Do you like cookies?  What about pizza?  If you are like most Americans, your answer to both of those questions is probably a resounding "yes." Well, me too.  I love cookies and pizza -- they are two of my favorite foods.  Unfortunately, I shouldn't eat cookies or pizza that often, or in large quantities, because that would be unhealthy.

Why are cookies and pizza unhealthy?  Because those foods contain a lot of sugar and fat (duh!).  What I'm going to tell you next may not be a surprise either: the United States has an obesity problem.  According to the U.S. Centers for Disease Control and Prevention, one in four Americans is obese and that doesn't include those who are considered overweight.