A bad effect of fast food restaurants are the energy consumed from it. Research shows that 29~30 percent of children's energy comes from fast food. Also there is an additional 57 calories more than the balance of the calories that need to be consumed in a day. Fast food gives you a lot of calories and also a small energy. A lot of people around the world are consuming this sort of food and they should always remember that it ruins their state of balance in their body.