That's the saddest paper I've ever seen. Some student did a paper review, tacked on a hypothesis, did no research on it, and came up with something that looks m

That's the saddest paper I've ever seen. Some student did a paper review, tacked on a hypothesis, did no research on it, and came up with something that looks more like a homework assignment than a research paper. Dose Response must have a negative impact factor! Anyway, South America was colonized by humans around 15 millennia ago. Does that look like a reasonable time frame for humans to evolve a positive reaction to the specific blend of chemicals in the mate plant? Does that sound like it would have any impact at all on a white North American child with no indigenous American ancestry? Of course not.