2--I don't think dieting is good for you.It's much better to eat a balanced diet and to never get overweight to begin with!
 
1--But what do you think about people who are obese? What should they do to lose weight?
 
2--They need to eat healthy foods，but they also have to increase the amount of physical exercise every day.  They don't have to cut out fattening foods altogeth-er，though.
 
1--So you think it's OK for people who are dieting to eat chocolate，don't you?
 
2--Sure，they can eat some chocolate.As long as they are exercising and eating mostly healthy  foods，there's  nothing wrong with having a small dessert.
 
1--How about drinking soda?
 
2--Many people gain weight by drinking far too much soda. Soda should be treated seriously;there's simply no nutritional value in it whatsoever.
 
1--And have you ever tried taking vitamins?
 
2--I used to take vitamins every day，but I don't take them anymore. Vitamins are good as a supplement，but they don't do much good if you don't have a wellbalanced diet to start.
 
1--How do you know so much about food and dieting?
 
2--You might not believe this，but I used to be twice the size that I am now!
 
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注解：
 
1.diets节食
2.balanced diet均衡饮食
3.supplement添加物，补充物
 
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译文：
 
1--对于人们进行各种各样的节食你怎么看?
2--我觉得节食对你不好。饮食最好要均衡，而且从小就得注意不要发胖。
1--但是那些已经肥胖的人该怎么办呢?他们应该怎么减肥。
2--他们要吃健康食品，不过还得同时增加每天的运动量。而且，不能一下子就把所有会使人肥胖的食物都停掉不吃。
1--那么你觉得正在节食的人吃些巧克力也是可以的?
2--当然，他们可以吃些巧克力。只要他们坚持锻炼，而且摄入的主要都是健康食品，那么吃点儿甜食也不碍事。
1--那喝汽水呢?
2--很多人体重增加都是因为喝了太多的汽水。汽水的问题应该认真对待，无论如何，那里面一丁点儿营养价值都没有。
1--那你有没有试过服用维生素片?
2--我曾经每天都吃点维生素片，但是我现在不吃了。维生素作为一种营养补充剂确实很好，但是如果你饮食摄入不均衡，那么它也不会有太大作用。
1--你怎么知道这么多关于饮食和减肥的知识呢?
2--你也许不相信，我以前比现在胖一倍。