There are at least two active chemicals in marijuana that researchers think have medicinal applications. Those are cannabidiol (CBD) — which seems to impact the brain without a high— and tetrahydrocannabinol (THC) — which has pain relieving (and other) properties.
Also keep in mind that some of these health benefits can potentially be gained by taking THC pills like Dronabinol.recent animal studies have shown that marijuana extracts may help kill certain cancer cells and reduce the size of others