Medical research

Vicious cycle: Obesity sustained by changes in brain biochemistry

With obesity reaching epidemic levels in some parts of the world, scientists have only begun to understand why it is such a persistent condition. A study in the Journal of Biological Chemistry adds substantially to the story ...

Psychology & Psychiatry

Self-affirmation improves problem-solving under stress

It's no secret that stress increases your susceptibility to health problems, and it also impacts your ability to solve problems and be creative. But methods to prevent associated risks and effects have been less clear – ...

Health

TV viewing, exercise habits may significantly affect sperm count

Men's sperm quality may be significantly affected by their levels of physical activity, according to a new study led by researchers at Harvard School of Public Health (HSPH). They found that healthy young men who were sedentary, ...

Psychology & Psychiatry

Under similar stress, rich live longer than poor, study reports

(HealthDay)—Money may not buy you happiness, but it can help you avoid the ill effects of unhappiness and stress. That's the upshot of a new British study that finds stressed-out rich people live longer than the stressed-out ...

Neuroscience

Could poor sleep contribute to symptoms of schizophrenia?

Neuroscientists studying the link between poor sleep and schizophrenia have found that irregular sleep patterns and desynchronised brain activity during sleep could trigger some of the disease's symptoms. The findings, published ...

Psychology & Psychiatry

Negative news stories affect women's stress levels but not men's

Bad news articles in the media increase women's sensitivity to stressful situations, but do not have a similar effect on men, according to a study undertaken by University of Montreal researchers at the Centre for Studies ...

Psychology & Psychiatry

Born to lead? No sweat

(HealthDay)—It's good to be the boss. How good? New research suggests that leaders suffer from less stress than people in less powerful positions.

Immunology

New study explains how stress can boost immune system

A study spearheaded by a Stanford University School of Medicine scientist has tracked the trajectories of key immune cells in response to short-term stress and traced, in great detail, how hormones triggered by such stress ...

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