Let's be honest for a minute. Who hasn't fallen victim to the seductive call of a bag of chips or a chocolate bar? Yes, I'll confess it—especially during those grueling late-night study sessions, I've also been there.

But have you ever wondered whether there's more to that sweet or salty delicacy than simply the calories, among the guilty pleasures of devouring a donut? Can consuming these processed treats cause a problem other than a sugar crash, specifically?