Acupuncture is right after all!

http://www.gizmag.com/link-between-brain-and-immune-system/37830/

But, we stoners have always know this. And it is also in all the scriptures, in this world.

Know Self
As you think you shall become
You are what you eat
etc.

Can it deaden my nerves in my urethra? Or cure my lower back from grinding on my hips? Hmm?

Yes

Man, heal thyself. Yep its in there.

It is all about intention. And if you don't "believe" it, by definition, you have absolutely no intention.