Hi,
in an article by dr. Gina Shaw, I read that "Vitamin B12 deficiency is usually symptomatic of a larger problem i.e. poor intestinal flora, poor absorption and also lack of sunlight." Even though lack of sunlight can lead to vitamin D deficiency, which again can cause the body to absorb less calcium, and calcium is needed for proper B12 absorption, I haven't seen any direct link between sunlight and B12 documented anywhere. Who has?
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