A sweeping review of more than 2,500 studies reveals that despite booming public enthusiasm, cannabis has strong scientific support for only a few medical uses, leaving most popular claims—like relief for chronic pain, anxiety, and insomnia—on shaky ground. T…

Medical cannabis is widely used for issues such as chronic pain, anxiety and insomnia, but a major analysis led by UCLA Health reports that the scientific support for these uses remains weak.A study …