We take it for granted that all these materials are tested for toxicity and data show that they are safe for human use. But you should not forget the fact that those studies are based on visible toxic effects. Many effects may not be visible immediately. Some may show up in the next generation. Another drawback of these studies is that all these are isolated studies. For toxicity testing when one particular compound is given to an experimental animal one has to understand the truth that the body of the experimental animal is challenged only with that one toxic material. The body physiology is so powerful that it can manage that toxic material even when administered in high amounts and manifests only very small toxic symptoms.
 

          However this is not the case with human consumption. When we humans consume those tested "safe" materials, our body is not only challenged with that particular compound but also with many more such so-called "tested safe compounds". Just as little drops make a mighty ocean or like the last straw on the camel's back, the body gets stressed  by the input of toxic chemicals. Therefore whatever is considered safe is safe for that experimental animal beyond belief, but it is not true for human beings. This scientific approach of determining safety for  human use is wrong and dangerous.

          Other physical stress comes in the form of radiation from  TV, computers, cell phones. The worst is the lack of exercise.  With all of the above we stress our body and when we introduce an abundance  of mental and physical stress we end up in diseases.