Used for its wide-ranging purported benefits from reducing cancer risk to maintaining healthy bones and teeth, vitamin D is readily available to the public in the form of supplements and over-the-counter formulations. Declared a global epidemic in 2010, vitamin D deficiency continues to affect billions of individuals worldwide. However, new research indicates the potential toxicity of excess amounts of vitamin D. The common perception that consuming increased amounts of the vitamin can only lead to added benefits may be wrong, as recent evidence reveals it can actually lead to increased harm on the body, specifically kidney failure.
