One theory is that it reduces free radicals . Free radicals are highly active molecular fragments formed during the production of energy in the cells. They have high energy, like sparks in a fireplace, and this energy can be used by the body, when properly handled. However, if free radicals get out of control, they can cause damage to surrounding tissues, just as sparks that get out of a fireplace can cause the rug to catch fire. Excess free radicals contribute to the obvious signs of aging such as wrinkling and loss of skin elasticity.
Internal damage is less visible but even more serious.
In addition to the formation of free radicals in the body, people are exposed to them in the environment from various sources such as polluted air, certain foods and drugs. Heavy metals also cause an increased production of free radicals. One of the most significant properties of EDTA is its ability to remove heavy metals like lead and excessive iron that may have accumulated in the body. Free radicals are thought to contribute to the development of vascular and other diseases. The removal of heavy metals that increase free radicals may explain the effect EDTA has in helping to prevent and reverse vascular disease.