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Calorie restriction, a diet high in nutrients but low in cal

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Calorie restriction, a diet high in nutrients but low in cal [#permalink] New post 13 Jul 2018, 11:11
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Calorie restriction, a diet high in nutrients but low in calories, is known to prolong the life of rats and mice by preventing heart disease, cancer, diabetes, and other diseases. A 6-month study of 48 moderately overweight people, who each reduced their calorie intake by at least 25%, demonstrated decreases in insulin levels and body temperature, with the greatest decrease observed in individuals with the greatest percentage change in their calorie intake. Low insulin level and body temperature are both considered signs of longevity, partly because an earlier study by other researchers found both traits in long-lived people.

If the above statements are true, they support which of the following inferences?

(A) Calorie restriction produces similar results in humans as it does in rats and mice.
(B) Humans who reduce their calorie intake by at least 25% on a long-term basis will live longer than they would have had they not done so.
(C) Calorie intake is directly correlated to insulin level in moderately overweight individuals.
(D) Individuals with low insulin levels are healthier than individuals with high insulin levels.
(E) Some individuals in the study reduced their calorie intake by more than 25%.
[Reveal] Spoiler: OA

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Re: Calorie restriction, a diet high in nutrients but low in cal [#permalink] New post 27 Aug 2018, 18:35
How is (E) the answer for this question? I chose "(D) Individuals with low insulin levels are healthier than individuals with high insulin levels." as the last two lines of the paragraph imply that there is a correlation between low insulin level and longevity. So,one can take it as individuals with low insulin levels are healthier than individuals with high insulin levels.

Please explain this.
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Re: Calorie restriction, a diet high in nutrients but low in cal [#permalink] New post 29 Aug 2018, 10:50
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Low level of insulin is a sign of

Low insulin level and body temperature are both considered [b]signs of longevity, [/b]

Signs of longevity does not necessarily mean healthier. There is no relation between the two as we know and most important is not stated in the passage.

D says that some people reduced their calories intake

The passage says

A 6-month study of 48 moderately overweight people,

which is inferred in E.

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Re: Calorie restriction, a diet high in nutrients but low in cal [#permalink] New post 30 Oct 2018, 10:37
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I also chose D, but in fact the passage doesn't say anything about health. The only one that's supported by the passage is

(E) Some individuals in the study reduced their calorie intake by more than 25%.

It's the only one you can actually defend from the text, with the following sentence:

A 6-month study of 48 moderately overweight people, who each reduced their calorie intake BY AT LEAST 25%, demonstrated decreases in insulin levels and body temperature, with the greatest decrease observed in individuals with the greatest percentage change in their calorie intake.

I find that I get frustrated because I tend to overlook small, but important details in the passage, stem or answer choices. I'm working on paying attention to those details when trying to decide my answer.
Re: Calorie restriction, a diet high in nutrients but low in cal   [#permalink] 30 Oct 2018, 10:37
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