Prefer to obtain VITAMIN D from Sun and Food
Sunshine-Derived VITAMIN D3 |
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We are designed to be in the sun - ideally, we can produce VITAMIN D3 from UV-B spectrum sunlight acting on the skin which converts cholesterol precursor(7-DHC) in the skin into D3. UV-B rays occur when the zenith angle of the sun is > 45°, typically 10am to 2pm, and depends on latitude and season. Obtaining sun at these times optimizes skin's VITAMIN D production, whilst minimizing UV-A damage to skin. A light skinned person needs at least 30 minutes of ~ 1/3 body (arms, lower legs, face, hands) exposure, without sunscreen, and with clear skies (Up to 1 or more hours may be needed for darker skinned people and the elderly). For more information on how to effectively and safely obtain VITAMIN D3 by exposing skin to sunlight: |
