| http://www.w3.org/ns/prov#value | - Low levels are also associated with a greater risk for a range of conditions, including depression, osteoporosis, arthritis, multiple sclerosis, type 1 diabetes and assorted aches and pains.???According to the government's Third National Health and Nutrition Examination Survey, an estimated 41 percent of American men and 53 percent of women have D levels that are less than the optimal levels of 30
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