http://medicalmarijuana.procon.org/view.answers.php?questionID=000226 I have read both sides on whether it helps or worsens symptoms of anxiety and depression. I have first hand experience with a family member of it helping but also of one having the opposite effect. I would imagine that it all depends on each individual person. There are also different strains in thc that help different ailments. But I wonder, if one can be addicted to pain killers and trick themselves so strongly into believing they are still in pain..can one do the same with medical marijuana?