study by Kaiser Permanente found that targeted interventions to increase multivitamin use among women of childbearing age had no significant long-term impact. Despite efforts to educate healthcare providers and pharmacists, the success of these interventions was hampered by inadequate implementation and lack of behavioral change.
SourceCenter for Advancing Health·JournalAmerican Journal of Preventive Medicine·DateJun 30, 2003
Vitamin A supplements have saved millions of lives by preventing childhood blindness and reducing mortality rates. Dr. Alfred Sommer's research also shows that supplementing women with vitamin A can reduce maternal mortality by an average of 45 percent.
A study found that increasing Vitamin B-6 intake rapidly improved its status and decreased DNA strand breaks in both smokers and non-smokers. The researchers also suggested that Vitamin B-6 has a high prevalence of inadequate dietary intake in the general population, particularly among smokers.
SourceFederation of American Societies for Experimental Biology·DateApr 14, 2003
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A study by Cornell University professor Michael C. Latham shows that a fortified orange drink improves iron and vitamin A status, reducing anemia risk by 51% in pregnant Tanzanian women. The supplement is also found to improve breast milk vitamin A levels and has potential to boost nutrition worldwide.
The NWO study found that children receiving iron, zinc, and vitamin A supplements during pregnancy have better resistance to disease. Zinc deficiency is often linked to the same causes as iron deficiency, resulting from one-sided nutrition lacking animal products.
SourceNetherlands Organization for Scientific Research·DateJul 25, 2001
Dr. Ingo Potrykus is being recognized for his research on genetic engineering technology and its applications to crop plants like rice, wheat, sorghum, and cassava. His work has the potential to address Vitamin A deficiencies in developing nations and improve food security.
Research reveals CPY26 degrades retinoic acid to establish uneven distribution, crucial for normal embryonic development. Elevated RA levels in Cpy26 mutant mice lead to severe developmental defects, highlighting the enzyme's protective role.
SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateJan 14, 2001
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A study by the Center for Advancing Health found that approximately 40% of the US population takes at least one vitamin or mineral supplement. The most commonly reported ingredients are vitamin C, B12, and E, but participants also used over 300 nonvitamin products posing serious health risks.
SourceCenter for Advancing Health·JournalArchives of Family Medicine·DateMar 13, 2000
A field trial in rural Nepal found that women taking vitamin A or beta-carotene supplements had a 40% lower risk of death from pregnancy compared to those not receiving the supplements. Vitamin A deficiency plays a critical role in maternal mortality, with rates often 50-100 times higher than in industrialized countries.
SourceJohns Hopkins Bloomberg School of Public Health·DateFeb 26, 1999
Researchers at Columbia University synthesized a derivative of vitamin A that accumulates with age in human eyes and may contribute to macular degeneration. The new synthesis allows for large-scale production of the compound, enabling further experiments to pinpoint its relationship with age-related changes in the retina.
SourceColumbia University·JournalProceedings of the National Academy of Sciences·DateDec 7, 1998
The study found stored carotenoids are not converted to vitamin A when the vitamin is removed from the diet, casting doubt on the utility of carotenoid precursors. Vitamin A deficiency remains a significant public health concern worldwide, affecting millions of people, especially children and vulnerable populations.
SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalJournal of Nutrition·DateAug 4, 1998
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Researchers at Purdue University found that a single injection of vitamin A has no impact on the health and fertility of hogs. The study, which tested over 977 sows, showed no difference in total litter size or weight, regardless of when the shot was administered.