Because the IQ Plus affects are cumulative in the body you can go years at a minimal exposure and still develop high and potentially dangerous levels of lead in the body.Here is a google search on Lead and IQHere is MedLine's report on lead poisoningMercury is the next most dangerous toxin affecting the body. Unfortunately we continue to expose the population with dangerous amounts of mercury with each vaccine shot. http://boostupmuscles.com/iq-plus/