Cancer

Cancer is the uncontrolled growth of abnormal cells, which can form malignant tumours that invade surrounding tissues and spread to other parts of the body. Diet is one of many factors studied in relation to cancer risk: some food components, such as certain Brassica phytochemicals, are investigated for possible protective effects, while others, like heterocyclic amines formed when meat is charred, or the mycotoxin aflatoxin, are established or suspected carcinogens. Evidence is weighed carefully in nutrition guidance, which emphasizes overall dietary patterns rather than single foods.