Counting calories isn't simply a bummer, it might actually increase your risk of depression, a new study says.

People on low-calorie diets scored higher for symptoms of depression, compared with those not dieting, researchers reported Tuesday in BMJ Nutrition Prevention & Health.

Overweight people and men were particularly vulnerable to the mood changes that come with a low-calorie diet, results show.

"Calorie-restricted diets were associated with higher depressive symptom scores, which contrasts with the findings of earlier controlled studies," concluded a team led by senior researcher Dr. Venkat Bhat, an associate professor of psychiatry at the University of Toronto.

Related