I tried this therapy....after several months of chelation, I had to have a stent...followed by another stent within 2 months, followed by a heart attack and a heart bypass...Have been fine for eight years since the bypass and no chelation....Need I say more? Stick with a REAL Doctor, do yourself a favor. Do your research and you'll find that both authors used to write every week for "The National Enquirer". Oh, one of the authors just died...from congestive Heart failure. Save your money.