Dogs who scored well on the Wesen test, which is used to analyze a dog's temperament, tended to have lower levels of cortisol ...

A major paper debunking the “serotonin hypothesis” has a lot of people agitated. But leaving more room for nuance in our discussions about mental health is the right idea. Building a more complex, ...

A new study in mice strongly suggests that serotonin and drugs that target serotonin, such as anti-depressants, can have a major effect on the gut's microbiota -- the 100 trillion or so bacteria and ...

A new study in mice led by UCLA biologists strongly suggests that serotonin and drugs that target serotonin, such as anti-depressants, can have a major effect on the gut's microbiota -- the 100 ...

Comparing PET scans of more than 90 adults with and without mild cognitive impairment (MCI), Johns Hopkins Medicine researchers say relatively lower levels of the so-called "happiness" chemical, ...

A new study reinforces long-held suspicions that the brain chemical serotonin, a molecule usually associated with mood, appetite and libido, makes a direct contribution to the actions of cocaine.

To enjoy the scent of morning coffee and freshly baked cookies or to perceive the warning smell of something burning, the brain needs two types of cells, neurons and astrocytes, to work closely with ...

LONDON, UNITED KINGDOM - 2022/03/09: A protester holds up a placard demanding research into Long Covid-19 during the demonstration. A protest group in Parliament Square demands the government invest ...

Increasing serotonin can change how people learn from negative information, as well as improving how they respond to it, according to a new study published in the journal Nature Communications. The ...