In the marijuana plant, there are about 500 chemicals. NY State allows us to recommend THC and CBD. Which leaves 498 or so other potentially helpful medicines sorta in the background.
One of these potentially useful medicines is beta caryophyllene, a chemical found in lots of plants and foods. There is a pretty good and growing body of evidence that beta caryophyllene binds to CB2 receptors just like THC binds to CB1 receptors. Beta caryophyllene may then decrease inflammation in the body by calming the cells involved in inflammatory diseases like Crohn's disease and rheumatoid arthritis. There is some evidence in lab studies that this is what happens.
So we have just begun to explore the health benefits of medicines we can get from the marijuana plant. Google "marijuana terpenes" to get more info. Watch This Space.