![]() Just like humans, mushrooms have the capacity to produce vitamin D when exposed to ultraviolet light.Mushrooms, however, are usually grown in the dark and don't contain the vitamin. Common options include salmon, trout, mackerel, tuna, and eel.A 3-ounce sockeye salmon fillet contains about 450 international units (IUs) of vitamin D-a good portion of the 600 IUs that is the Institute of Medicine's recommended dietary allowance (800 IUs if you're over 70).And you get a bonus-heart-healthy omega-3 fatty acids! The finding has implications for flu epidemics since vitamin D, which is naturally produced by the human body when exposed to direct sunlight, has no significant side effects, costs little and can be several times more effective than anti-viral drugs or vaccines according to research in the American Journal of Clinical Nutrition.įatty fish can be a good source of vitamin D. The risk of suffering from flu can be reduced by 50% if they take vitamin D, doctors in Japan have found.
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