I'm not sure what she means by "go bad", but this doesn't seem accurate at first glance. Does anyone have experience with honey going bad? I can't recall anytime that honey stored under normal and proper conditions has gone bad.
The important thing to remember, Hens said, is that once honey is pasturized (heated higher than about 105 degrees) or filtered, it is no longer beneficial because the pollen granules have been removed. Basically the more unadulterated and fresher, the better.
"Another mythology is that honey doesn't go bad but the truth is it does. When you buy honey for theraputic purposes, you want it to be as fresh as possible," Hens said. "The longer its been heated or the longer its been sitting around those (health) properties are no longer attached to it."
(and the word is "myth", not "mythology"...)