The two main compounds in cannabis are in a constant balancing act.
Many people who use cannabis do it for the euphoric effects caused by the main psychoactive ingredient, tetrahydrocannabinol, often called THC. But THC can also cause unpleasant side effects like paranoia, dissociative thoughts, impaired memory or even psychotic episodes. As cannabis has become more potent, it is becoming more likely that some users will experience those effects. But another compound present in the plant, the non-psychoactive cannabidiol, actually works against THC and can block those negative effects. Read more in Inside Science.