ealOrange juiceYogurtMargarineSoy beveragesThere are not many foods that are natural sources of vitamin D. Of those foods that have vitamin D naturally are (most to least):Fatty fish, such as salmon, tuna, and mackerelBeef liverCheeseEgg yolksMushroomsA relatively small amount of sun exposure can provide adequate vitamin D. In a study of naval personnel in submarines, six days of sun exposure prov