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Doctor: Some well-known figures in the medical community have begun to

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Doctor: Some well-known figures in the medical community have begun to [#permalink]

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New post 05 Jun 2018, 00:35
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Doctor: Some well-known figures in the medical community have begun to endorse large doses of vitamin supplements – especially folic acid – as part of treatment for diseases like ulcerative colitis. These doctors and television personalities claim that the vitamins can lessen the side effects of ulcerative colitis and lead to an overall improvement in the health of patients with ulcerative colitis. However, there is no evidence that the pure forms of vitamins found in supplements have any greater effect than those found in food. Patients with ulcerative colitis should instead spend their money on buying healthy foods like fruits and vegetables in order to get their vitamins.

Which of the following would most weaken the doctor’s argument?


A. Vitamins from supplements are less healthy because they often lack the micronutrients found in food that aid absorption

B. Vitamins do not necessarily cause harm when ingested following the instructions on the label.

C. Many people with ulcerative colitis cannot easily digest vitamin-rich foods due to damage to their digestive system and find it easier to get vitamins from supplements

D. The doctor evaluated the efficacy of different vitamins as part of a government-sponsored panel

E. Individuals with severe ulcerative colitis are often encouraged to consume fruit and vegetable juices alongside their supplements.

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Re: Doctor: Some well-known figures in the medical community have begun to [#permalink]

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New post 05 Jun 2018, 02:00
The answer is (C).

We can solve this question using the

Logical

approach, since this is all about figuring ou the structure of the argument.
The argument can be summarised thusly: since vitamins in food have the same effect as vitamins in supplements, it is better to spend money in food. However, this argument is based on several assumptions, all of which we could question if we want to weaken: it assumes food is cheaper - maybe it isn't? it assumes food has more or the same amount of vitamins - is that true? it assumes people with ulcerative colitis can access and eat foods with vitamins just as easily as supplements - (C) directly contradicts this: Many people with ulcerative colitis cannot easily digest vitamin-rich foods due to damage to their digestive system and find it easier to get vitamins from supplements

As always, the

Alternative

method of using the answers is also open to us:


A. Vitamins from supplements are less healthy because they often lack the micronutrients found in food that aid absorption strengthens, this means supplements are bad

B. Vitamins do not necessarily cause harm when ingested following the instructions on the label. strengthens - more good news about supplements

C. Many people with ulcerative colitis cannot easily digest vitamin-rich foods due to damage to their digestive system and find it easier to get vitamins from supplements
weakens - this is a reason why people with UC should want to use supplements rather than food
D. The doctor evaluated the efficacy of different vitamins as part of a government-sponsored panel strengthens

E. Individuals with severe ulcerative colitis are often encouraged to consume fruit and vegetable juices alongside their supplements. doesn't weaken, because this is ALONG with and not INSTEAD of supplements
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Re: Doctor: Some well-known figures in the medical community have begun to [#permalink]

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New post 05 Jun 2018, 10:11
It should be C.
If people with ulcerative colitis can’t digest vitamin-rich foods, then they can’t get the same benefit from the food as other people do. Therefore, the doctor’s argument breaks down - if vitamin-rich foods and vitamin supplements have the same efficacy but a patient can take vitamins but not foods, then the supplements are more effective in that situation.
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Re: Doctor: Some well-known figures in the medical community have begun to [#permalink]

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New post 10 Jun 2018, 04:00
Bunuel wrote:
Doctor: Some well-known figures in the medical community have begun to endorse large doses of vitamin supplements – especially folic acid – as part of treatment for diseases like ulcerative colitis. These doctors and television personalities claim that the vitamins can lessen the side effects of ulcerative colitis and lead to an overall improvement in the health of patients with ulcerative colitis. However, there is no evidence that the pure forms of vitamins found in supplements have any greater effect than those found in food. Patients with ulcerative colitis should instead spend their money on buying healthy foods like fruits and vegetables in order to get their vitamins.

Which of the following would most weaken the doctor’s argument?


A. Vitamins from supplements are less healthy because they often lack the micronutrients found in food that aid absorption

B. Vitamins do not necessarily cause harm when ingested following the instructions on the label.

C. Many people with ulcerative colitis cannot easily digest vitamin-rich foods due to damage to their digestive system and find it easier to get vitamins from supplements

D. The doctor evaluated the efficacy of different vitamins as part of a government-sponsored panel

E. Individuals with severe ulcerative colitis are often encouraged to consume fruit and vegetable juices alongside their supplements.


VERITAS PREP OFFICIAL SOLUTION:




For any strengthen or weaken question, your job is to find the gap in the logic and either exploit it (in the case of a weaken question) or shore it up (in the case of a strengthen question). Here you are told that some people in the medical community encourage patients to take large doses of vitamin supplements to treat ulcerative colitis. The doctor making this argument claims that the health benefits are no better than the health benefits of getting vitamins through food, so patients with ulcerative colitis should spend their money on food instead of supplements.

The gap here is that ulcerative colitis patients need to eat the food in order to get the vitamins. What if they can’t as a side effect of their disease or can’t afford to buy the foods necessary? Anything that would prevent a patient with ulcerative colitis from getting the nutrients they need from food would exploit this fact.

Choice (A) actually strengthens the doctors argument rather than weakening it. If the supplements were missing important micrnutrients that food has, that would lend support to the idea that it’s better to just get your vitamins through food.

Choice (B) neither strengthens nor weakens the argument given. Even if vitamin supplements aren’t harmful, that doesn’t support whether they are better or worse than vitamins ingested through food.

Choice (C) is correct. If people with ulcerative colitis can’t digest vitamin-rich foods, then they can’t get the same benefit from the food as other people do. Therefore, the doctor’s argument breaks down - if vitamin rich foods and vitamin supplements have the same efficacy but a patient can take vitamins but not foods, then the supplements are more effective in that situation.

Choice (D) simply establishes the doctor as an expert on vitamin research, which does not weaken his argument.

Choice (E) simply gives additional information about ulcerative colitis treatment unrelated to the debate between eating food and taking vitamin supplements.

The correct answer is (C).
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New to the Math Forum?
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Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

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Re: Doctor: Some well-known figures in the medical community have begun to [#permalink]

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New post 14 Jun 2018, 05:46
Conclusion: Patients with ulcerative colitis should instead spend their money on buying healthy foods like fruits and vegetables in order to get their vitamins rather than vitamin supplements.

Assumption: Vitamin supplements cannot be of healthy use to these patients.

To prove: Vitamin supplements are of use to patients.

A. Vitamins from supplements are less healthy because they often lack the micronutrients found in food that aid absorption.
This is an opposite of what we want to prove.

B. Vitamins do not necessarily cause harm when ingested following the instructions on the label.
It says Vitamins do not cause harm but does not comment on fruits and vegetables. Out of focus.

C. Many people with ulcerative colitis cannot easily digest vitamin-rich foods due to damage to their digestive system and find it easier to get vitamins from supplements.
This option shows that Vitamin supplements are useful to many people and weakens the conclusion that people should consume foods.
This is the correct answer.


D. The doctor evaluated the efficacy of different vitamins as part of a government-sponsored panel.
Out of focus

E. Individuals with severe ulcerative colitis are often encouraged to consume fruit and vegetable juices alongside their supplements.
This is neutral and does not weaken the conclusion.
Re: Doctor: Some well-known figures in the medical community have begun to   [#permalink] 14 Jun 2018, 05:46
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