Your body already makes marijuana-like chemicals that affect pain, inflammation, and many other processes.  Marijuan can sometimes help those natural chemicals work better says Laura Borgelt of the University of Colorado. 

The U.S. Food and Drug Administration (FDA) has not recoginized or approved the marijauna plant as medicine.  So far, researchers have not conducted enough large-scale clinical trials that show that the benefits of the marijuana plant outweigh its risks in patients it is meant to treat.

Marijuana may be smoked, vaporized, eaten or taken as a liquid extract.

The side effects that usually dont last long are:  dizziness, drowsiness, short-term memory loss, changes in mood, impaired body movement, and euphoria. There are more serioux side effects that include anxiety and psychosis. Long-term effects may reduce thinking, memory, and learning functions. Marijuana used during pregnancy is linked to increased risk of both brain and behavioral problems in babies as reported by the National Institute on Drug Abuse.

Compared to nonusers, heavy marijuana users more often report lower life satisfaction, poorer mental health, poorer physical health, and more relationship problems.  Users report less academic and career success. It is also linked to more job absences, accidents, and injuries reported by McCaffrey, Pacula and Ellickson in a study of marijuana use. There also can be withdrawal symptoms of long-term marijauna users.