Natural is an unnatural term, entirely manmade. Nothing about it is natural anymore.

Nature today connotes perfect, wholesome, balanced, and right as rain. Natural cures, therefore, must be better than "unnatural" medicines created by flawed humans. This unquestioned positive nature of nature has created a multi-billion dollar industry of natural therapies.

But if nature is everything, then nature should encompass imperfect, unwholesome, unbalanced, and wrong as David Hasselhoff singing the Beatles' song "Rain."

In reality, nature is neither good nor bad. Nature is indifferent. Nature is merely the framework within which humans evolved. And while that might sound impressive, evolution is only concerned with getting humans to live to about age 15, mate, and then live a couple years longer to raise offspring.