Our obsession with thinness is also fueled by health concerns.
It is true that in this country we have more overweighted people __1__
than ever before, and that, in many cases, being over weight
correlates an increased risk of heart and blood vessel disease. __2__
These diseases, therefore, may have as much to do with our __3__
way of life and our high-fat diets as with excessive weight. And __4__
the associate risk of cancer in the digestive system may be more __5__
about a dietary problem—too much fat and a lack of fiber than a __6__
weight problem.
The real concern, then, is not that we weigh too much, but
that we neither exercise enough or eat well. Exercise is necessary __7__
for strong bones and both heart and lung health. A balanced diet
without a lot of fat can also help the body avoid many diseases.
We should surely stop paying so much attention on weight. __8__
Simply being thin is not enough. It is actually hazardy if those who __9__
get(or already are) thin think they are automatically healthy and
thus free from paying attention to their overall life-style. Thinness
can be purely vainglory. __10__

答案及解析：
1.overweighted改为overweight
overweight本身就可以做形容词修饰people，不需要加ed。

2.correlates后加with
Correlate应与with连用，表示“A与B有关联”。

3.therefore改为however
从上下文来看，这里是转折而不是因果。

4.excessive改为excess
excess往往指数量上超过所需，多余。
excessive 往往有不赞同，否定的含义在里面，另外，excessive除了可以表示数量以外还可以表示程度，表达抽象概念。比如
After cooking fish, pour off the excess fat.
The government says that local authority spending is excessive.

5.associate 改为associated
associated 表示“关联的，相关的”。

6.about改为of
这里的意思是“与之相关的消化系统患癌症的危险实际上是饮食问题引起的，而非体重问题” ，about意思为“相关的”，这里应该为of，表性质。

7.or改为nor
neither应和nor连用表示两者皆否定，而not才和or连用。

8.on改为to

9.hazardy改为hazardous
hazard的形容词是hazardous而不是hazardy。

10.purely改为pure