I don't care about official trials, we know they are bunk. I'm talking about long term users here or any other online community. Have people been known to roll consistently every month or so and still get neurotoxicity/problems?
3 months isn't the gospel. I've read several FAQs and posts on here and no one can agree. The FAQ says it takes 2 weeks for serotonin levels to get back to normal. Another one recommends at least 4 weeks. Another one which I now can't find recommended 6-8 weeks to keep the magic which is the number I go by. I made a thread asking which is correct and people told me 2 months is best. You say 3 months. No one can agree, obviously. Don't be surprised people ask the same question if they can't find a consistent answer.
Three months, based on the research available, is the absolute shortest period I would safely wait.
First, the problem there is that without brain scans, no one can tell you if and to what degree neurotoxicity/neurodegredation has occurred. Going by how someone 'feels' is obviously completely worthless and by the time people are having real 'problems', the amount of damage is likely significant and irreversible.
The issue isn't serotonin replenishment, although I have seen a study that said it took around 4-5 months for serotonin to more or less completely replenish- will try to find that at some point.
The issue is neurodegredation of serotonin uptake sites. Per the studies below, although they cannot be 100% extrapolated to humans they are pretty indicative of what is going on neurologically, recovery is in the realm of 6-12 months. If you're rolling every month, I'd bet any amount of money there is some irreparable degradation going on and likely even with waiting 3 months although significantly safer.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4058674/
https://www.ncbi.nlm.nih.gov/m/pubmed/7680719/
https://www.ncbi.nlm.nih.gov/m/pubmed/1979218/?i=6&from=/7680719/related
https://www.ncbi.nlm.nih.gov/m/pubmed/1374470/?i=2&from=/7680719/related
Based on this study in humans, SERT binding was still reduced at 145 days (4.8 months). It took a minimum of 91 days with an average of 212 days (7 months) for serotonin transporter binding potential to return to normal in most of the brain and even longer in the cerebral cortex.
http://jamanetwork.com/journals/jamapsychiatry/fullarticle/211305#qundefined
Bottom line is that it takes nothing besides self control to easily mitigate problems up front whereas it's near impossible on the back end. MDMA is an incredible drug but why take any more risk than necessary of fucking up the only brain anyone has.
People just want other people to tell them things that allow them to justify frequent use in their head when it comes down to it.