Mental Health

Ketamine’s promise for severe depression grows, but major questions remain

Using an old anesthesia drug to pull people out of the depths of severe depression has gone from fringe idea to widespread use in just a few years. But major questions remain about who ketamine can help, why some people get relief while others don’t, and the costs and benefits of different ways of delivering the drug. New findings just came out from a study that seeks to answer some of those questions.