On Dieting

　　Nowadays more and more people are beginning to go on a diet. Some people are concerned with their health, and they go on a diet in order to lose unwanted weight. But still others, [1]especially the young women, are paying too much attention to their outward appearance. They [2]become the leading numbers who go on a diet.

　　[3]However, dieting might [4]bring great negative effects on people. [3]For one thing, quite a lot of people don’t really need dieting to keep health, and they diet just because they want to keep slim. For them, dieting [5]not only is useless but also might damage their health. [3]For another, some people lack enough knowledge on how to diet scientifically. [3]As a result, they are likely to suffer from malnutrition.

　　[6]Considering the serious damage of unhealthy dieting, we should be cautious in dieting. [3]In my opinion, dieting,[7]for whatever reasons, needs professional guidance. [8]Only with right guidance can dieting work [9]as we expect.