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Although migraine headaches are believed to be caused by food allergie

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Although migraine headaches are believed to be caused by food allergie [#permalink]

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Although migraine headaches are believed to be caused by food allergies, putting patients on diets that eliminate those foods to which the patients have been demonstrated to have allergic migraine reactions frequently does not stop headaches. Obviously, some other cause of migraine headaches besides food allergies must exist.

Which of the following, if true, would most weaken the conclusion above?

A. Many common foods elicit an allergic response only after several days, making it very difficult to observe links between specific foods patients eat and headaches they develop.
B. Food allergies affect many people who never develop the symptom of migraine headaches.
C. Many patients report that the foods that cause them migraine headaches are among the foods that they most enjoy eating.
D. Very few patients have allergic migraine reactions as children and then live migraine-free adult lives once they have eliminated from their diets foods to which they have been demonstrated to be allergic.
E. Very rarely do food allergies cause patients to suffer a symptom more severe than that of migraine headaches.
[Reveal] Spoiler: OA

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Re: Although migraine headaches are believed to be caused by food allergie [#permalink]

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Although migraine headaches are believed to be caused by food allergies, putting patients on diets that eliminate those foods to which the patients have been demonstrated to have allergic migraine reactions frequently does not stop headaches. Obviously, some other cause of migraine headaches besides food allergies must exist.
Which of the following, if true, would most weaken the conclusion above?


A. Many common foods elicit an allergic response only after several days, making it very difficult to observe links between specific foods patients eat and headaches they develop.

B. Food allergies affect many people who never develop the symptom of migraine headaches.

C. Many patients report that the foods that cause them migraine headaches are among the foods that they most enjoy eating.

D. Very few patients have allergic migraine reactions as children and then live migraine-free adult lives once they have eliminated from their diets foods to which they have been demonstrated to be allergic.

E. Very rarely do food allergies cause patients to suffer a symptom more severe than that of migraine headaches.


If it is difficult to determine which foods cause migraines, then some foods that cause allergic reactions might not have been demonstrated to do so. Hence, if choice A is true, eliminating foods that have been demonstrated to cause migraines might not eliminate migraines, even if food allergies are the only cause of migraines. Choice A is the best answer.

Neither the fact that some food allergies do not result in migraines (choice B), nor the fact that few allergies result in symptoms more severe than migraines (choice E), explains why restricting one’s diet does not stop migraines. Choice C suggests that migraine sufferers do not naturally avoid the foods at issue. Choice D reiterates the information that eliminating certain foods does not usually solve the problem.
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Re: Although migraine headaches are believed to be caused by food allergie [#permalink]

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New post 13 Sep 2014, 12:38
Pretty straight

For a low mid level student the question is a bit wordy: in particular D is being temptive

But for an advanced student is fairly easy. As it turns out, this question demonstrates how OG is NOT what is a real upper level question during the exam.

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Re: Although migraine headaches are believed to be caused by food allergie [#permalink]

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Although migraine headaches are believed to be caused by food allergies, putting patients on diets that eliminate those foods to which the patients have been demonstrated to have allergic migraine reactions frequently does not stop headaches. Obviously, some other cause of migraine headaches besides food allergies must exist.

Which of the following, if true, would most weaken the conclusion above?

A.Many common foods elicit an allergic response only after several days, making it very difficult to observe links between specific foods patients eat and headaches they develop.

B.Food allergies affect many people who never develop the symptom of migraine headaches

C.Many patients report that the foods that cause them migraine headaches are among the foods that they most enjoy eating.

D.Very few patients have allergic migraine reactions as children and then live migraine-free adult lives once they have eliminated from their diets foods to which they have been demonstrated to be allergic.

E.Very rarely do food allergies cause patients to suffer a symptom more severe than that of migraine headaches.

Can anyone explain me why 'C' is incorrect? I do find the same topic that had been discussed few years back, but couldn't explore why 'C' is incorrect as the contest was b/w A and D. I got to know why A is correct, but couldn't get the reasoning for why we should make it C as wrong.

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Re: Although migraine headaches are believed to be caused by food allergie [#permalink]

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New post 14 Apr 2015, 20:11
Hi Parekhm,

Conslusion is ' some other cause of migraine headaches besides food allergies must exist.'

Option C:Many patients report that the foods that cause them migraine headaches are among the foods that they most enjoy eating.

As per the option 'C', it does imply that the food they(many patients) most enjoy eating does cause the migraine, and it means there is no other cause of migraine headaches. Eventually, this statement weakens the conclusion that some other cause of migraine headaches besides food allergies must exists. Please correct me if my understanding is incorrect.

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Re: Although migraine headaches are believed to be caused by food allergie [#permalink]

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Official GMAT Practice Question - Although migraine headaches.. [#permalink]

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Although migraine headaches are believed to be caused by food allergies, putting patients on diets that eliminate those foods to which the patients have been demonstrated to have allergic migraine reactions frequently does not stop headaches. Obviously, some other cause of migraine headaches besides food allergies must exist.

