Pubdate: Fri, 14 Dec 2001
Source: Sydney Morning Herald (Australia)
Copyright: 2001 The Sydney Morning Herald
Contact:  http://www.smh.com.au/
Details: http://www.mapinc.org/media/441
Author: Karen Ingram
Bookmark: http://www.mapinc.org/mdma.htm (Ecstasy)

ECSTASY NOW COULD MEAN FORGETTING WHY LATER

The party drug ecstasy can impair memory even when taken infrequently, a 
study of Australian users has confirmed.

It adds to overseas evidence about memory impairment.

Researcher Jeff Ward gave memory questionnaires to 30 ecstasy users, 
similar to those undertaken by sufferers of dementia and Alzheimer's disease.

He gave the same questions to a control group who had never taken the drug 
- - and the users performed worse.

"Given enough [attempts], users can learn the same things as non-users, but 
it takes them longer to learn," said Dr Ward, of the Australian National 
University's School of Psychology.

He said it seemed the impairment occurred when information was received or 
encoded by the brain, rather than affecting memory retention or retrieval.

Previous studies have shown ecstasy affects the serotonin system of nerves 
in the brain, causing hyperstimulation.

Dr Ward said the test results could not be attributed to other factors such 
as differences in IQ or exposure to other drugs.

"The memory problem has been identified in perhaps a dozen studies in the 
US and Europe and has found a typical pattern of lower performance on 
memory tests," he said.

Dr Ward said his subjects had "used the drug quite a bit in their 
lifetimes, from 10 times to hundreds of times" but the study was unable to 
explain how their brain function was impaired.

A second ANU study has found that young adults who smoke, drink or use 
marijuana are prone to higher rates of depression and anxiety.

Analysis of 2500 people aged 20 to 24 revealed that, compared with other 
age groups, frequent users of the three substances and those who had first 
tried marijuana earlier in life displayed the heaviest and most frequent 
symptoms of anxiety and depression.
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MAP posted-by: Terry Liittschwager