the concept is called chelation."Chelators are used in chemical analysis, as water softeners,as shampoos as preservatives, and in medicine (chelation therapy), where they are employed to safely bind with poisonous metal agents such as mercury, arsenic, or lead to stabilize them and allow them to be excreted without further interaction with the body.""Fortunately, there are numerous automatic mechanisms in the body that help to control iron, many by chelation--compounds that bind to a toxic substance (such as iron) and render it nontoxic or nonactive. Albumin, a simple protein found in blood, acts as a chelator by loosely binding to iron."
www.luminet.net
