Many facts suggest that children are overweight and the situation is getting worse, according to the doctors. I feel there are a number of reasons for this.
Some people blame the fact that we are surrounded （包围） by shops selling unhealthy, fatty foods, such as fried chicken and ice cream, at low prices. This has turned out a whole generation of grown-ups who seldom cook a meal for themselves. If there were fewer of these restaurants, then probably children would buy less take-away food.
There is another argument that blames parents for allowing their children to become overweight. I agree with this, because good eating habits begin early in life, long before children start to visit fast food shops. If children are given fried chicken and chocolate rather than healthy food, or are always allowed to choose what they eat, they will go for sweet and salty foods every time, and this will carry on throughout their lives.
There is a third reason for this situation. Children these days take very little exercise. They do not walk to school. When they get home, they sit in front of the television or their computers and play computer games. Not only is this an unhealthy pastime（消遣）, it also gives them time to eat more unhealthy food.What they need is to go outside and play active games or sports.
The above are the main reasons for this problem, and therefore we have to encourage young people to be more active, as well as steering them away from fast food shops and bad eating habits.

许多事实表明儿童肥胖问题正日益严重，这是医生得出的结论。我觉得，原因有以下几点：
一些人将问题归因于那些包围我们的、卖廉价不健康和高脂肪食品，如炸鸡和冰激凌的商店，这些商店已经使得整个一代人自己不下厨；若这样的食品店少一些，孩子们买外卖也会少一些。
另外还有一种争论，那就是责备做父母的允许自己的孩子过胖；我同意这个观点，因为好的饮食习惯要从小做起，要远在孩子光顾快餐店之前开始培养。若让孩子吃炸鸡和巧克力而不是健康食品，或者是让他们自己选择喜欢吃的食品，那他们每次都会吃甜的和很咸的食品，而且，这种喜好会贯串他们的一生。
还有第三种原因，现在的孩子很少锻炼，他们要么坐在电视机前，要么坐在电脑前玩电脑游戏。这不仅是一种不健康的消遣，而且更让他们有时间去吃更多的不健康食品；他们现在要做的是走出去，去做一些积极向上的活动或体育运动。
以上是该问题的几个主要成因，因此，我们须鼓励年轻人变得更活跃，引导他们远离快餐店，并改掉不良的饮食习惯。