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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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24 Aug 2012, 11:01
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, 04:47
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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05 Dec 2012, 19:21
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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Re: Researchers have found that [#permalink]

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20 Dec 2012, 00:18
skamal7 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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ALSO CAN SOMEONE EXPLAIN WHATS THE PROBLEM IN B

Conclusion: Newly thin persons will ultimately regain weight until their body size again matches their metabolic rate.

This is a find assumption question. The best way to approach it is to negate the assumption to see if the conclusion is negated or not.

(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.

NOT (A) Almost all 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 that be the case, then the newly thin people, who fewer calories will not gain weight even if their metabolism is low. This negates the conclusion. Hence this is the correct choice.

(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.

NOT (B) The metabolisms of people who are usually not overweight are much more stable than the metabolisms of people who have been very overweight.

This has no bearing on the conclusion. It only means that over weight people can have varying metabolism compared to the others.

The other choices are fairly straight forward. We don't even need to negate them to check. They are all out of context choices.

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Re: Researchers have found that [#permalink]

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20 Dec 2012, 07:39
Hey
Conclusion: Newly thin person will regain the weight that they had losed.
Premise 1; They have lost weight by doing dieting, and they have low metabolism rate.
Premise 2: They will burn fewer calories at their newer weight.
Premise 3 : Metabolism reamins constant.

Prethinking
possible assumptions:
1. They start eating too mcuch; they give up dieting after attaining a desired weight.

Option A 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 there are many newly thin persons who tend to eat more. This is it ...Option A

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

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15 Jan 2013, 12:28
ajit257 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 some explain how to tackle assumption efficiently...thanks

In my humble opinion spend some time on the premise instead of jumping on to the answers. The premise is saying that 'since the metabolism of the overweight people is less than the normal people at that weight, the overweight people who have reduced their weight by dieting will eventually gain the weight'. If you just think about this then only possibility which can make the premise true is if the people who reduced their weight eat the equivalent calories that the normal people at that weight eat. since overwieght people already have low metabolism, they will not burn much and store as fat.
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Re: Researchers have found that when very overweight people [#permalink]

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15 Jan 2013, 14:34
VeritasPrepKarishma wrote:
ajit257 wrote:
thanks Amit ...I realized my mistake that i am overlooking the fact that assumtion is closely tied to conclusion ...awesome explanation.

Amit has pretty much covered all the ground. Let me just add here that an assumption is a missing premise that is necessary for the conclusion to be true. The assumption has to be true for the conclusion to be true. Hence if you are lost between 2-3 choices, negate each choice. Once you negate an option, if your conclusion can still be true, it means the option is not an assumption. It is a very useful trick.

would you please explain a little bit more on how negation works and how useful it is when tackling questions like these..thanks

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11 May 2013, 22:53
All duplicate threads on this topic have been merged.

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

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13 Jul 2013, 00:36
Really tricky question! Is this level 700?
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Re: Researchers have found that when very overweight people, who [#permalink]

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02 Mar 2014, 14:19
can anyone explain this part:
Quote:
They will thus burn significantly fewer calories at the new weight than do people whose weight is normally at that level.

I don't quite understand why "thus" fits in there.
Thanks,
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Re: Researchers have found that when very overweight people, who [#permalink]

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05 Oct 2014, 06:27
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.

Because when they do not consume less.. they again go back to the same weight
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Re: Researchers have found that when very overweight people, who [#permalink]

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26 Oct 2014, 01:28
Taku wrote:
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.

IMO A !!

Author Conclusion is : People who shade their weight, ultimately regain weight until their body size again matches their metabolic rate

Author cited that theory of calorie burning in these people, where he assumes that these people will continue to consume as much calories as they used to in past, or we can say these people will not reduce their calorie consumption & hence they will ultimately gain weight in long run.

Rest all does not fit in question stem & conclusion.

Just not happy bcoz took 3.14 mins !!

Regards
LS
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Researchers have found that when very overweight people, who [#permalink]

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14 Jun 2015, 11:42
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?

Premise 1: Overweight people dieted down to a new weight. This weight lose is because of "dieting". (They have come down from W1 to W2)
Premise 2: Since they will burn more calories than people who are already at less weight (W2).
Conclusion: they will gain weight and go back to previous weight (W1)

Prethinking : Any other reason which doesn't avoid or prevent the weight gain should be the assumption.

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.
Since the overweight people have high metabolism rate than the people at the lower weight so if they eat less food, the metabolism rate can be controlled and they can stay at the lower weight -> which breaks the argument
hence correct.

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.
as per premise the metabolism is lower than metabolism of the over weight people and weather they can vary or not is out of scope of the argument

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.
Suppose lets say, this option is premise. Then how do you know if "amount that is consumed" is less enough to decrease the metabolism rate or still more to continue the same metabolism rate.

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

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.
Completely out of scope
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Researchers have found that when very overweight people, who [#permalink]

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17 Jun 2015, 13:10
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?

The conclusion is that overweight people who lose weight will regain it because their metabolism remains as low as it was prior to the weight loss.

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 formerly overweight people didn't maintain a low calorie diet, this would cause them to regain the weight, too.
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. We're concerned with 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. The passage suggests that weight, and not food consumption determines calorie burn.
D: Reseachers have not yet determined whether the metabolic rates of formerly very overweight individuals can be accelerated by means of chemical agents. Chemical agents are out of scope.
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. People who are at their usual weight are out of scope.
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Re: Researchers have found that when very overweight people, who [#permalink]

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

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25 Jul 2016, 06:19
A supports the argument by saying that most of the people will regain weight as per their metabolic rates.(this is what the argument says)

Option A clearly supports the argument , which is necessary for the argument to be true.

if u negate this , most people with new weight stay with their new weight , the argument doesn't hold true.

hope this helps.
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Re: Researchers have found that when very overweight people, who [#permalink]

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02 Aug 2016, 14:38
overweight people say 90 kg- low metabolic rate (low calorie burning), and it remains UNCHANGED
they reduced their calorie consumption- let's say burning(metabolic rate)- 1500 cal per day consumption reduced from 2300 calorie to 1400 calorie per day,
so they started loosing weight as burning rate more than consumption rate

now normal weight person- say 70 kg, has better burning rate - 2300 calorie and he consumes 2300 calorie, so no weight gain

now this newly thin person (from 90 to 70 kg) still has the same burning rate 1500 cal, as in the premise it is given that it doesn't change.

so if this newly person goes back to same previous diet of 2300 cal- not the dieting diet of 1500 cal, he will start gaining the weight

so the assumption is that- very few over weight people stick to their reduced diet and they get back to the old habits of consuming the same diet - 2300

considering this pls evaluate all the choice and choice A matches with the assumption
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Re: Researchers have found that when very overweight people, who [#permalink]

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04 Aug 2016, 01:20
Quote:
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.

Quote:

Hello Experts:
Can you please provide a detailed explanation on why A is the answer?
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Re: Researchers have found that when very overweight people, who [#permalink]

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13 Sep 2016, 22:01
How do we negate answer choice A.Can the negation technique be applied here
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Re: Researchers have found that when very overweight people, who [#permalink]

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24 Sep 2016, 07:22
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.
Negation test - A lot of very overweight people will continue to consume very low calorie food .
If a sizable proportion of such people do so , they won't gain weight . This breaks the assumption

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Re: Researchers have found that when very overweight people, who   [#permalink] 24 Sep 2016, 07:22

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