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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]

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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.
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Re: Researchers have found that when very overweight people [#permalink]

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09 Dec 2011, 11:21
+1A
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Re: Researchers have found that when very overweight people [#permalink]

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10 Dec 2011, 13:53
"therefore, ultimately regain weight until their body size again matches their metabolic
rate."

I was assuming this is the conclusion. And so I chose E because it states that people will usually stay at the weight even when people try to gain weight.
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Re: Researchers have found that when very overweight people [#permalink]

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11 Dec 2011, 03:12
tuanquang269 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.

I found this question in another topic, but the explanation is still unclear to me. So, I want to make new thread to open more discussion on this problem. OA later.

Negating option E: Because of the constancy of their metabolic rates, people who are at their usual weight normally don't have as much
difficulty gaining weight as they do losing it.This weakens the conclusion and is the correct answer
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Re: Researchers have found that when very overweight people [#permalink]

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12 Dec 2011, 01:56
+1 for E, if correct then will explain.
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Re: Researchers have found that when very overweight people [#permalink]

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23 Dec 2011, 05:04
Please post the OA with explanation....thanks..
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Re: Researchers have found that when very overweight people [#permalink]

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23 Dec 2011, 21:12
A..A newly thin person will regain the same weight(what was before dieting) if that person takes more calories as compared to what is suitable to his new weight.
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Re: Researchers have found that when very overweight people [#permalink]

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26 Dec 2011, 03:04
+1 E

Conclusion is new thin person will get back weight as there metabolism rate has not changed and they will burn less calorie

A ) has nothing to do with the conclusion
B ) has nothing to do with the conclusion
C ) possible as it talks abt your metabolic being static and will burn less calorie
D ) out of scope
E ) it talks about problem of static metabolism reaction.
But C assume that you will eat more then you can burn, but why will you do that when you are on diet
So its E
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Re: Researchers have found that when very overweight people [#permalink]

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26 Dec 2011, 04:46
IMO C , A is incorrect as it has mentioned "very few" where in the passage it has no where mentioned. E we can not assume on the basis of above passage and not logically correct to fit enough.
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Re: Researchers have found that when very overweight people [#permalink]

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27 Dec 2011, 11:42
I think it is A but I am waiting for the OA & OE.
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Re: Researchers have found that when very overweight people [#permalink]

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27 Dec 2011, 17:58
A clearly
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Re: Researchers have found that when very overweight people [#permalink]

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07 Jan 2012, 21:53
E
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Re: Researchers have found that when very overweight people, who [#permalink]

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24 Apr 2012, 06:04
For some reasons, i find this question is hard and confusing (mostly because of the vocab). I was able to make the right choice but mostly through POE rather than logical thinking. Wonder if anyone think the same?
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Researchers have found that when very overweight people, who [#permalink]

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11 Aug 2012, 11:07
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 [#permalink]

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11 Aug 2012, 11:26
(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. Tell us that Formerly overweight people will consume more calories and burn less due to lower metabolic rate. As a result they will again gain 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. Argument is not concerned with this category. So B is out of Scope
(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. Out of scope
(D) Researchers have not yet determined whether the metabolic rates of formerly very overweight individuals can be accelerated by means of chemical agents. Tricky choice but it has no bearing on the argument. If this option tells that artificially metabolism rate can not be accelerated, then it would have been a possible answer choice.
(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. Out of scope. We are not concerned abt this group.

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24 Aug 2012, 08:24
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 [#permalink]

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24 Aug 2012, 10:01
Meaning of the passage : very overweight people loose weight via dieting -> metabolism rate remains same -> new weight, old metabolism -> can't burn what they eat -> Finally go to their old weight

Assumption here is, even after reducing weight, they continue to consume as much calories as they used to. Option A states this assumption, and hence is right.
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Re: Researchers have found that when very overweight people [#permalink]

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27 Aug 2012, 03:47
I am not convinced over the reason why D is wrong.
The conclusion clearly states: Such newly thin persons will ultimately regain weight until their body size matches their metabolic rate.
If somehow a method is found to accelerate the metabolic rate, then we can't be sure of the conclusion to hold true.
Please let me know if I am missing something.
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Re: Researchers have found that when very overweight people, who [#permalink]

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06 Nov 2012, 09:25
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Here is a reason why (C) does not work.

(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.

Ask ourselves...does knowing the amount of calories burned in a day affect our argument that these dieters will actually REGAIN weight? We already know that dieters' calorie burn is LOWER than that of normal people for a given weight. If weight gain is determined by calorie INTAKE minus calorie burned, then the missing part to this equation is actually calorie INTAKE (or food eaten)...which is what (A) already addressed. Does (C) address calorie INTAKE?

Is (C) something the argument DEPENDS on? This is the "A vs Not A" Framework.

Does the following work:
A case)Amount of calories burned is DETERMINED by amount consumed (rather than individual's weight) => dieters will REGAIN weight
"Not A" case) Amount of calories burned is NOT DETERMINED by amount consumed (instead, determined by individual's weight) => dieters will NOT REGAIN weight

Well, in the opposite case which is where calories burned is determined by individual's weight...then the calorie burns will be equal between avg person and the dieter because now the dieter has lost weight and become the same weight as the average person. So the amount of calories burned will equal. Thus, dieteres will NOT REGAIN weight. However, this conflicts with information in the passage...that since dieters' natural metabolism is lower, the calorie burn is LOWER than the average person. Thus conflicting information. Dieters' calorie burn cannot be LOWER than the average person AND the SAME.

Then in the "A" case, calorie burn is determined by amount consumed. Well, the dieters consume less than the average person. What does that mean for calorie burn? We know consumption is LINKED to calorie burn, but we don't know the direction. Is it dieters consume less so then calorie burn is HIGHER? or is it that the calorie burn is LOWER?

So you can see, (C) has a number of problems when the "A vs Not A" framework is applied.
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Re: Researchers have found that when very overweight people, who [#permalink]

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05 Dec 2012, 18:21
I took me 3:26 to arrive at A by POE. Was deciding between A and C but then C is out because it's not the focus. Good question.
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Researchers have found that when very overweight people, who [#permalink]

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19 Dec 2012, 22:25
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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 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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