I know of 2 people that went from normal to crazy in 6 month using synthetic marijuana. Sad.
Yes, my cousin has had schizophrenia for many years from abusing drugs. Once you damage your mind, it’s pretty much irreparable.
The synthetic THC is about 7 times more potent than the plant based THC.
It is also very, very cheap. You can spray it on anything and smoke or consume it.
It was legal until just a few years ago.