Mon, Jun-18-18, 10:13
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Senior Member
Posts: 15,075
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Plan: mostly milkfat
Stats: 190/152.4/154
BF:
Progress: 104%
Location: Ontario
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D2 is a different form entirely. We make vitamin D from 7 dehydrocholesterol, it's sort of a precursor for what we usually call "cholesterol" as well. The sun doesn't protect kittens from rickets unless they have a dietary source of 7 dehydrocholesterol, so it's sort of conditionally essential along with vitamin D for them, that always makes me wonder if a dietary source of this cholesterol precursor might help us when we get older--food sources that aren't that high in vitamin D itself might help anyways on that front. I understand mice are an excellent source.
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