Chelation, a biologically based practice, describes a chemical reaction in which certain molecules bind to metal atoms (such as calcium, copper, iron, or lead). Chelating drugs, such as ethylenediaminetetraacetic acid (EDTA), bind with metals so that they can be excreted from the body. These drugs are commonly used in conventional medicine to treat lead poisoning, iron overdose, and other heavy metal poisonings.
Practitioners of chelation therapy believe that many disorders are caused by having too much of a metal in the body even when people were not exposed to the metal and blood tests do not show high levels of the metal. Thus, they treat many different disorders with chelating drugs. Notably, the U.S. Food and Drug Administration (FDA) does not recommend the use of chelation therapy outside of research settings other than for treatment of heavy metal poisoning.
Medicinal Uses of Chelation Therapy
Chelation therapy with EDTA has been suggested as a way to remove calcium and thus treat atherosclerosis and help prevent heart attacks and strokes. However, studies suggest that these benefits of chelation therapy are insignificant or nonexistent.
Possible Side Effects of Chelation Therapy
Side effects of chelation therapy to remove calcium include a low level of calcium, which can be serious and rarely is fatal. Other possible side effects of EDTA include low blood pressure, vomiting, fatigue, headache, seizures, and muscle and joint pains. Use of chelation therapy may also cause harm by altering other body chemistries, including causing low blood sugar.
More Information
The following English-language resource may be useful. Please note that The Manual is not responsible for the content of this resource.
National Center for Complementary and Integrative Health (NCCIH): Chelation for Coronary Heart Disease
