It is not uncommon for a food additive that was orignally believed to be safe for consumers to later be found toxic. Some studies have found additives are a source of headaches, nausea, weakness and difficulty breathing. New research has shown that the mixture of additives and certain foods can damage human nerve cells [Source: Karen Lau ]. The truth is, we do not understand all of the long-term effects that additives could have on our health because man-made additives are a relatively new invention. More than likely your grandparents ate organic foods. For now, it is up to consumers to choose not to buy food with additives. They will not be banned until enough research is collected to determine the exact effects they have on the body. Buying organic is becoming increasingly popular as consumers become more aware of the adverse health effects of processed foods.