A brain protein known as PCLO (pronounced piccolo) may increase risk of inheriting bipolar disorder, according to a new study.

According to a study by Swedish researchers, children who are chronically ill are much more likely than healthy children to be victims of physical abuse.

Laughing -- and laughing at others -- is a universal phenomenon. So, too, is the fear of being laughed at, according to a study from the University of Zurich.

As life spans continue to increase, so the will risk of dementia in individuals, but new research from Sweden indicates people can minimize this risk.

Children who grow up poor and with a certain variant of a serotonin transporter gene are more likely to exhibit psychopathic behavior, according to a University of Illinois study.

According to a new study from the University of the Basque Country, women are more apt to forgive than men, and parents are more likely to forgive than their children.

Past studies have shown that women smokers have a higher risk of cervical cancer. Now, new research shows that second-hand smoke may damage cells in a woman's cervix, increasing her risk of cervical cancer.

In patients with severe, treatment-resistant obsessive-compulsive disorder (OCD), deep brain stimulation (DBS) may work, according to new research from Brown University.

Neglect, physical and sexual abuse is more than 25 percent higher among deaf and hard-of-hearing children compared to hearing youths.

According to a new study from the National Institutes of Health ( NIH ), medications for attention deficit hyperactive disorder (ADHD) do not appear to cause genetic damage.