There are concerns about the safety of using teflon and nonstick pans, with some outlets suggesting they may be toxic or release harmful chemicals into food. Experts are weighing in on warning signs that a nonstick pan may be degrading and should be replaced. The safety of nonstick pans, particularly those with scratches or other damage, is being questioned, with some sources recommending alternatives such as ceramic cookware or non-toxic nonstick pans.