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  1. keannu's Avatar
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    #1

    Ecstasy causes brain damage : NA

    Evidence that MDMA causes long term cellular damage to the brain has, until recently, been based on experiments with animals alone; the most common method of detection is to cut out a section of the brain, and measure the level of the chemical serotonin. This is performed weeks or months after use of a suspect drug. If the serotonin level, which is lowered as a result of the use of many drugs, fails to return to normal, then it is probable that the drug in question has caused damage to the cells of that part of the brain. Ecstasy has been implicated in causing brain damage in this way, but in most cases the serotonin level returns to normal, albeit after a long time.

    Early experiments with monkeys, in which they were found to have permanent brain damage as a result of being administered MDMA, were used to link brain damage in humans to Ecstasy use. These early concerns led to the drug being classified as extremely dangerous, and although the results of the research were doubted by some and criticised as invalid, no attempt was made to change the classification. However, the latest available data regarding permanent brain damage in humans who have taken Ecstasy regularly over many years (as little as once a week for four years) seem to justify the cautious approach taken in the past.
    ==================================
    Classify the statements below as one of the following.
    A : an observation based on animal studies only
    NA : an observation based on non-animal studies
    U : an observation made by Ecstasy users

    38. Ecstasy causes brain damage : NA

    The answer for question 38 is NA. Considering both underlines, I think both animal studies and human studies have been done to prove it, but why is NA(non-animal studies) correct? Is the answer wrong?



  2. Tarheel's Avatar
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    #2

    Re: Ecstasy causes brain damage : NA

    Animal studies indicate that Ecstasy causes brain damage. People who have used Ecstasy over a long period of time have suffered brain damage. Ecstasy causes brain damage.

  3. keannu's Avatar
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    #3

    Re: Ecstasy causes brain damage : NA

    Why is it non animal studies?

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    #4

    Re: Ecstasy causes brain damage : NA

    Your only other option is "animal studies ONLY." That's clearly wrong.

  4. keannu's Avatar
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    #5

    Re: Ecstasy causes brain damage : NA

    I still wonder why the answer is "non-animal studies" when both non-animal(human) studies and animal studies have contributed to the conclusion.

  5. MikeNewYork's Avatar
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    #6

    Re: Ecstasy causes brain damage : NA

    I agree.

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