Search results for vitamin e

“Vitamin C plays a critical role in immune function. Vitamin C is highly concentrated in immune cells, where it serves as a potent antioxidant. Vitamin C also boosts the immune system by promoting the proliferation of T cells and preventing T cell death.”

“In a cohort of 12,388 older adults without dementia at baseline, vitamin D exposure was associated with a 40% lower rate of incident dementia over ten years. The association was stronger in women and in people without the APOE4 allele.”

“Bile acids are produced by the liver and secreted into the digestive tract, where they emulsify dietary fats. The small intestine reabsorbs bile acids along with dietary cholesterol, fats, and fat-soluble vitamins such as A, D, E, and K.”

“Supplement studies provide additional context. In a prospective cohort of 12,388 dementia-free older adults, recorded vitamin D supplement exposure was associated with 40 percent lower dementia incidence over 10 years.”

“In this excerpt from Dr. Rhonda Patrick’s A4M LongevityFest 2023 keynote, she explains that vitamin D becomes a steroid hormone that regulates gene expression. Deficiency is common because UVB exposure, skin pigmentation, latitude, age, and indoor living change vitamin D production.”

“The body produces vitamin D in the skin after exposure to ultraviolet light — therefore, it is not technically a vitamin. Rather it is a fat-soluble steroid hormone, similar in structure to other hormones, such as testosterone and estrogen.”

“Vitamin C is concentrated in immune cells and protects immune cells from the reactive oxygen species produced during inflammation. Anecdotal data suggest that intravenous vitamin C can shorten the length of COVID-19-related hospitalization.”

“Dr. Patrick theorizes that the oxidized state of vitamin C, acting as a pro-oxidant, has the potential to kill cancer cells. Cancer cells have circumvented death; however, with a small prompt they can be induced to die.”

“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.”