Doctors in Britain are worried because British teenagers eat a lot of crisps, sweets. Most teenagers don't have enough fruit or vegetables and more than one million schoolchildren are overweight. Some teenagers say that they don't have time to eat good food, but kids who have bad eating habits often have health problems when they are older. Fast food is typical of American culture and it is popular in the country where they are born there. American fast food is now part of life all over the world. McDonald's and Burger King have restaurants in many countries on all the continents. The only good thing about fast food is its low price. In fact, a steady diet of burgers, chips and cola doesn't fill your body with vitamins and minerals you need to stay healthy. It is full of calories but it doesn't have many important nutrients (питательные вещества). Now doctors give young people books and games about food diet. Having healthy food and a balanced diet can help you feel better and live longer.