Frequently, people who diet to lose weight become trapped in a vicious cycle. When those people diet, they not only lose weight, but their bodies become used to fewer calories and become accustomed to functioning at that lower rate of caloric intake. As a result, when they stop dieting and go back to eating amounts of food that would have just maintained their weight in the days before the diet, they take in far more calories than they need. Those excess calories produce excess weight.The passage above best supports which one of the following conclusions about people who diet to lose weight?The passage says dieting reduces both weight and the body’s needed calorie intake. So after dieting, the amount of food that used to maintain the person’s old weight may now be too much and may cause weight gain.
The key idea is that after dieting, a person cannot simply return to the
same pre-diet intake and expect to maintain the lower weight.
(A) They are bound to end up weighing more than when they started dieting.
Too strong. The passage says they may gain excess weight if they return to pre-diet eating amounts, but it does not say they must end up heavier than before.
(B) They should not diet if they desire to maintain their reduced weight.
Not supported. The passage does not say dieting should be avoided; it says post-diet eating must be adjusted.
(C) They must not go back to eating pre-diet amounts of food if they are to maintain their weight at the reduced level resulting from dieting.
This is correct. The passage says that after dieting, the body needs fewer calories, so returning to pre-diet food amounts would create excess calories and weight gain.
(D) They will have to eat even less than the amount of food allowed by their diets if they are to avoid gaining weight after they stop dieting.
Too strong. They may need to eat less than their pre-diet intake, but not necessarily less than the amount allowed during the diet.
(E) They never can go back to their pre-diet caloric intake without regaining all of the weight lost by dieting.
Too strong. The passage says excess calories produce excess weight, but it does not say they will regain all the lost weight.
Answer: (C)