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Researchers have found that when very overweight people, who tend to h

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Researchers have found that when very overweight people, who tend to h [#permalink]

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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) 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.
[Reveal] Spoiler: OA

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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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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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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 14 Sep 2005, 11:11
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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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 14 Sep 2005, 12:00
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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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 14 Sep 2005, 13:10
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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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 15 Sep 2005, 11:32
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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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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 30 Jan 2006, 23:19
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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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 31 Jan 2006, 21:25
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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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 05 Feb 2006, 02:05
(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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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 05 Feb 2006, 12:43
Got A using negation. If you negate it conclusion will fall apart

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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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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.

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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 27 Sep 2007, 14:10
A, for the same reason.

Conclusion is that people will gain weight back. A supports that

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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 08 Jul 2008, 10:32
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. Presents the assumption.

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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 08 Jul 2008, 10:42
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I get A.

Premise: Overweight people who lose weight from dieting keep the same metabolism
Premise: They will burn less calories at the new lower weight than people who are normally at that weight.
---------------------------------------------------------------------------------------------------------
Conclusion: These people will regain weight until their body size matches their unchanged metabolism.

In order to reach that conclusion there is one premise (assumption) that we need. If the people are who lose weight by dieting will eventually regain weight than we HAVE to assume that they will stop dieting. Because if they continue to consume the same calories that they did to lose weight then they will not gain any of it back.

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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 11 Feb 2009, 22:17
My ans is A.
The argument claims that overweight people who lost wiight thru deiting will regain weight bcos their metabolim rate does not vary. This clearly assumes that most of the overweight ppl tend to consume substrantially more calories and hence tehre are relatively few overweight ppl who tend to consume less calerories
vishy007 wrote:
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: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 12 Feb 2009, 03:29
I will go with A...

Explanation. As the option states (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.

it means that the overweight people who have dieted will discontinue to eat fewer calories, and there metabolic rates are also slow so the body will regain the weight untill their body size matches the metabolic rate..

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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 13 Feb 2009, 20:18
xALIx wrote:
vishy007 wrote:
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.


Can someone explain why its not C?


You should find the scope of the argument and compare the scope to the meaning that C suggests. How to weigh or determin the amount of calories IS NOT a focus of argument, C out
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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 16 May 2010, 09:02
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.


please provide an answer with explanation..

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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 17 May 2010, 09:45
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.


Premise:
Calori burned (weight reduced person) , metabolic rate < calori burned (normal person ) , metabolic rate
over weight person - less food - less metabolic rate - less calori - normal weight

Conclusion:
Less weight person -more food -more metabolic rate - more cakori - normal weight

My Ans - C)

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Re: Researchers have found that when very overweight people, who tend to h [#permalink]

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New post 18 May 2010, 09:28
I pick (C)

premise says ==> overly weight people who tend to have relatively low metabolic rates, lose weight primarily through dieting, their metabolisms generally remain unchanged.

assumption ==> The amount of calories that a person usually burns in a day (low metabolism) is determined more by the amount that is consumed that day (dieting) than by the current weight of the individual.

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Re: Researchers have found that when very overweight people, who tend to h   [#permalink] 18 May 2010, 09:28

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