Which of the following, if true, would most weaken the conclusion above?


A. Many common foods elicit an allergic response only after several days, making it very difficult to observe links between specific foods patients eat and headaches they develop.

B. Food allergies affect many people who never develop the symptom of migraine headaches.

C. Many patients report that the foods that cause them migraine headaches are among the foods that they most enjoy eating.

D. Very few patients have allergic migraine reactions as children and then live migraine-free adult lives once they have eliminated from their diets foods to which they have been demonstrated to be allergic.

E. Very rarely do food allergies cause patients to suffer a symptom more severe than that of migraine headaches.

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Re: Official GMAT Practice Question - Although migraine headaches.. [#permalink]

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New post 25 Apr 2017, 06:26
gaurav0806 wrote:
Although migraine headaches are believed to be caused by food allergies, putting patients on diets that eliminate those foods to which the patients have been demonstrated to have allergic migraine reactions frequently does not stop headaches. Obviously, some other cause of migraine headaches besides food allergies must exist.

Which of the following, if true, would most weaken the conclusion above?


A. Many common foods elicit an allergic response only after several days, making it very difficult to observe links between specific foods patients eat and headaches they develop.

B. Food allergies affect many people who never develop the symptom of migraine headaches.

C. Many patients report that the foods that cause them migraine headaches are among the foods that they most enjoy eating.

D. Very few patients have allergic migraine reactions as children and then live migraine-free adult lives once they have eliminated from their diets foods to which they have been demonstrated to be allergic.

E. Very rarely do food allergies cause patients to suffer a symptom more severe than that of migraine headaches.


Only (A) weakens the conclusion.It could be that people can easily overlook the actual culprit foods that cause the migraine headache

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Official GMAT Practice Question - Although migraine headaches.. [#permalink]

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New post 25 Apr 2017, 21:46
As per the conclusion "some other cause of migraine headaches besides food allergies must exist." We can attack to the conclusion to prove that only the food allergy is the cause of the migraine headaches.

A. Many common foods elicit an allergic response only after several days, making it very difficult to observe links between specific foods patients eat and headaches they develop. [ Correct.] Food is the actual cause and no information which food is allergic

B. Food allergies affect many people who never develop the symptom of migraine headaches.[Not sure food is the cause] Incorrect.

C. Many patients report that the foods that cause them migraine headaches are among the foods that they most enjoy eating.[ Patients found the allergic foods, so they can eliminate from their diet] Incorrect.

D. Very few patients have allergic migraine reactions as children and then live migraine-free adult lives once they have eliminated from their diets foods to which they have been demonstrated to be allergic.[Same as C]

E. Very rarely do food allergies cause patients to suffer a symptom more severe than that of migraine headaches.[Some other cause] Supporting the conclusion.

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Re: Official GMAT Practice Question - Although migraine headaches.. [#permalink]

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New post 30 May 2017, 05:48
gaurav0806 wrote:
Although migraine headaches are believed to be caused by food allergies, putting patients on diets that eliminate those foods to which the patients have been demonstrated to have allergic migraine reactions frequently does not stop headaches. Obviously, some other cause of migraine headaches besides food allergies must exist.

Which of the following, if true, would most weaken the conclusion above?


A. Many common foods elicit an allergic response only after several days, making it very difficult to observe links between specific foods patients eat and headaches they develop.

B. Food allergies affect many people who never develop the symptom of migraine headaches.

C. Many patients report that the foods that cause them migraine headaches are among the foods that they most enjoy eating.

D. Very few patients have allergic migraine reactions as children and then live migraine-free adult lives once they have eliminated from their diets foods to which they have been demonstrated to be allergic.

E. Very rarely do food allergies cause patients to suffer a symptom more severe than that of migraine headaches.




If it is difficult to determine which foods cause migraines, then some foods that cause allergic reactions might not have been demonstrated to do so. Hence, if choice A is true, eliminating foods that have been demonstrated to cause migraines might not eliminate migraines, even if food allergies are the only cause of migraines. Choice A is the best answer.
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Re: Although migraine headaches are believed to be caused by food allergie [#permalink]

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New post 28 Jul 2017, 05:19
this is a very common pattern in gmat, test takers should learn this. That is, the effect of something only occurs does not occur immediately at a time, or at a place.

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Re: Although migraine headaches are believed to be caused by food allergie [#permalink]

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New post 28 Jul 2017, 09:17
Merged topics. Please, search before posting questions!
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Re: Although migraine headaches are believed to be caused by food allergie [#permalink]

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gaurav0806 wrote:
Although migraine headaches are believed to be caused by food allergies, putting patients on diets that eliminate those foods to which the patients have been demonstrated to have allergic migraine reactions frequently does not stop headaches. Obviously, some other cause of migraine headaches besides food allergies must exist.

