Did you know that eating burnt food has been shown to be a cause of cancer. Over heating food could cause the formation of cancer causing compounds, such as heterocyclic amines. Heterocyclic aromatic amines is a chemical compound that containing one or more heterocyclic ring and are linked to cancer. They often form when meat/food is cooked at high temperatures by being, fried, grilled, broiled, or cooked for to long. Some health advisors have recommend that toast be eaten at a golden-yellow color than a brown or slightly burnt color. Acrylamide is another cancer causing compound found in burnt toast, various hair dye, cereals, and cigarette smoke. After acrylamide is consumed it turns into glycidamide, which can cause extensive damage to the DNA and cause mutation. There are symptoms to cancer such as lumps/swollen glands, trouble swallowing, blood in the urine, blood not clotting, coughing blood, fever, night sweats and weight loss. Since some of these symptoms can be found in other illnesses(not cancer); if you have some of these symptoms, you should see a doctor for answers. Learn more causes. More symptoms.