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Researchers have found that when very overweight people, who

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Researchers have found that when very overweight people, who [#permalink] New post 10 Apr 2005, 02:56
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Researchers have found that when very overweight people, who tend to have relatively low metabolic rates, lose weight primarily through dieting, their metabolism generally remain unchanged. They will thus burn significantly fewer calories at the new weight than do people whose weight is normally at that level. Such newly thin persons will, therefore, ultimately regain weight until their body size again matches their metabolic rate.

The conclusion of the argument above depends on which of the following assumptions?

A: Relatively few very overweight people who have dieted down to a new weight tend to continue to consume substantially fewer calories than do people whose normal weight is at that level.
B: The metabolisms of people who are usually not overweight are much more able to vary than the metabolisms of people who have been very overweight.
C: The amount of calories that a person usually burns in a day is determined more by the amount that is consumed that day than by the current weight of the individual.
D: Reseachers have not yet determined whether the metabolic rates of formerly very overweight individuals can be accelerated by means of chemical agents.
E: Because of the constancy of their metabolic rates, people who are at their usual weight normally have as much difficulty gaining weight as they do losing it.
[Reveal] Spoiler: OA
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 [#permalink] New post 10 Apr 2005, 04:58
I will go with 'C'

Conclusion:Regain weight until their body size again matches their metabolic rate.

A: Relatively few very overweight people who have dieted down to a new weight tend to continue to consume substantially fewer calories than do people whose normal weight is at that level.
If this is true, they will continue to lose weight.

B: The metabolisms of people who are usually not overweight are much more able to vary than the metabolisms of people who have been very overweight.
Nothing to do with the conclusion.

C: The amount of calories that a person usually burns in a day is determined more by the amount that is consumed that day than by the current weight of the individual.
This is it. Only then will the person regain his weight.

D: Reseachers have not yet determined whether the metabolic rates of formerly very overweight individuals can be accelerated by means of chemical agents.
Nothing to do with the conclusion.

E: Because of the constancy of their metabolic rates, people who are at their usual weight normally have as much difficulty gaining weight as they do losing it.
Nothing to do with the conclusion.
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Re: CR - Overweight [#permalink] New post 10 Apr 2005, 06:59
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Researchers have found that when very overweight people, who tend to have relatively low metabolic rates, lose weight primarily through dieting, their metabolism generally remain unchanged. They will thus burn significantly fewer calories at the new weight than do people whose weight is normally at that level. Such newly thin persons will, therefore, ultimately regain weight until their body size again matches their metabolic rate.

The conclusion of the argument above depends on which of the following assumptions?

A: Relatively few very overweight people who have dieted down to a new weight tend to continue to consume substantially fewer calories than do people whose normal weight is at that level.

YES. We know from the question that the metabolism of these very overweight people remains unchanged despite their weight loss. As such, in order to maintain their lower weight, they will have to consume fewer calories than people whose normal weight is at that level (and whose metabolisms are faster). If these newly thinner very overweight people maintain the same calorie count as their normal weight counterparts, they will gain weight. The fact that few of them do means that they will regain weight until their body size matches their metabolic rate.

B: The metabolisms of people who are usually not overweight are much more able to vary than the metabolisms of people who have been very overweight.

Irrelevant.

C: The amount of calories that a person usually burns in a day is determined more by the amount that is consumed that day than by the current weight of the individual.

This contradicts the passage. The passage tells us that very overweight people tend to have slower metabolic rates. Slower metabolic rates means that they will burn fewer calories per day. This rate is unrelated to the amount of calories consumed and relies instead on the weight of the individual (of course, this is a bit tricky, since very overweight people's metabolic rates don't change a lot when they lose weight through dieting... sigh).

D: Reseachers have not yet determined whether the metabolic rates of formerly very overweight individuals can be accelerated by means of chemical agents.

Irrelevant.

E: Because of the constancy of their metabolic rates, people who are at their usual weight normally have as much difficulty gaining weight as they do losing it.

Irrelevant.

I'd go with A because...

We know from the question that when very overweight people lose weight by dieting alone, their metabolism remains the same. That means that they cannot
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 [#permalink] New post 11 Apr 2005, 22:51
Thanks everyone!! The OA is (A).
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Researchers have found that when very overweight people, who [#permalink] New post 14 Sep 2005, 10:11
Researchers have found that when very overweight people, who tend to have relatively low metabolic rates, lose weight primarily thourgh dieting, their metabolisms, generally remain unchanged. The will thus burn significantly fewer calories at the new weight than do people whose weight is normally at that level. Such newly thin person will, therefore, ultimately regain weight until their body size again matches their metabolic rate.

