Jesus was able to heal people. While he did this in miraculous ways I believe he meant for us to be able to heal each other also and this is the way we can accomplish this.
*Healing* is different than *prevention* in my book
That's true. Prevention doesn't always mean vaccinations etc either. I think a lot of the present day "ailments" are because of our lazy life styles. If we took more pride in the bodies God gave us, we would be far better off.Diabetes and Obesity are two life style diseases that could be prevented by making smart choices.