Search results for vitamin c

“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.”

“Though dosage details and optimal blood levels remain unknown, the link between vitamin D and brain health is too significant to ignore. In today's email, we'll explore the importance of vitamin D for brain and body health and break down this study in more detail.”

“A small randomized trial in girls with low magnesium intake found greater hip bone-mineral accrual with magnesium oxide, but it does not prove that supplements prevent or reverse osteoporosis in adults. Magnesium interacts with other nutrients, including vitamin D.”

“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.”

“Magnesium supports the enzymes involved in vitamin D metabolism, while vitamin K-dependent proteins help direct calcium handling. In a randomized trial, magnesium supplementation changed vitamin D metabolites in a manner that depended on baseline vitamin D status.”

“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.”

“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.”

“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.”

“Dr. Rhonda Patrick talks at SF Nerd Nite about transgenerational effects of caloric restriction on longevity, B-vitamins silencing bad genes, cognitive stimulation reversing neurodegenerative disease, exercise increases neurogenesis, and ways in which vitamin D might influence aging.”

“Vitamin D3 is converted into calcitriol, a steroid hormone that binds the vitamin D receptor and changes gene expression. In this clip from Dr. Rhonda Patrick's presentation at the Vibrant Wellness Longevity Summit, she explains how limited UVB exposure, skin pigmentation, age, and higher body fat can make low vitamin D status more likely.”