![]() (Since the 1930s, manufacturers have voluntarily enriched these foods with vitamin D to help reduce the incidence of nutritional rickets.) That’s why foods like milk, cereal and some orange juices are vitamin D2- and D3-fortified. But because we don’t consume large enough quantities of these foods, they can’t be our sole source of vitamin D. There are two main kinds of vitamin D-vitamin D2 and vitamin D3-which you can get from (and occur naturally in) certain foods like salmon, tuna, mackerel and beef liver and egg yolks. ![]() The short answer is from food, the sun or supplements.
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