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No. D production is not produced internally, it's produced by the skin being exposed to ultraviolet radiation.
by Sunspark 3y ago
No. D production is not produced internally, it's produced by the skin being exposed to ultraviolet radiation.
- weinzierl 3y agoBut does the skin always produce the same amount of vitamin D just depending on the light and regardless of the levels in the body or is there a control loop that makes the skin produce less?
- Sunspark 3y agoIt ignores what's already in your liver. It will just keep producing until you stay out of the sun. Roofers have tons of vitamin D in their body. Amount produced is dependent on both duration and intensity.