I wasn't here in the nineties, but I want to add my two cents, even if I'm tired and my english isn't perfect.
Things have changed a lot in 30 years. Clothes trends went by, came back and it's going full circle again. But not only the clothes changed. Apparently the MDMA did too. This thread almost tries to put the old MDMA user from the 90's into some kind of a full-body time capsule and project him in 2019, spoonfeeding him some of today's MDMA and expect a different result. Scientifically speaking, this lacks environment impact, neurotoxicity impact, yet all the 5 theories are focussing on the MDMA.
Let's brainstom on other possible factors. What about another theory saying that we eat differently, or we take different painkillers, we avoid hot/packed environments, we have more control on the actual dosage, we expect more from the drug than in the past. What about something else?
What if I told you the story of Kevin? Kevin used to take MDMA. One day, as he switches to a new MDMA batch, he is greatly disappointed by the quality of the MDMA so he sends it to a lab only to discover it was some 92% MehDMA. Not wanting to waste another month to take another empathogen, he decides to switch to the previous vendor which offers what he thinks is the same good ol' MDMA. He takes it and it actually feels good, way better than the MehDMA. What are the possible reasons this second batch felt like shit? Could it be what's in the MDMA? Could it be the set/setting/environment, etc. We can't really tell. What we can tell is that Kevin thinks he has some valuable piece of information to share on the internet, unlike Tom who maybe took this very same MehDMA and it worked greatly for him, but we will never hear about Tom. Because the whole process of going through a bad MDMA experience and rushing here to report it is actually filtering our sample. Kevin might be a "roll-virgin", and Tom too, or both could be experienced MDMA that it does not make a dent in this filtering process. Hundred of people, or even ten thousands. There are maybe millions of MDMA users, and you can be sure most of them have no concern into sharing their good experiences, but sharing their bad experiences is kind of human, to share it with others, making others avoid doing the same mistakes.
I'm pretty sure the "good old MDMA" did not work for 100% of the users, and not 100% of the time. Those for whom it didn't work for their first times certainly did not pursue their drug adventure, or at least with MDMA, and they are not here 30 years later to talk about how "shitty" the MDMA was back in the days. This is also another filtering process. Someone who doesn't enjoy a drug is less likely to try again the very same drug.
What I'm trying to say here is that, something probably changed. Actually, everything changed. And it's probably that this MehMDA exists, but I'm confident that it's overlooked. The MDMA experience gather both the MDMA and the user, and rulling out half of the team seems kind of wrong. Filtering processes can actually increase the undesirable effect reports ratio. And what about the set/setting? As long as we don't apply a double-blind study with both batches of MDMA that contain yet unknown differences (kind of a stretch this one), then we can't know. And by double-blind, I mean DOUBLE-blind. Results from million-dollar equipments actually can't give us a clue about the psychoactivity of an impurty, it's potency and BBB penetration if it's psychoactive, its neurotoxicity, its range of effects/side-effects and impact on the MDMA's effects...
While you were focussing on the MDMA, I was focussing on the user. Actually, I was focussing on myself first, but what happened next should be interesting enough. I abused the substance and was starting to experience a loss of magic along with extended undesirable side effects from the very same batch. To make it short, I found a paper about NAC to help reverse Methamphetamine induced neurotoxicity in only two weeks (in rats), including in critical brain regions concerned for the MDMA. I literally bought 250g of NAC and took 600mg for a few months, not even waiting a month between rolls (~4 weeks) and taking the same dosage or less than usual, only to gradually see the effects being stronger and stronger to the point it was close to my first time.
Boooo you suck
@Sqqlut, this is purely anecdotal!
Yes it is, and I even made a thread about it two years. Oops, now some people who lost the magic or where experiencing unpleasant effects are now buying the $0.05 a day magic formula and reporting back. Today 18 of the 20 reports (after a loss of magic) report positive results from NAC. 90% positive results from my (not big enough) sample size, yet the results are here, and offer an affordable and easy method to extend this sample size. This method can't obtain any objective result the same way MDMA-assisted psychotherapy can't be done in double blind. You know when you are rolling... and when you are not. It's kind of difficult for the doctor to foul the patient, and even more difficult for the patient to foul the scientist by getting bigger pupils on command.
I'm not saying that nothing changed with the MDMA, I'm saying that probably a lot of people reporting differences between MDMA batches might be biased by their bad experiences and were"filter-worthy", biased by this MDMA hyperfocus, biased by MDMA induced neurotoxicity, or the many others random things that could add noise to this mess. It's time to "un-noise" this game, get your rose-tinted glasses out of the way and pursue the speculation game, but think out of the box this time!