Ecstasy/MDMA attributed problems reported by novice, moderate and heavy recreational users
Human Psychopharmacology Clinical and Experimental July 12, 2002 A. C. Parrott, Tom Buchanan, Andrew Scholey et al. 163 citations
Depression, memory problems, anxiety, mood fluctuation, poor concentration, infections, tremors/twitches, and weight loss are all more common among people who have used Ecstasy more often. In a survey of 282 Ecstasy users, memory problems attributed to the drug were reported by 19% of novice users (1–9 occasions), 52% of moderate users (10–99 occasions), and 73% of heavy users (100+ occasions). The incidence of psychobiological problems attributed to Ecstasy use increases directly with the number of times it has been used.