The Food and Drug Administration has wrapped up testing of vitamins for women and babies, and found that almost all contain trace amounts of lead.
Lead is of particular concern to pregnant women, fetuses and young children — particularly those under the age of six. Lead, a naturally occurring metal, is know to cause permanent brain damage, limiting IQ, causing behavioral and learning problems and affecting other aspects of development. Some studies have linked exposure to violent spates across the country, and the government has worked to limit exposure by banning or limiting the lead content in paints, gasoline and, most recently, lead in many toys and children's products.