SUNLIGHT AS THE SOURCE. “The food of most animals contains, at most, only traces of cholecalciferol. An adequate supply of cholecalciferol can therefore only be obtained by exposure of skin to UVB radiation from the sun.”
https://lnkd.in/e5hTuW74
linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022