Personality News

A new study provides more evidence that dopamine -- a brain chemical associated with reward, pleasure, movement and motivation -- plays a role in obesity.

A specific brain region may be crucial to drug addiction, according to a new study conducted with amphetamine-addicted rats.

Sexual attraction is hard-wired into the brains of small worms called nematodes, say scientists who genetically manipulated some of the creatures to make them attracted to the same sex.

Is working in a hospital or doctor's office a prescription for passion?

Changing to daylight savings time may give people an hour more of sunlight, but it appears that their internal body clocks never really adjusts to the change, German researchers report.

Cigarette smoking and a family history of alcoholism can both affect how a person perceives sweet-tasting foods, U.S. researchers say.

Jane Ross, a 42-year-old Boston area gym buff, is honest about it: When exercising, she sometimes grunts.

Ever get a little testy after a bad night's sleep? Scientists may now know why.

If you're sneaking smokes when no one's looking, beware: One lung doctor says a common device can determine whether someone is a smoker.

Neither positive nor negative emotional states predict how long a person with cancer will survive, a new study finds.

When the clocks go back an hour on the first Sunday in November, you should use that extra hour to make a small payment on your sleep debt, experts say.

Researchers have identified molecular mechanisms in the brain that may explain why some people are less vulnerable to the stress caused by difficult situations.

Doctors have little quality evidence to rely on when deciding how best to treat post-traumatic stress disorder (PTSD) in returning U.S. veterans, a new government-sponsored review of the data concludes.

Chronic overeaters may have their DNA to blame, research suggests.

Coronary heart disease and suicide helped fuel the rise in the risk of death among patients after weight-loss surgery, a new study finds.

About one in every five people who were candidates for bariatric weight-loss surgery did not receive the recommended psychiatric clearance for the procedure, a U.S. study shows.

Moderate, long-term use of opioid pain medications such as morphine does not impair a person's driving ability, U.S. researchers report.

(HealthDay News) - People with Alzheimer's disease sometimes suffer from depression, often when they begin to understand their loss of memory.

Antidepressant drugs called selective serotonin reuptake inhibitors (SSRIs), which include Celexa, Paxil, Prozac and Zoloft, can double the risk of gastrointestinal bleeding, and the threat is more than six times higher if patients take aspirin and similar pain medications at the same time as SSRIs, a new study finds.

(HealthDay News) - People with Alzheimer's disease sometimes suffer from depression, often when they begin to understand their loss of memory.