The conclusion of the argument above depends on which of the following assumptions?

a) Relatively few overweight people who have dieted down to a new weight tend to continue to consume substatially fewer calories than do people whose normal weight is at that level.

b) The metabolisms of people who are usually not overweight are much more able to vary than the metabolisms of people who have been very overweight.

c) The amount of calories that a person usually burns in a day is determined more by the amount that is consumed that day than by the current weight individuals can be accelerated by means of chemical agents.

d) Researchers have not yet determined whether the metabolic rates of formerly very overweight individuals can be accelerated by means of chemical agents.

e) Because of the constancy of their metabolic rates, people who are at their usual weight normally have as much difficulty gaining weight as they do losing it.

Pls share us your answer and explanation. Thanks.
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 [#permalink] New post 14 Sep 2005, 11:00
IMO A, the argument assumes overweight people after losing weight by consuming less food to cater to their low maetabolic rate, will start consuming more food after they achieve their goal....that is why their weight will increase....
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 [#permalink] New post 14 Sep 2005, 11:37
good one... I felt for it and choose B, now I know that I need to be little more careful.
E it si.
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 [#permalink] New post 14 Sep 2005, 11:37
Sorry wrong button....
I will pick A.
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Re: CR-Overweight [#permalink] New post 14 Sep 2005, 12:10
Go with A

Conclusion - new thin ppl will gain it back...

Assumption..they keep it eating a lot.

jinino wrote:
Researchers have found that when very overweight people, who tend to have relatively low metabolic rates, lose weight primarily thourgh dieting, their metabolisms, generally remain unchanged. The will thus burn significantly fewer calories at the new weight than do people whose weight is normally at that level. Such newly thin person will, therefore, ultimately regain weight until their body size again matches their metabolic rate.

The conclusion of the argument above depends on which of the following assumptions?

a) Relatively few overweight people who have dieted down to a new weight tend to continue to consume substatially fewer calories than do people whose normal weight is at that level.

b) The metabolisms of people who are usually not overweight are much more able to vary than the metabolisms of people who have been very overweight.

c) The amount of calories that a person usually burns in a day is determined more by the amount that is consumed that day than by the current weight individuals can be accelerated by means of chemical agents.

d) Researchers have not yet determined whether the metabolic rates of formerly very overweight individuals can be accelerated by means of chemical agents.

e) Because of the constancy of their metabolic rates, people who are at their usual weight normally have as much difficulty gaining weight as they do losing it.

Pls share us your answer and explanation. Thanks.
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 [#permalink] New post 15 Sep 2005, 10:32
The OA is A.

Here is the official explanation:

If, compared with people who have not been overweight, newly thin people burned fewer calories but also generally consumed fewer calories, one could not reliably conclude that the newly think people would regain weight. Therefore, the conclusion assumes that the newly thin do not generally consume fewer calories, making choice A the best answer.

The conclusion does not rely on differences in the variability of the metabolism (choice B), just on differences in the rate of metabolism, nor does it rely on the relative significance of different factors in determining how many calories a pwerson burns in a day (choice C). Neither does the conclusion assume anything about whether accelerators for the metabolism have been discovered (choice D), or about why some people have difficulty gaining weight (choice E).
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Researchers have found that when very overweight people, who [#permalink] New post 30 Jan 2006, 19:35
Researchers have found that when very overweight people, who tend to have relatively
low metabolic rates, lose weight primarily through dieting, their metabolisms generally
remain unchanged. They will thus burn significantly fewer calories at the new weight than
do people whose weight is normally at that level. Such newly thin persons will, therefore,
ultimately regain weight until their body size again matches their metabolic rate.
The conclusion of the argument above depends on which of the following assumptions?

A. Relatively few very overweight people who have dieted down to a new weight tend tocontinue to consume substantially fewer calories than do people whose normal weight is atthat level.

B. The metabolisms of people who are usually not overweight are much more able to vary than themetabolisms of people who have been very overweight.

C. The amount of calories that a person usually burns in a day is determined more by theamount that is consumed that day than by the current weight of the individual.

