Obesity tied to risk of psychiatric disorders

By Amy Norton

NEW YORK (Reuters Health) - Obesity is a well known risk factor for certain physical health problems, but a new study suggests that heavy adults also have higher rates of psychiatric disorders.

Using data from a national health survey of more than 40,000 Americans, researchers found that obese adults were up to twice as likely to suffer from depression, anxiety and other mental health conditions as normal-weight adults.

In addition, even moderately overweight people had elevated rates of anxiety disorders, the study found.

Whether excess pounds somehow lead to mental health problems is not clear, according to the researchers. But the findings do indicate that a range of psychiatric disorders are more common among overweight people.

They also suggest that briefly screening obese patients for such conditions could be useful, lead researcher Dr. Nancy M. Petry told Reuters Health.

She and her colleagues at the University of Connecticut Health Center in Farmington report their study findings in the journal Psychosomatic Medicine.

The findings are based on a government study of 41,654 U.S. adults who were assessed for recent and lifetime psychiatric disorders.

In general, Petry's team found, obese adults had higher risks of major and milder depression, anxiety disorders like panic disorder and phobias, and "manic" episodes. They also showed higher rates of alcohol abuse and personality disorders, such as obsessive-compulsive behavior and paranoid personality disorder.