We don't know
The risks and damage from mdma
in humans is not fully understood.
It isn't possible to give a person mdma and then be able to examine the various parts of the brain microscopically. According to dr. Joseph coyle, one dose of mdma produces permanent changes in the cerebellum in rats and mice. Mdma, as it can lead to unpredictable consequences, should be completely avoided. Are we smart or stupid?