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The body will naturally produce Vitamin D when you are out in direct sunlight. Foods that are sources of Vitamin D include tuna, salmon and eggs. Of course, that yummy cod liver oil
http://answers.ask.com/Fitness_and_Nutrition/Nutri...
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The best source for Vitamin D is good old fashion sunlight, but there are a few foods that will help with you daily intake of Vitamin D: fish (tuna, salmon, mackerel, sardines), milk
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Vitamin A is often measured in International Units, which appear on food and supplement labels. Vitamin A can also be measured in micrograms of retinol equivalents. A retinol equivalent
http://www.ehow.com/way_5155303_sources-vitamin.ht...
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