FoundMyFitness #102 Why Vitamin D Deficiency Accelerates Brain Aging
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May 21, 2025 Explore the fascinating role of vitamin D as a steroid hormone that regulates a significant portion of our genome. Discover that up to 70% of Americans are deficient, increasing their dementia risk. A groundbreaking study shows that vitamin D supplementation can cut dementia risk by 40%, especially for those with genetic predispositions. Learn how vitamin D affects cognitive function, the importance of optimal blood levels, and why women may benefit more. Uncover insights on how it directly supports brain health and combats aging.
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Vitamin D Cuts Dementia Risk
- Vitamin D supplementation lowers dementia risk by around 40% over a decade.
- This risk reduction also applies to adults with mild cognitive impairment and genetic risk (ApoE4).
Vitamin D's Genetic Role & Deficiency
- Vitamin D is a steroid hormone regulating nearly 5% of the human genome.
- Up to 70% of Americans have deficient or insufficient vitamin D levels.
Supplement to Correct Deficiency
- Take 2,000 to 4,000 IUs of vitamin D daily to correct deficiency.
- Sun exposure is limited by sunscreen, skin pigmentation, age, and latitude, so supplements are essential.