TULSA, Okla. (AP) - A researcher at a Tulsa clinic says a decadelong study into anorexia nervosa is beginning to reveal that those who suffer from the disease might have a genetic predisposition toward it.

The study, known as the Genetics of Anorexia Nervosa collaboration, is being done in eight cities in North America, including Fargo, N.D., and two European cities.

It is funded by the National Institutes of Health.