We’re just beginning to recognize the nuanced relationship between people and plants; terpenes are the most commonly spoken language of nature, bio-chemical messages from plants to each other, and to creatures of every terrestrial kingdom.
It's a familiar song, the FDA singing high praise for Epidiolex, a pharmaceutical version of CBD that is less effective than the non-approved whole plant version and costs a ton more. Then there's the matter of Epidiolex side-effects -- everything from elevated liver enzymes and infections to attempts of suicide.
The entourage effect refers to hundreds of natural components within a plant interacting together to produce medicine with superior health benefits. Herbalists have recognized this forever ... pharmaceuticals not so much.