Major review confirms cannabis use associated with poor mental health

The study was conducted by an international team of academics said: “Cannabis should be avoided in adolescents and young adults." File picture

Cannabis use is associated with poor mental health and the ability to think, a major new review has found.

It said the drug should be “avoided” in adolescents and young adults and when driving or pregnant. Researchers in what is described as an “umbrella review” of some 100 studies also examined cannabis-based medicines and found that “most outcomes” claimed are supported by “weak evidence”.