Fat and Dull

In a study published in the journal Eating Weight Disorders, Vol. 10, N.1, researchers have outlined a possible link between severe obesity and attention deficit hyperactivity disorder (ADHD) -- a mental condition that effects hundreds of thousands of Canadians.

Link.

Maybe people who don't have the discipline to resist food don't have the discipline to concentrate. Or they don't have the discipline to resist food because they don't have discipline in general, including the ability to concentrate.

Or it could just be more scientific hokum.