For the modern epidemic od obesity, we should blame too little physical activity of people and very easily available unhealthy products. Well, in the modern world, most children and young people spend time at home in front of computers, and with books. The same applies to adults, because most of them lead a permanent lifestyle. Usually, after hours spent behind a desk or anywhere else, they come home to rest and don't want to go out and do physical activities anymore. Also people after a whole day don't want to prepare their own healthy meal, but often prefer to eat quick and tasty meals available in stores. And the lack of physical activity and eating unhealthy meals will definitely lead their to obesity.