Teens who perceive themselves either too fat or too thin are likely to think about suicide.

　　Suicidal impulses and attempts are much more common in teenagers who think they are too fat or too thin, regardless of how much they actually weigh, a study found.

　　Using actual body size based on teens' reports of their height and weight, the researchers found that overall, overweight or underweight teens were only slightly more likely than normal-weight teens to have suicidal tendencies.

　　But teens who perceived themselves at either weight extreme -- very fat or really skinny -- were more than twice as likely as normal-weight teens to attempt or think about suicide.