My son cycled in and out of depression for years before he had a psychotic break. He told me right after his 18th birthday that he used marijuana. When I talked to the family doctor he said it probably did help depression. He never mentioned the increased risk of psychosis. Later had an endocrinologist tell him a little every now and then didn’t hurt anything. I knew he felt happier with it and was very ambivalent, but in hindsight can see that was possibly a trigger for his first break. He has not used since then, but still supports organizations that lobby for legalization. My personal theory (no scientific evidence to back it up) is that when it grew wild all of the different chemicals balanced each other. Now “the good stuff” is bred to have very high THC. That is probably what causes the hallucinations. The other chemicals may calm the brain. God’s creation is very complex.
My son has tried numerous prescriptions. Some of them did not work. Others caused frightening side effects such as rage, sleeplessness, threatening voices, etc. Truthfully, a lot of legal drugs have the possibility to cause much more harm than marijuana. Clozaril dropped his white blood count and neutrophils to dangerously low level in one week! Then 8 treatments of ECT were tried. Afterwards he became so psychotic that his speech was disorganized to the point that it was hard to even know what he was saying. When he was hospitalized at that point, the doctor agreed to try lithium. In USA people think of lithium as a bipolar drug. It is not prescribed as much because it is an old med, not as profitable, and also requires blood tests. Besides stopping mania it can work for people with treatment resistant depression AND IT HELPS PSYCHOSIS. My son still takes Zyprexa and Prozac as well, but lithium is the only med I’ve ever heard him say makes him “feel” better. It is also the only mood stabilizer that is clinically proven to reduce suicide attempts!