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The U.S. Center for Disease Control has found that primary exposure to lead is from paint chips, drinking water, fertilizer, food, auto and industrial emissions, and dust.
 
High levels of cadmium are found in regions with high emissions from incinerators, coal plants, or cars, as well as in shellfish and cigarette smoke. Other common sources include rural drinking water wells, processed food, fertilizer, and old paint. Common exposures to aluminium include aluminium cookware, antiperspirants, cheese and other processed food.
The most common significant exposure for most people is to mercury vapour from amalgam fillings. Seafood contaminated with mercury is another issue of concern - generally larger fish have most mercury, due to bioaccumulation in the food chain. Another major exposure source to infants is from thimerosal, a water-soluble, cream-colored crystalline powder used as a preservative in vaccines that contain 49.6% mercury by weight.
There are many health problems that are associated with heavy metals, anything from damaging the heart, brain, liver, kidneys and more. Take a look at a more extensive list of health problems. |