Meditation for anxiety, depression?Some 30 minutes of meditation daily may improve symptoms of anxiety and depression, a new Johns Hopkins analysis of previously published research suggests. “A lot of people use meditation, but it’s not a practice considered part of mainstream medical therapy for anything,” says Madhav Goyal, M.D., M.P.H., an assistant professor in the Division of General Internal Medicine at the Johns Hopkins University School of Medicine and leader of a study published online Jan.