9. Artificial Sweeteners
Here’s one that deserves a well-earned place on the list of the worst of the worst. These days, artificial sweeteners like aspartame can be found in many processed foods, even if they are not advertised as being low calorie or “diet.” Aspartame is a potentially cancer-causing substance since it is broken down during digestion into a toxic substance called DKP, which is linked to certain cancers, and the formation of brain tumors.