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In a recent study, sedentary middle-aged women who drank

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In a recent study, sedentary middle-aged women who drank [#permalink] New post 27 Oct 2010, 02:14
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55% (02:39) correct 45% (01:32) wrong based on 20 sessions
In a recent study, sedentary middle-aged women who drank more than two cups of caffeinated tea a day were found more likely than other middle-aged women to have a high blood level of cholesterol, which is a factor increasing the risk of heart disease. Cholesterol can reach the blood from food and drink but is not contained in tea.

Which of the following, if true, most seriously weakness a conclusion from the study that for sedentary middle-aged women tea increases the risk of heart attack?

(A) A sedentary style of life increases levels of cholesterol in the blood.
(B) Tea contains caffeine, which acts as a stimulant that increases heart rate.
(C) The women studied drank their tea without milk or cream, which contain cholesterol.
(D) In both groups, the women were likely to be over-weight, and excess weight is a factor that increases the risk of heart disease.
(E) The women who drank more than two cups of tea a day also at more foods high in cholesterol.
[Reveal] Spoiler: OA
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Re: risk of heart disease [#permalink] New post 27 Oct 2010, 20:14
we have to prove that its not tea that increases the risk of heart attack...


(A) A sedentary style of life increases levels of cholesterol in the blood. there is no mention of tea and even if sedentary style of life increases heart attach risk, so can tea
(B) Tea contains caffeine, which acts as a stimulant that increases heart rate.
even if it acts as a stimulant, maybe it increases the risk of heart attack even more, negating the benefits
(C) The women studied drank their tea without milk or cream, which contain cholesterol.
even if milk or cream were absent, it does not give an alternative to why tea should not cause heart attack
(D) In both groups, the women were likely to be over-weight, and excess weight is a factor that increases the risk of heart disease.
totally off track
(E) The women who drank more than two cups of tea a day also at more foods high
in cholesterol.
this properly correlates that Tea does not directly increase the risk of attack but people who consume more than two cups are at a risk because they eat additional things along with the tea which increases the risk
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Re: risk of heart disease [#permalink] New post 29 Oct 2010, 06:59
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Re: risk of heart disease   [#permalink] 29 Oct 2010, 06:59
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