Many people argue that marijuana does not CAUSE the problems described, but rather is more likely associated with the general breakdown that allows these symptoms to manifest. If you see a black cat just before you have bad luck it does not mean that the black cat caused the bad luck. The legal status of marijuana means that a person is more likely to try it under circumstances related to an overall deterioration of circumstances. However, the principle of homeopathy would lead us to expect that a mild euphoriate such as cannabis might cause an opposite reaction (such as depression) in a person with underlying tendency to depression. However, the homeopathic principle would lead us to expect that it would ultimately be curative.