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> The major natural source of vitamin D is synthesis of cholecalciferol in the lower layers of the epidermis of the skin, through a photochemical reaction with
by legulere 2y ago
> The major natural source of vitamin D is synthesis of cholecalciferol in the lower layers of the epidermis of the skin, through a photochemical reaction with Ultraviolet B (UV-B) radiation from sun exposure or UV-B lamps.[
https://en.wikipedia.org/wiki/Vitamin_D https://en.wikipedia.org/wiki/Vitamin_D
- dredmorbius 2y agoYeah, very poor wording on my part as I was addressing the false claim in GP that only sunlight-based synthesis would provide vit-D. Diet is an alternate source. More in my other follow-up response.
- seszett 2y agoI said that they couldn't have another way to synthesise vitamin D than sunlight, it can only be synthesised by sunlight. So for the Inuit, vitamin D mostly comes from diet. The claim I was responding to was "they [unlike other humans] don't need sun to produce vitamin D". They do, they just don't rely much on this source because it doesn't work in their environment.
- dredmorbius 2y agoFair enough. We both could have communicated more clearly :-/