Kent State University's researchers have discovered that weight loss help improve memory and concentration.

Their study has shown that bariatric surgery patients exhibited improved memory function 12 weeks after their operations.

The research team studied 150 participants (109 bariatric surgery patients and 41 obese control subjects) at Cornell Medical College and Weill Columbia University Medical Center, both in New York City, and the Neuropsychiatric Research Institute in Fargo, N.D.