A team of Australian researchers analyzed the results of 83 previous studies that looked at therapeutic effects on mental health and neurological conditions, including depression, anxiety, Tourette's syndrome, ADHD, PTSD and psychosis.
While scientists have found a positive effect of marijuana - CBD-THC - the main ingredient in marijuana to relieve pain, anxiety symptoms and some PTSD symptoms, this is not the case in all cases. Taking CBD has limited benefits for psychosis, for example. The researchers also noted that medicinal marijuana (where it is legal) is mainly prescribed to patients in whom anxiety and depression are secondary conditions - that is, chronic illness is the "primary" diagnosis - this makes it difficult to recognize how this psychoactive substance It helps.
For example, marijuana can reduce chronic pain and nausea, which then leads to a reduction in mental health symptoms. This is good news, but it doesn't necessarily mean that marijuana directly treats depression and anxiety.
It should also be noted that there is little evidence in the literature that cannabis is effective in treating any mental health disorder.
Due to the presence of cannabidiols (CBD) in marijuana, many people try to treat their mental health problems with recreational rather than medical marijuana. Meanwhile, research clearly shows that non-medicated marijuana use can worsen mental health symptoms.