I'm sometimes told, "You can't cure anything with plant medicines." This is flatly untrue. I'll dispel this with a single example, although there are many.

One of the most important plant medicines in history is cinchona, which saved millions of lives, and altered the course of history. When Europeans colonized the Americas, they took malaria with them. In the 1600s, when the Quechua people, indigenous to what is now Peru, first encountered malaria . . . .