By LACEE SHEPARD
Capital News Service
LANSING — A recent study of rats at Michigan State University could lead to identifying a genetic cause of binge eating. An MSU psychologist gave two strains of rats – the Wistar and Sprague- Dawley rats – vanilla frosting for two weeks to see if they developed binge eating at different rates. Binge eating is an excessive consumption of food at one time. . The result points to a genetic difference between the two strains that affects how likely they are to develop the eating disorder.