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Every cell in our bodies runs on a 24-hour clock, tuned to the night-day, light-dark cycles that have ruled us since the dawn of humanity. The brain acts as timekeeper, keeping the cellular clock in sync with the outside world...

In a first-of-its-kind effort to illuminate the biochemical impact of trauma, researchers at NYU Langone Medical Center have discovered a connection between the quantity of cannabinoid receptors in the human brain, known as CB1 receptors, and post-traumatic stress disorder.

Adults with depression and who receive certain types of anti-depressants have an increased risk of developing Clostridium difficile, a costly and serious hospital-associated infection, according to a new University of Michigan Health System study.

There may be a way for older people to prevent natural aging of their minds, and it could be as simple as playing a video game.

Elderly patients who receive anesthesia are no more likely to develop long-term dementia or Alzheimer's disease than other seniors, according to new Mayo Clinic research.

Body dysmorphic disorder is a disabling but often misunderstood psychiatric condition in which people perceive themselves to be disfigured and ugly, even though they look normal to others.

Americans are over-diagnosed and over-treated for depression, according to a new study conducted at the Johns Hopkins Bloomberg School of Public Health.

Post-traumatic stress disorder affects nearly 8 million adults in any given year, federal statistics show.

Playing video games for an hour each day can improve subsequent performance on cognitive tasks that use similar mental processes to those involved in the game.

A project led by scientists from Royal Holloway University in collaboration with Princeton University, has found evidence of how people form into tribe-like communities on social network sites such as Twitter.

Children who avoid situations they find scary are likely to have anxiety a Mayo Clinic study of more than 800 children ages 7 to 18 found. The study published this month in Behavior Therapy presents a new method of measuring...

Numerous findings in brain imaging studies describe the changes in brain structure and function associated with schizophrenia as emerging early in the course of the disorder.

One in three people who survived stays in an intensive care unit (ICU) and required use of a mechanical ventilator showed substantial post-traumatic stress disorder (PTSD) symptoms that lasted for up to two years, according to a new Johns Hopkins...

Pre-war vulnerability is just as important as combat-related trauma in predicting whether veterans’ symptoms of post-traumatic stress disorder (PTSD) will be long-lasting, according to new research published in Clinical Psychological Science, a journal of the Association for Psychological Science.

Peers exert a greater influence on teenage girls' dissatisfaction with their bodies than do thin ideals in television or social media use, according to new research by Dr. Christopher J. Ferguson and colleagues from Texas A & M International University...