N-nitrosodimethylamine (NDMA) is a carcinogenic nitrosamine. It has not only been found in certain prescription drugs, but also in foods such as processed meat and beverages like beer. We know NDMA can transfer through the placenta, and this may explain the relationship between consumption of cured meat during pregnancy and the risk of childhood brain tumors. Indeed, hot dog consumption during pregnancy may increase childhood brain tumor risk by 33 percent, and sausage consumption may increase i