Which of the following, if true, would most weaken the conclusion above?


A. Many common foods elicit an allergic response only after several days, making it very difficult to observe links between specific foods patients eat and headaches they develop.

B. Food allergies affect many people who never develop the symptom of migraine headaches.

C. Many patients report that the foods that cause them migraine headaches are among the foods that they most enjoy eating.

D. Very few patients have allergic migraine reactions as children and then live migraine-free adult lives once they have eliminated from their diets foods to which they have been demonstrated to be allergic.

E. Very rarely do food allergies cause patients to suffer a symptom more severe than that of migraine headaches.




.It could be that people can easily overlook the actual culprit foods that cause the migraine headache

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Re: Although migraine headaches are believed to be caused by food allergie [#permalink]

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Samshrimali wrote:
As per the conclusion "some other cause of migraine headaches besides food allergies must exist." We can attack to the conclusion to prove that only the food allergy is the cause of the migraine headaches.

A. Many common foods elicit an allergic response only after several days, making it very difficult to observe links between specific foods patients eat and headaches they develop. [ Correct.] Food is the actual cause and no information which food is allergic

B. Food allergies affect many people who never develop the symptom of migraine headaches.[Not sure food is the cause] Incorrect.

C. Many patients report that the foods that cause them migraine headaches are among the foods that they most enjoy eating.[ Patients found the allergic foods, so they can eliminate from their diet] Incorrect.

D. Very few patients have allergic migraine reactions as children and then live migraine-free adult lives once they have eliminated from their diets foods to which they have been demonstrated to be allergic.[Same as C]

E. Very rarely do food allergies cause patients to suffer a symptom more severe than that of migraine headaches.[Some other cause] Supporting the conclusion.


.It could be that people can easily overlook the actual culprit foods that cause the migraine headache . Hence A

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Re: Although migraine headaches are believed to be caused by food allergie [#permalink]

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gaurav0806 wrote:
Although migraine headaches are believed to be caused by food allergies, putting patients on diets that eliminate those foods to which the patients have been demonstrated to have allergic migraine reactions frequently does not stop headaches. Obviously, some other cause of migraine headaches besides food allergies must exist.

Which of the following, if true, would most weaken the conclusion above?


A. Many common foods elicit an allergic response only after several days, making it very difficult to observe links between specific foods patients eat and headaches they develop.

B. Food allergies affect many people who never develop the symptom of migraine headaches.

C. Many patients report that the foods that cause them migraine headaches are among the foods that they most enjoy eating.

D. Very few patients have allergic migraine reactions as children and then live migraine-free adult lives once they have eliminated from their diets foods to which they have been demonstrated to be allergic.

E. Very rarely do food allergies cause patients to suffer a symptom more severe than that of migraine headaches.


It could be that people can easily overlook the actual culprit foods that cause the migraine headache. Hence A

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Re: Although migraine headaches are believed to be caused by food allergie [#permalink]

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New post 13 Sep 2017, 05:10
SivaKumarP wrote:
Although migraine headaches are believed to be caused by food allergies, putting patients on diets that eliminate those foods to which the patients have been demonstrated to have allergic migraine reactions frequently does not stop headaches. Obviously, some other cause of migraine headaches besides food allergies must exist.

Which of the following, if true, would most weaken the conclusion above?

A.Many common foods elicit an allergic response only after several days, making it very difficult to observe links between specific foods patients eat and headaches they develop.

B.Food allergies affect many people who never develop the symptom of migraine headaches

C.Many patients report that the foods that cause them migraine headaches are among the foods that they most enjoy eating.

D.Very few patients have allergic migraine reactions as children and then live migraine-free adult lives once they have eliminated from their diets foods to which they have been demonstrated to be allergic.

E.Very rarely do food allergies cause patients to suffer a symptom more severe than that of migraine headaches.

Can anyone explain me why 'C' is incorrect? I do find the same topic that had been discussed few years back, but couldn't explore why 'C' is incorrect as the contest was b/w A and D. I got to know why A is correct, but couldn't get the reasoning for why we should make it C as wrong.

In C answer, comparison is drawn against children and adult migraine which is not described in the questions.

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Re: Although migraine headaches are believed to be caused by food allergie [#permalink]

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New post 18 Sep 2017, 09:56
now, I understand that studying the wrong options means studying how the pattern can be right + the common trap in gmat.

The key issue is most of the wrong options are stupid and have little values -> only the right answer is what test takers must learn.
Nevertheless, wrong options in one question can be the right answer in another question, or the wrong options contain a common trap.

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Re: Although migraine headaches are believed to be caused by food allergie   [#permalink] 18 Sep 2017, 09:56
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