Coronary artery disease has become the No. 1 killer in the U.S., with cancer not far behind. What links these and other common health issues of the day? Often it's heavy metals like mercury, lead and cadmium that have become inescapable in our modern life. Once these substances get in our bodies, they cause serious damage especially to our arteries and organs. Chelation therapy is an option for protecting the heart and enhancing health by defending against heavy metal toxins and preventing or reversing clogged arteries.