Vitamin D Supplements Bad For Kidneys and Heart
For the past few years, many doctors have been telling their patients to take calcium supplements to insure theyre getting enough of the nutrient which is responsible for strong bones, teeth and muscles. And theyve also been promoting Vitamin D supplements as a way to prevent cancer, autoimmune diseases, and diabetes even heart disease. Well, a new study, just out, takes another look at this advice and concludes its probably wrong for most Americans and Canadians. In fact, some experts are saying too much vitamin D can damage the kidneys and heart.
According to the Institute of Medicine (an independent nonprofit agency which advises the U.S. government ) which did an extensive review of nearly 1,000 published studies on vitamin D and calcium, most Americans need no more than 600 international units (IUs) of vitamin D per day to maintain good health. People over age 70 may need as much as 800 IUs. But this amount is something we get from our diets and from only five minutes of sun exposure.
"When making these new recommendations, we took into account the study data, looking at national surveys of blood levels," Catherine Ross told CNN. She is a professor of nutritional sciences at Penn State University, University Park, and chairman of the committee that set the recommendations. "The blood levels indicate how much vitamin D you have in your blood, based on the amount of sunlight you are exposed to, how much vitamin D and calcium you have in your diet, and what type of supplements you are taking."