introduce too many preservatives, flavourings & colourings in order to keep products fresh & attractive and even to fulfill consumers’ needs. Indeed however, scientists ensure that some of these additives are so harmful. Therefore, children are becoming hyperactive at schools & many people are developing allergies, cancer, diabetes & food poising. Finally, fast food & ready-made meals can have also dangerous consequences on our health. In other terms, too few people prepare their own meals, nowadays, whereas the great majority of people eat in fast food restaurants fried foods, too much fat & soft drinks. So, many of them suffer from obesity (overweight) & different diseases such as diabetes & high blood pressure due to these unhealthy eating habits.