Ever seen a man with a wicked smile on his face? There is a good chance he saw something that reminded him of a wonderful memory. People just cannot ignore visual stimuli that remind them of a rewarding experience.

Four-year-old Donny asked his dad, "What is a girl's penis called?" His father replied saying, "Donny, you can never say this word, but it is called a vagina."

Seeking treatment for all categories of substance abuse problems rose only 11 percent in the decade 1998-2008. But the story is vastly different for benzodiazepines.

Social anxiety disorder (SAD) is currently defined as having excessive anxiety that's not related to a medical condition. Should researchers change that definition for obese individuals?

Researchers at UCLA have discovered a brain-scan technique that could help detect dementia in adults with Down syndrome. The researchers created a chemical marker, known as FDDNP.

The 1980 fight between Sugar Ray Leonard and Roberto Duran held in the Louisiana Superdome found Duran a beaten man. In the closing seconds of the eighth round, Duran turned his back to Leonard and quit, saying to referee Octavio Meyran...

A blue light starts flashing, accompanied by an appealing siren sound. An overhead announcer blares, "Blue light special on aisle 7." K-mart has it right - once conditioned, our minds can't ignore rewarding objects.

It's widely known that construction is an industry filed with more dangers than the average workplace. New research reaffirms that suspicion.

Our bodies make a hormone called leptin that regulates our appetite. It may be that this hormone could also be useful in regulating depression.

Being exposed to violence and trauma can have a profound impact on the physical, mental and emotional well-being of children. And the effects can linger for years.