Dr. Thomas E. Levy is a board certified cardiologist and has written six books on health-related issues. Most of his work has centered on how to restore and maintain good health in the face of the many different forms of toxicity that all of us face, typically on a daily basis. He no longer has a clinical practice of medicine and cardiology. Rather, he limits himself to research and writing at this time, and he is currently working on his seventh book, Death by Calcium: The Supplement that Kills.