"Nitrosamines cause cancer of the liver, stomach, brain, bladder, kidneys and several other organs. Dr. William Lijinski, of the University of Nebraska, says they are "perfect carcinogens." When chemical preservatives and color enhancers are ingested, they cause the body to produce nitrosamines. Another source is nitrates and nitrites, which are heavily added to meat during processing. Runoff of nitrates and nitrites from fields sprayed with chemical fertilizers get into aquifers and wells and, when the water is drunk, can lead to cancer...