In recent years, an increasing number of teenagers have the problem of obesity（肥胖）. This problem shouldn’t be ignored. It’s harmful disorder that can cause a number of health problems in children. Many factors in life play an important role in developing obesity among teenagers. Generally, obesity happens when a Person uses more calories than he burns up. A child of fat parents is at higher risk to develop obesity. If both the parents are overweight, then there are 80% chances of developing obesity in children. Also, poor eating habits and lack of exerci se can develop obesity in teenagers. Obesity is a serious condition as it can result in many health problems in any age. Fat children are at greater risk of developing diabetes, high blood pressure, heart diseases and breathing problems. A fat child also shows signs such as daytime sleepiness, morning headache, ete. In addition to these physical effects, obesity in children causes some serious psychological effects. Fat children car often laughed at by other for their being overweight. It can create a low self-esteem in them. It contributes to poor memory and poor performance at school. Also they hate attending the social events. Obesity among teenagers can be treated by changing diets, increasing physical activities and taking certain medicine. Foods containing fats and high calories should be strictly removed from their diet. However, you should be careful that teenagers should get enough nutrients required for a healthy growth through their diet. You should make sure the children join in more physical activities and exercise. In some severe cases, the drugs should be given only after seeing the doctor.