“The largest epidemiologic study ever conducted in North America of a childhood nervous system cancer known as neuroblastoma suggests women who take multivitamins during pregnancy can cut their children’s risk of the tumor by 30-40%. Researchers could not pinpoint which vitamin or vitamins were most responsible for the reduced risk, but say their findings support and are consistent with earlier studies indicating vitamin use during pregnancy seems to help protect against childhood leukemias and brain tumors…”

ScienceDaily, 8/30/02; Epidemiology 2002 Sep;13(5):575-80