Search results for vitamin a

“Providing patients with calcifediol may improve vitamin D status faster than native vitamin D — that takes time for the body to process. This may be particularly important in the acute care setting where time is of the essence.”

“Vitamin D participates in endocrine signaling and gene regulation, but supplementation does not reliably raise testosterone. In three small trials of men with normal baseline testosterone, vitamin D supplementation did not increase circulating testosterone.”

“In this FoundMyFitness interview clip, Dr. Peter Attia and Dr. Rhonda Patrick discuss how sunlight and supplements contribute to vitamin D status. They distinguish circulating 25-hydroxyvitamin D from the active hormone 1,25-dihydroxyvitamin D and explain why sun exposure also carries activity, nitric-oxide, and lifestyle signals that complicate observational comparisons.”

“The parent trial did not significantly improve its six primary outcomes, which included blood pressure, lower-extremity function, cognition, fractures, and infections. The practical use of omega-3, vitamin D, and strength training should account for baseline nutrient status, medicines, cardiovascular health, balance, and exercise capacity.”

“Dose and retesting must account for baseline status and clinical context. A large randomized trial found that daily vitamin D supplementation did not reduce invasive cancer, major cardiovascular events, or all-cause mortality in generally healthy older adults.”

“In a study of over 190,000 people tested for SARS-CoV-2, lower 25-hydroxyvitamin D levels were strongly associated with higher SARS-CoV-2 test positivity rates, despite race/ethnicity, age, sex, and latitude. In this clip, Dr. Roger Seheult describes the interesting similarity between COVID-19 risk factors and vitamin D deficiency risk factors.”

“Mounting evidence suggests that vitamin D has a much broader role than initially thought — including regulating many genes and participating in the immune system. In the setting of COVID-19, vitamin D deficiency can lead to imbalances in the renin-angiotensin-system, a critical regulator of blood pressure, inflammation, and body fluid homeostasis.”

“A second randomized trial found that a single vitamin D3 dose taken with food increased vitamin D status, with a larger rise when the meal contained at least 15 grams of fat. These findings support taking vitamin D with a meal that contains some fat.”

“Nutritional status plays a critical role in aging. Emerging evidence now suggests that supplemental omega-3 fatty acids or vitamin D slow epigenetic aging. In this clip, Dr. Steve Horvath describes evidence suggesting that supplemental vitamin D or omega-3 fatty acids slow epigenetic aging.”

“In a 16-week trial of overweight or obese African American participants with low vitamin D, supplementation produced dose- and clock-specific changes in DNA-methylation age estimates.”