Nope. One of the girl even confessed she wasn't doing mdma because 1°) it induced a depressive episode that lasted for a year. 2°) Had to wear a dental tray at night because of bruxism (=teeth grinding).

I have a friend who does mdma regularly (like once every 3 months). Suffers from bruxism too. When he goes to the dentist, he can tell he's a mdma user.

You're free to waste your health as you wish (also mdma lowers t-cell rate in the blood, they never get back to normal afterwards, a japanese man taking multiple Es a day even died of immunodeficiency). Personally I prefer a good brewage of ipomea heavenly blue or some hawaian baby woodrose.

Edit: Source: https://www.youtube.com/watch?v=RnptUdyDUKI&t=30m (timelink @ 30mins). It is said mdma is neurotoxic can induce permanent damages and trigger chronic depression. Scientist: "I think mdma like no other drug has a much higher neurotoxic potential". Then the dubbing voice takes over. Activates subtitles. "MDMA is a special case [among other ego distorting drugs]. It is delicate to give recommendation of use for this drug and if somebody asked me my opinion I would say it's best to stay away from it".