Canned food
Among processed foods, one of the worst choices are canned foods. Even foods with plenty of antioxidants become a risk when they are canned, e.g. canned tomatoes. According to nationwide testing of canned foods, almost 40% of cans contain a substance called bisphenol A, and commonly known as BPA. This substance is behind an increased risk of prostate cancer and breast cancer, and it is an endocrine disruptor that may cause several other diseases.