With less sun exposure and outdoor activities, your body may need more Vitamin D supplementation. Ask your physician to check your Vitamin D levels and if low, ask for recommendations to start Nature Made Vitamin D. For most Americans, sunlight provides the main source of Vitamin D. Few foods naturally contain Vitamin D, but those include fatty fish like salmon and egg yolks. Vitamin D helps to build and support strong bones by enhancing calcium absorption and also supports muscle function, strength and balance. Mushrooms are the only source of Vitamin D in the produce aisles. Add mushrooms to meatloaf, eggs, stroganoff, salads, and soups. See the link for more information on Vitamin D.