And charcoaling your steak causes the fat to drip from the meat on to the coals, be converted to PAHs and then raise to attach to the meat, and cause cancer in you. Nobody has shown that insecticides in foods cause cancer in humans. Stop burning any of your foods. Charcoaled meats are loaded with polycyclic aromatic hydrocarbons that can cause cancer. Burnt toast contains AGEs.
Infections also can cause cancers.
Epstein-Barr virus is associated with lymphoid cancer. The human wart virus causes 100 percent of cervical cancers. So cervical cancer is a venereal disease. Hepatitis C causes liver cancer, so using injectable drugs causes cancer. If you belch and burp, go to your doctor and be treated for a Helicobacter infection that causes stomach cancer.