Research has proven there is a clear link between vitamin D blood levels and bone mineral density (BMD). In many people, but especially in the elderly, vitamin D deficiency is common. In the elderly this deficiency often occurs due to reduced exposure to sunlight, as well as a reduced ability to synthesize vitamin D in the skin. Vitamin D is necessary for the intestinal absorption of calcium. When levels are low, less calcium enters the body and is therefore unavailable for bone mineralization and support. This overall depletion leads to reduced bone structure and strength, which is often more prevalent in older women. A recent study published in Osteoporosis International (March 2010), reported a positive increase in BMD in postmenopausal women after daily supplementation with vitamin D and calcium. Read More