| http://www.w3.org/ns/prov#value | - However, factors like sunscreen use, pollution, season of the year, aging, and limited sunlight exposure can make it impossible to meet vitamin D needs without dietary or supplemental sources of vitamin D. Few foods contain naturally occurring vitamin D. Most people rely on fortified foods, including breakfast cereals, soy and rice milks, cow???s milk, juices, and margarine to meet their vitamin D
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