Biologists have known that variations in the amount of sunlight a person receives and her or his circadian clock play a role in the disorder. They have also proposed that the neurotransmitters ...

Researchers have taken a big step forward in studying depression in humans because they have succeeded in improving a mouse model of the disease. Major depression is a common, debilitating illnesses.

Testing mice for depression is challenging. “You can’t put a mouse on a psychiatrist’s couch and ask it how it’s feeling,” said Sarah Bailey, who heads the pharmacology group at the University of Bath ...

Can a psychiatric disorder be diagnosed with a blood test? That may be the future if two recent studies pan out. Researchers are figuring out how to differentiate the blood of a depressed person from ...