D. Researchers have not yet determined whether the metabolic rates of formerly very overweightindividuals can be accelerated by means of chemical agents.

E. Because of the constancy of their metabolic rates, people who are at their usual weightnormally have as much difficulty gaining weight as they do losing it.

Pls explain your reasoning
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 [#permalink] New post 30 Jan 2006, 21:59
My pick is (C).

(B), (D) and (E) are out of scope.

The premise of the srgument says that "metabolism of overweight people who reduce through dieting remains unchanged".

(A) Relatively few very overweight people who have dieted down to a new weight tend tocontinue to consume substantially fewer calories than do people whose normal weight is atthat level. -- [color=orange]This talks about few people continuing to consume fewer calories after reducing weight. This didnt quite appeal to me.[/color]
(C) The amount of calories that a person usually burns in a day is determined more by theamount that is consumed that day than by the current weight of the individual. -- This sounds correct assumtion. Because the argument on the whole is dealing with people dieting(eating less food) and there rate of burning calories.
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Re: CR-overweight people [#permalink] New post 30 Jan 2006, 22:19
A

Negate A, the conclusion fails: If newly thin people consumed less calories, it will be hard to argue that they will regain their weight.

I feel C weakens the conclusion.....
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 [#permalink] New post 31 Jan 2006, 16:15
A strengthens.
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Re: CR-overweight people [#permalink] New post 31 Jan 2006, 20:25
TeHCM wrote:
A

Negate A, the conclusion fails: If newly thin people consumed less calories, it will be hard to argue that they will regain their weight.

I feel C weakens the conclusion.....


TeHCM you got it ......OA is A
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 [#permalink] New post 01 Feb 2006, 12:22
I too go with A , thats the only answer which supports the argument, I too got the answer by negating
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 [#permalink] New post 05 Feb 2006, 01:05
(A) stands. Whose to say that such people don`t need to eat so much because they had a gastric bypass or some similiar operation?
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 [#permalink] New post 05 Feb 2006, 11:43
Got A using negation. If you negate it conclusion will fall apart
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metabolism [#permalink] New post 27 Sep 2007, 10:35
18. Researchers have found that when very overweight people, who tend to have relatively low metabolic rates, lose weight primarily through dieting, their metabolisms generally remain unchanged. They will thus burn significantly fewer calories at the new weight than do people whose weight is normally at that level. Such newly thin persons will, therefore, ultimately regain weight until their body size again matches their metabolic rate.
The conclusion of the argument above depends on which of the following assumptions?
(A) Relatively few very overweight people who have dieted down to a new weight tend to continue to consume substantially fewer calories than do people whose normal weight is at that level.
(B) The metabolisms of people who are usually not overweight are much more able to vary than the metabolisms of people who have been very overweight.
(C) The amount of calories that a person usually burns in a day is determined more by the amount that is consumed that day than by the current weight of the individual.
(D) Researchers have not yet determined whether the metabolic rates of formerly very overweight individuals can be accelerated by means of chemical agents.
(E) Because of the constancy of their metabolic rates, people who are at their usual weight normally have as much difficulty gaining weight as they do losing it.
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Re: metabolism [#permalink] New post 27 Sep 2007, 11:50
lnaik wrote:
18. Researchers have found that when very overweight people, who tend to have relatively low metabolic rates, lose weight primarily through dieting, their metabolisms generally remain unchanged. They will thus burn significantly fewer calories at the new weight than do people whose weight is normally at that level. Such newly thin persons will, therefore, ultimately regain weight until their body size again matches their metabolic rate.
The conclusion of the argument above depends on which of the following assumptions?
(A) Relatively few very overweight people who have dieted down to a new weight tend to continue to consume substantially fewer calories than do people whose normal weight is at that level.
(B) The metabolisms of people who are usually not overweight are much more able to vary than the metabolisms of people who have been very overweight.
(C) The amount of calories that a person usually burns in a day is determined more by the amount that is consumed that day than by the current weight of the individual.
(D) Researchers have not yet determined whether the metabolic rates of formerly very overweight individuals can be accelerated by means of chemical agents.
(E) Because of the constancy of their metabolic rates, people who are at their usual weight normally have as much difficulty gaining weight as they do losing it.


I say A b/c if this were true then overweight people would not regain the weight. This eliminates that possibility and fixes a flaw in the conclusion.
Re: metabolism   [#permalink] 27 Sep 2007, 11:50
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