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 ...

Loss of the "happiness" brain hormone serotonin might play a role in the decline of brain function as a person ages, a new study reports. People with mild cognitive impairment (MCI) had up to 25% ...

People with fewer happy chemicals in their brain might be at greater risk of neurodegeneration from Alzheimer's disease, according to new research. Of people with mild cognitive impairment, those with ...

Amy Mackelden is a freelance writer living with multiple sclerosis, ADHD, PCOS and anxiety. She's written about health and wellness for Healthline, The Paper Gown, SingleCare, the MS Society and ...

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, ...

In the gut, it gets taken up by platelets and is delivered to parts of the body that need to grow, including in wound healing. During pregnancy, serotonin also helps with growth: It travels into the ...

For decades, some investigators and clinicians have promoted the theory that depression is caused by abnormalities involving the serotonin system. This hypothesis has been encouraged by pharmaceutical ...

SSRIs enhance CD8 T cell antitumor activity by inhibiting SERT, an immune checkpoint in tumors, suggesting potential repurposing for cancer immunotherapy. High intratumoral SERT levels correlate with ...

Researchers have discovered new connections between the gut and brain that hold promise for more targeted future treatments for depression and anxiety, and which could point scientists to ways of ...

Researchers have uncovered novel aspects of astrocyte function in olfactory, or smell, perception revealing changes in their gene expression patterns that turn these brain cells into a hub of ...