A meta-analysis of more than 80 studies from the past four decades finds weak evidence to support the use of medicinal cannabis to treat anxiety, depression, and other mental health disorders.

The effects of the therapy in a small group of  patients were long-lasting, researchers say, adding to evidence that the approach works for treatment-resistant depression.

Some variants implicated in the disease are also linked to other psychiatric disorders.

The drug promotes and sustains brain cell connectivity in mice, reversing the effects of chronic stress.

Frequent use of high-strength cannabis may increase the risk of mental health problems, according to a large-scale epidemiological study.

Large-scale genomic studies of anorexia and bulimia are turning up clues about the conditions’ development and persistence.

The PsychENCODE project delves into the DNA, RNA, and protein changes related to brain development and neuropsychiatric disorders, but researchers caution it’s just a first step toward treatment.

Rosehip neurons are not found in rodents. Perhaps they offer clues about what separates our brains from those of other animals.

In the largest-ever study of its kind, researchers combined genomic data from nearly 900,000 patients and healthy individuals to identify commonalities among 10 mental illnesses.