The theory is that new meth is based on a synthesis using a chemical called P2P rather than the old synthesis that used ephedrine. There are claims that this new form of meth is chemically different in some what that started creating schizophrenia around 2017.
However, when I looked into it, there doesn't seem to be much support for this idea. Current meth is more pure than ever before. Some people suggest that the use of lead could be responsible, but not all P2P syntheses use that, and it wasn't common in 2017. Instead, it seems like the explanation is just the obvious one: P2P synthesis has resulted in people doing much, much more meth than ever before.
https://news.ycombinator.com/item?id=28938888
The theory is that new meth is based on a synthesis using a chemical called P2P rather than the old synthesis that used ephedrine. There are claims that this new form of meth is chemically different in some what that started creating schizophrenia around 2017.
However, when I looked into it, there doesn't seem to be much support for this idea. Current meth is more pure than ever before. Some people suggest that the use of lead could be responsible, but not all P2P syntheses use that, and it wasn't common in 2017. Instead, it seems like the explanation is just the obvious one: P2P synthesis has resulted in people doing much, much more meth than ever before.