tokens: Recent medical problems and sedentary lifestyle . It is certainly true that modern people are facing up to a new health problems and ailments than before . Many people claim that it is because of sedentary lifestlyle . However, while I accept that sedentary lifestyle is one of the key factors, I believe that some other factors are having even a greater impact . To begin with, I agree that sedentary lifestyle lead to many serious health problems . The main reason why people are becoming so addicted to sitting at their homes even for the whole day is an advance technology . In earlier times, for instance, even the types of entertainment tools were not in large numbers and all of them required physical presence and as a result they had more outdoor activities . Nowadays people, especially inhabitants of cities, are spending most of their time on sitting in front of TV or other tools . Nevertheless, there are some other causes why people are experiencing serious medical problems . Firstly, the environment of the modern world polluted very significantly from greenhouse gas emissions and other gasses . Many people, for example, are suffering from allergy because of these gasses . Secondly, foods with a low quality such as fast foods, junk foods and any genetically modified ones are influencing to our health very negatively . Finally, life becoming more stressful due to some recent problems such as traffic gam, traffic accidents and others . Given these evidences, it can be seen that people are facing up with many recently appeared illnesses due to aforementioned reasons .