FACT: It is undeniable that if you take Ecstasy, you are risking memory impairment.
While the degree of memory impairment, so far measured, is still within limits considered "normal", there is a growing body of evidence to suggest that even moderate use messes with your head. Whether it does so temporarily or permanently is yet unknown.
There will be more, better-designed studies over the next few years that will help you understand the issues clearly. For now, refer to the original studies quoted if you can. Use reputable sources on the Internet to find out facts.
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