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A sniff of happiness: Chemicals in sweat may convey positive emotion

Humans may be able to communicate positive emotions like happiness through the smell of our sweat, according to new research published in Psychological Science, a journal of the Association for Psychological Science. The research indicates that we prod…

Novel mechanism involved in attention-deficit hyperactivity disorder, study shows

Researchers have found, in animal models, that the absence of a certain enzyme causes a syndrome resembling the attention-deficit hyperactivity disorder (ADHD). The study paves the way for a greater understanding of this childhood and adolescent diseas…

Increasing evidence points to inflammation as source of nervous system manifestations of Lyme disease

About 15 percent of patients with Lyme disease develop peripheral and central nervous system involvement, often accompanied by debilitating and painful symptoms. New research indicates that inflammation plays a causal role in the array of neurologic ch…

Wristband that measures rest, activity schedule may help predict response to antidepressants

A wristband that records motion throughout a 24-hour cycle may be an inexpensive, safe way to determine which patients with major depressive disorder will respond best to commonly prescribed drugs…

Depression and diabetes combined may create even higher risk of cognitive decline

Depression and diabetes each raised dementia risk on their own, but risk rose even more for people with both, in a large study of Alzheimer’s disease and vascular dementia.

Oxytocin may influence maternal social behavior, study finds

A new study finds oxytocin influences how adult female mice respond to distress calls from their pups – a major form of mammalian social behavior.

Personalized computer feedback can mitigate problem gambling behaviors

More than 1.6 million college-aged adults meet the criteria for problem gambling.

Socially anxious youth in treatment can enhance recovery through simple service tasks

This century’s increase in addiction issues among U.S. youth may be related to their developmental need to fit in, particularly youth with social anxiety disorder (SAD), which could exacerbate the…

Eight nutrients to protect the aging brain

Brain health is the second most important component in maintaining a healthy lifestyle according to a 2014 AARP study. As people age they can experience a range of cognitive issues from decreased critical thinking to dementia and Alzheimer’s disease….

Complex cognition shaped the Stone Age hand axe

The ability to make a Lower Paleolithic hand axe depends on complex cognitive control by the prefrontal cortex, including the ‘central executive’ function of working memory, a new study finds. The results knock another chip off theories that Stone Age …