Stef, I would see this as an opportunity to educate instead of brush off. The problem in this world isn't the rational people, it's the irrational ones. It's up to you how you want to handle these people of course, but if you're only getting through to rational people, well, what does that really change? It's kind of like marketing a weight-loss book to professional athletes and laughing away all those silly fat people who think eating twinkies is a good thing. I know you're busy, we're all busy, but why not try to find some value in what he says, meet him at that point, and then offer him the opportunity to post his thoughts here or direct him to some resources?
And I find it interesting that everyone who's responded so far (aside from fingolfin) would rather get a cheap laugh instead of actually trying to find value in anything he said or a better way to handle his message. Was his point about non-intuitive solutions completely invalid? Is it bad to seek out useful things? Do you know everything about healing? The guy never claimed he could heal broken arms (although he might believe that). He was talking about minor ailments, and who's to say there aren't undiscovered methods of treating them?
I help take care my Grandmother a couple of days a week and she occasionally feels light-headed, nauseous, etc. I've had a lot of success relieving these types of things (although it's far from 100% "cure" rate), but it's not through some special energy channels or the like. It's based on a scientific understanding of how the brain and pain operate, and I've learned some techniques that essentially help distract her mind from these pains and move her to a different place mentally. Maybe this guy's unconsciously doing something similar. Look at all we know about placebo. There have been countless scientific studies where the placebo group "outperforms" the group that receives nothing. Can you tell me what's going on scientifically?
In short, be skeptical, but have an open mind and test scientifically. And use these times as opportunities to educate the mystics.