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A long-term health study that followed a group of people who

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A long-term health study that followed a group of people who [#permalink] New post 14 Aug 2004, 01:22
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22. A long-term health study that followed a group of people who were age 35 in 1950 found that those whose weight increased by approximately half a kilogram or one pound per year after the age of 35 tended, on the whole, to live longer than those who maintained the weight they had at age 35. This finding seems at variance with other studies that have associated weight gain with a host of health problems that tend to lower life expectancy.

Which one of the following, if true, most helps to resolve the apparently conflicting findings?

(A) As people age, muscle and bone tissue tends to make up a smaller and smaller proportion of total body weight.

(B) Individuals who reduce their cholesterol levels by losing weight can thereby also reduce their risk of dying from heart attacks or strokes.

(C) Smokers, who tend to be leaner than nonsmokers, tend to have shorter life spans than nonsmokers.

(D) The normal deterioration of the human immune system with age can be slowed down by a reduction in the number of calories consumed.

(E) Diets that tend to lead to weight gain often contain not only excess fat but also unhealthful concentrations of sugar and sodium.
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 [#permalink] New post 14 Aug 2004, 01:30
What Question :shock: . A by POE
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 [#permalink] New post 14 Aug 2004, 03:15
Once more really good question........

I was doing OG CRs and thinking I am doing pretty good since I was getting majority of them right......Srijay...these questions u are posting are really good exercise for the brain......

Can you share the source of these questions?

as far as this question is concerned...I couldnt come down to any specific answer......

Bigtooth...can you explain why it should be A... since A just says" As people age, muscle and bone tissue tends to make up a smaller and smaller proportion of total body weight."....so this can happen in either of the two ways....body weight remains constant and weight of muscle and bone tissue reduces or the weight of these 2 remains constant but the overall body weight increases..(may be due to excess fat !)

still somehow I cant logically connect the opposite views of the argument...

Srijay...whats the official answer......
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 [#permalink] New post 14 Aug 2004, 09:07
1.5 min. A is best
A) if proportion of muscle decreased vis-a-vis that of total bodyweight then this is the only explanation as to how gaining would keep that "healthy" weight. This will resolve the paradox as to why people who maintain their weight actually die earlier.
B) directly contradicts the stem
C) This introduces a third variable: smoking. Weight gain may have nothing to do with the health level
D) directly contradicts the stem
E) directly contradicts the stem
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 [#permalink] New post 14 Aug 2004, 10:05
A seems to be the closest bet. Still, as Paul explains, A supports the first premise ' increase in weight is good' but how does it explain the contradiction.. ?
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 [#permalink] New post 14 Aug 2004, 15:27
C does introduce a new variable, but the variable (if applicable) supports the findings. I fail to see how A resolves the discrepency. I'll pick C.
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 [#permalink] New post 14 Aug 2004, 16:25
I don't see how A is correct. As people age, they gain more weight, as a result of which, their existing bone and muscle mass loses its value as a percent of a whole. How does it help us explain that it is good to gain a pound a year?

C introduces smokers, whose bodies are leaner and who tend to die younger than non-smokers. By gaining weight, these people may make up the weight they lose due to smoking.

Wouldn't hang my hat on this argument, but I go with it nevertheless.
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 [#permalink] New post 14 Aug 2004, 20:59
Nice explanation lastochka
OA is C
I think most of us got confused by intro of a third variable
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 [#permalink] New post 14 Aug 2004, 21:00
crackgmat04 wrote:
Can you share the source of these questions?


The Q is from LSAT prep material
My friend is preparing for LSAT and he shoots me Qs he's unable to solve ... and when I'm unable to solve I shoot them to GMATCLUB :wink:
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 [#permalink] New post 14 Aug 2004, 21:03
I think the source of the Qs I am posting these days is from this book:
http://www.amazon.com/exec/obidos/tg/de ... s&n=507846
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 [#permalink] New post 25 Aug 2004, 02:54
C

A and C are contenders but A brings up an issue of what body weight is composed of. The stem doesn't address this issues at all
  [#permalink] 25 Aug 2004, 02:54
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