ATLANTA (CBS Atlanta) — A new study finds that one in 10 men who work out in a gym may believe they have “bigorexia.”

Bigorexia is a type of muscle dysmorphia that makes people believe they are small when in actuality they are big and muscular.

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Rob Wilson, chairman of the Body Dysmorphic Disorder Foundation, told BBC News that “10 percent of men in the gym may have muscle dysmorphia.”

“Muscle dysmorphia is a preoccupation with the idea that one isn’t big enough, isn’t muscular enough. There are thousands upon thousands with it, who are going to be excessively concerned about their appearance, having poor self-esteem, and also feeling very anxious and very worried,” he said.

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The National Health Service in the United Kingdom believes that bigorexia could be genetic or caused by a chemical imbalance in the brain, BBC News reports.

“Sometimes individuals can become very depressed and hopeless and that can even lead to suicide,” Wilson explained.

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According to BBC News, signs of bigorexia may include working out constantly, excessively looking at one’s body in the mirror, use of steroids and abuse of supplements, angry outbursts, and depression.