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:
The "Sunbath"- as
VITAMIN D Therapy"
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