All articles tagged with #vitamin a
Johns Hopkins scientists show that blue cones in the developing foveola are converted into red and green cones by retinoic acid (a vitamin A–derived signal) and thyroid hormones, rather than migrating away. This mechanism explains how the eye achieves sharp central vision and could improve lab-grown retinal tissue and enable future cell therapies for macular degeneration and other vision losses.
On Culture Apothecary, host Alex Clark and guest Bob Sears argue that measles is not typically fatal in well-nourished children, discuss Texas death reports as possibly due to complications after measles rather than the virus itself, and advocate nutrition and vitamin A to lessen measles severity. Sears questions the safety of the MMR vaccine, warns that declining vaccination could lead to more measles cases, and notes that historically improved diets helped reduce fatalities while suggesting a future safer vaccine may emerge.
Boston Children’s Hospital researchers linked a surge in vitamin A and cod liver oil discussions as measles treatments to an 38.7% rise in pediatric vitamin A exposures (86 cases) reported to poison centers and a spike in Google searches. Experts warn vitamin A is only beneficial for deficiency and can be toxic in non-deficient individuals; there is no proven cure, and vaccines remain the best defense. The 2025 measles outbreak reached 2,288 cases in the U.S., mostly among unvaccinated people, with kindergarten vaccination rates below the 95% herd-immunity threshold.
A JAMA Network Open study links two surges in public interest in vitamin A and cod liver oil as measles remedies to media and political statements (notably RFK Jr. and Joe Rogan). Poison centers reported a 38.7% rise in vitamin A exposures, suggesting that unclear or conflicting guidance can drive risky health-seeking behavior. Vitamin A can be toxic in high doses, and these remedies should only be used under medical supervision; the findings underscore the need for careful public health messaging during outbreaks.
Researchers analyzed online search trends linked to media coverage of Vitamin A as a measles treatment and found spikes in related searches after appearances by Joe Rogan and other figures; medical experts caution Vitamin A can aid recovery but does not prevent measles and can be toxic in high doses, with a rise in Vitamin A exposures reported by poison centers. The study highlights media influence on health-seeking behavior during outbreaks and calls for clearer, science-based guidance from trusted sources.
Scientists have discovered that a vitamin A metabolite, retinoic acid, can suppress the immune system's ability to fight cancer by promoting immune tolerance. They developed inhibitors that block this pathway, restoring immune responses and improving cancer vaccine efficacy, paving the way for new immunotherapy treatments.
Non-Alcoholic Fatty Liver Disease (NAFLD) is linked to nutritional imbalances, particularly deficiencies in copper and vitamin A, and excess intake of fruit sugar (fructose). Dr. DeBease suggests that supporting liver health involves eliminating fruit, reducing carbs, and increasing nutrient-dense foods like organ meats to aid iron processing and repair liver damage. The approach emphasizes internal nutritional support over simply reducing fat intake.
Eating a serving of carrots daily for a week did not turn the skin orange or improve vision but did promote better digestion and healthier eating habits, highlighting that consistent consumption of nutrient-rich foods supports long-term health rather than quick fixes.
Eating a serving of carrots daily for a week did not turn the skin orange or improve vision, but it did promote better digestion, curb cravings, and provided essential nutrients like vitamin A and antioxidants, highlighting the benefits of consistent healthy eating habits.
Vitamin A is essential for overall health, supporting immune function and cell growth, and is best obtained through consuming whole foods rich in the vitamin.
A Vietnamese study suggests that both too much and too little vitamin A intake may increase cancer risk, highlighting the importance of maintaining a balanced intake within recommended levels for optimal health and cancer prevention.
A new study indicates that both excessive and insufficient vitamin A intake may increase the risk of certain cancers, emphasizing the importance of maintaining a balanced diet that meets but does not exceed recommended levels, and highlighting the role of overall healthy lifestyle choices in cancer prevention.
A UK GP warns against taking multivitamins daily, citing studies that link them to increased mortality risk and potential health issues like liver failure and bone problems, emphasizing that a balanced diet is the best way to obtain necessary nutrients.
Consuming vitamin A-rich foods like liver, dairy, carrots, spinach, and sweet potatoes can support skin health, collagen production, and anti-aging efforts, but excessive intake can be toxic, so moderation and consultation with a healthcare provider are advised.
The NHS advises against consuming liver or liver pâté more than once a week due to their high vitamin A content, which can weaken bones over time if consumed excessively. Pregnant women or those trying to conceive should avoid these foods and vitamin A supplements altogether, as high levels can harm an unborn baby. A balanced diet typically provides sufficient vitamin A, with recommended daily intakes of 700 µg for men and 600 µg for women. The risk of bone health issues is higher for those who consistently exceed 1.5 mg of vitamin A daily over many years.