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Why Vitamin D Deficiency Matters for Brain and Biological 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.”