In multiple states, medical marijuana and cannabis have been legalized for recreational use as well. Proponents of medical marijuana cite evidence of treatment for myriad conditions, ranging from glaucoma to nausea, to aiding in chemotherapy and Parkinson’s treatment. THC and CBD, the active cannabinoids in marijuana, produce mind and mood-altering effects, so even medical usage of marijuana could be dangerous for people in addiction recovery. From causing signs of addiction to possibly leading to the use of harder drugs, there are good reasons for people in recovery to avoid marijuana usage.