Uxma Javaid B said.
Great observation Tony I would like to share my observation here that Marijuana is not just effective in ADHD but also for those who suffer from Schizophrenia and Bipolar disorder, they also tend to use some form of drugs (smoking, marijuana are more in use) to subside their symptoms and interestingly they get benefit from such drug use (feel more calmer and thought process in control). Marijuana (a mind-bender drug) has some significant properties which slower our thought process and gives us a temporary sense of calmness. People learn to use these drugs for their benefit through experimentation or on a friend's recommendation. It seems a perfect remedy for such psychiatric illnesses thus far.
But the other side of the fact is that illicit drugs do have a great susceptibility for addiction. The person can go into double jeopardy if he also has a predisposition to addiction along with a psychiatric illness such as ADHD, Schizophrenia, Bipolar Disorder or Depression. It's not very uncommon for professionals to treat Dual Diagnosis at Rehabs.
So, it's being wise not to use marijuana or other illicit drugs to self-medicate one self for any Psychiatric illness. People should take proper medication suggested by health care professionals (Doctors, Psychiatrists) to get long term benefits.