This passage is my homework which is given by my teacher to improve my writing skill.Now,I need some suggestions.

Since ancient times,except Tang Dynasty,the slim figure always conforms to standards of beauty of people.However, along with the increasing continually of the people's life level,the prevalence of obesity becomes higher and higher, which causes more and more diseases.So it becomes a major problem of the society's most pressing.Then,why is obesity increasingly serious in our country?I think there three reasons for this phenomenon.

Perhaps, at the mention of the reasons about obesity, the first cause might be irregular eating habits and overeating.Because of the improvement of living standards,people choose various kinds of gourmet as long as they want. Unfortunately,this kind of food not only bring the nutrition but also bring the obesity's issue.Because the gourmet include some junk food.And there are some hormone and high calorie leading to the obesity.

Probably lack of exercise is also a reason which we can't ignore.Many people engorge,and they can keep the slim figure.But for other people,they cannot.I consider the secret is exercise.Because the development of society speed up our pace of life,many people have to study,work and competition all the time.They are in classrooms,offices or other places except for playground.Like this,how could they not become fatter and fatter.

The last but not least,the gene also make the problem of obesity. Scientists have discovered a genetic cause of severe obesity in children.When a baby was born,he gets blue eyes,brown hair and others from his parents including the gene of obesity.In other words,the different obese gene make different figure to a degree.

To sum up,the reasons of obesity is different for different people.Some reasons we can change,but some others we can't.Just finding a right way to live so that we can avoid the phenomenon of obesity.