It's one of those quotations that's so dead-on no one disputes it, like Ralph Waldo Emerson's observation, "Knowledge is the antidote to fear."
Almost 400 years ago, the English philosopher Francis Bacon wrote, "Knowledge is power." Since then, there's really been little reason to question him.
Until the obesity epidemic.
In the last 20 years, the number of overweight children and adult Americans has nearly tripled, yet during that same span our knowledge about nutrition, diabetes, and other weight-related subjects has probably increased tenfold.