Restricting how much you eat because you think there is something inherently ugly, or wrong with your body is a sure sign of body dysmorphic disorder (BDD). This kind of body-image disorder may also lead to higher risks in attempting suicide, according to a new study.

Research published in the journal Suicide and Life-Threatening Behavior shows that restricting what you eat because of BDD coincides with twice the risk of attempting suicide. However, researchers did not find a correlation between restricting food intake because of BDD and ideas of suicide.

"Significantly limiting food intake can be physically painful," study researcher Dr. Katharine A. Phillips, M.D., of Rhode Island Hospital, said in a statement. "It goes against our natural instincts to feed our bodies and respond to the physical pain that comes with extreme hunger. The results of this study suggest the importance of assessing individuals with BDD for restrictive eating behaviors to identify suicide risk, even if they have not previously been diagnosed with an eating disorder."

The study included 200 people (more than half were women) who had BDD. They were all between ages of 14 and 64, and the number of past suicide attempts ranged from 0 to 25.

Body dysmorphic disorder occurs when a person is convinced that something about his or her appearance is wrong (even though nothing is actually wrong). The researchers reported that about 25 percent of people with this condition have attempted suicide, and 75 percent of people with the condition think that that their lives aren't worth living.

The Mayo Clinic explained:

When you have body dysmorphic disorder, you intensely obsess over your appearance and body image, often for many hours a day. You may seek out numerous cosmetic procedures to try to "fix" your perceived flaws, but never will be satisfied.

The Mayo Clinic noted that common symptoms of body dysmorphic disorder relate to appearance, such as extreme grooming habits, skin picking, wearing excessive makeup, looking at yourself too much or avoiding looking at yourself in the mirror, and generally being extremely preoccupied and self conscious about appearance.

The condition is usually treated with cognitive behavioral therapy, and some medications can also help, the Mayo Clinic reported.

If you or someone you know is in danger of suicide, call the National Suicide Prevention Lifeline at 1-800-273-8255.

And if you or someone you know has an eating disorder, call the National Eating Disorders Association helpline at 800-931-2237.