Vitamin D has received much attention in recent years. There is evidence that vitamin D deficiency may increase the risk for a variety of chronic diseases , such as cardiovascular disease, cancer, autoimmune diseases and type 2 diabetes. Is there sufficient evidence to recommend vitamin D supplementation to prevent these conditions?
Professor Haakon E. Meyer and researcher Kristin Holvik from the Norwegian Institute of Public Health, together with Professor Paul Lips from the VU Medical Centre in Amsterdam, Netherlands reviewed the existing published research. They concluded that combined supplementation of vitamin D and calcium can prevent fractures in the elderly. However, they agree that vitamin D supplements should not be recommended to prevent chronic diseases before reliable knowledge about the efficacy and any adverse effects are available.
source: health canal