All About Chelation

Abundant, durable, malleable, resistant to corrosion: No wonder lead has been such a popular metal throughout human history. Ancient Romans found a multitude of uses for it, from lining water pipes and drinking vessels to sweetening wine. What they didn't realize were the detrimental health effects of this metal. It is now believed that lead poisoning was responsible for the bizarre behavior, mental incompetence, gout, stillbirths, and sterility that afflicted the Roman aristocracy- and quite possibly contributed to the decline of the Roman Empire.

Fast forward to 1921, when General Motors engineer Thomas Midgley, Jr., came up with another use for lead. As a gasoline additive, it reduced engine knock and improved performance. Of course, it was known to be toxic. Thomas Midgley himself was plagued with a "mysterious illness" while experimenting with it and, in 1924, 15 refinery workers died and 300 more became severely psychotic as a result of working with leaded gasoline.

Continued: http://www.naturalnews.com/027338_chelation_health_blood.html