The word chelation is derived from the Greek word chele that means claw (like that of a scorpion or crab). The concept of chelation is based on the observation that when a certain amino acid complex called EDTA (ethylene-diamine-tetra-acetic acid) comes in contact with certain positively charged metals and other substances such as lead, iron, copper, calcium, magnesium, zinc, plutonium and manganese, it grabs them (hence the chele or claw), and removes them. Chelation therapy is the process of removing from the body the undesirable ionic material by the infusion, or taking orally, of an organic compound which has suitable chelating properties.

EDTA is a synthetic amino acid first used in the 1940's for treatment of heavy metal poisoning. It is widely recognized as effective for that use as well as certain others, including emergency treatment of hypercalcemia and the control of ventricular arrhythmias associated with digitalis toxicity indicated that EDTA was considered possibly effective in the treatment of occlusive vascular disorders caused by arteriosclerosis. EDTA grabs metallic cation such as Lead or Calcium from the body and forms a stable compound that is then excreted from the system. The stability of this bond is vital to success in chelation therapy. If the bond is weak, other chemicals can break this bond to form their own compounds.

One way to think about the chelation process is to compare it to the way we unclog our drains. We add a chemical to our drain. It dissolves the blockage. The resulting compound is removed from the drain using the existing plumbing system. Chelation process works in a similar manner on our body.

What Are The Benefits of Chelation Therapy?
Chelation therapy is widely used for the treatment of atherosclerosis and other chronic degenerative diseases involving the circulatory system. It also has other benefits. Many scientists suggest that the beneficial effect of chelation treatment is from the removal of metallic catalysts that causes excessive free radical proliferation. This reduces the oxidation of lipids, DNA, enzyme systems and lipoproteins. The chelation halts the bad effects and initiates the body's healing process, often reversing the damage. It removes the calcium and copper anions from the blood stream. The plaque lining the artery walls is made porous and brittle. Eventually they may get dislodged. Even if only a microscopic layer of the plaque is removed, it, along with a smoothening of the artery wall due to the healing of the cells that line the arteries, can improve the blood flow to the artery muscles substantially. This can prevent artery spasm and minimize or prevent angina pain. Many patients who could not walk due to muscle pain or angina pain have reported that they can walk without pain after chelation therapy.