While inconclusive at this stage,
mounting evidence suggests repeated
use of ecstasy acts as a neurotoxin to the
brain. Heavy users report symptoms of
depression (such as lethargy and mood
swings), decreased concentration skills
and memory damage. This is because
the serotonin in the brain is reduced by
ecstasy use. Animal studies indicate that
this serotonin depletion can be longlasting (up to three years) and may even
be permanent.