Having a fast food restaurant close to a high school increases the odds that students will be "super-sized."

The Los Angeles Times reports a new study shows a direct link between obesity and the easy availability of fast food.

Researchers at U.C. Berkeley and Columbia University found that having a fast food place within walking distance of a high school resulted in more than a five percent increase in student obesity.

The researchers suggest schools worried about teen health should think about banning fast-food joints near schools.