... pro-cessing, and preparation shows that salt and salt-preservedfoods are probably a cause of stomach cancer, and that foodscontaminated with aflatoxins are a cause of liver cancer.Salt is necessary ... fruits probably protect against cancers of the mouth, larynx, pharynx, oesophagus, and stomach, and that fruits also probably protect against lung cancer; and that allium vegetables, and garlic specifically,probably ... experiencedcomparatively high rates of cancers of the upperCHAPTER 1aerodigestive tract (of the mouth, pharynx, larynx,nasopharynx, and oesophagus), and of the stomach,liver (primary), and cervix....