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Other mammals synthesize vitamin D in their fur instead of their skin. We lost this option when we lost our fur, hence we’re more prone to vitamin D deficiencie
by czzr 5y ago
Other mammals synthesize vitamin D in their fur instead of their skin. We lost this option when we lost our fur, hence we’re more prone to vitamin D deficiencies.
- tpmx 5y agoVitamin D3 supplements are commonly made from sheep wool grease (lanolin).
- Aachen 5y agoWait, in fur? Hair is dead right? Or do those animals have something flow back in from the hair? Does our hair do that? Is our hair where our vitamin D is made?
- Someone 5y agoNot in(side) the hairs of their fur, on the hairs of their fur/in the entire fur. https://en.wikipedia.org/wiki/Vitamin_D#Evolution https://en.wikipedia.org/wiki/Vitamin_D#Evolution: In birds and fur-bearing mammals, fur or feathers block UV rays from reaching the skin. Instead, vitamin D is created from oily secretions of the skin deposited onto the feathers or fur, and is obtained orally during grooming. So they take vitamin D orally, producing it on their bodies.
- Aachen 5y agoI see, thanks!