A placebo can work even when you know it’s a placebo

You may have heard of the “placebo effect,” in which people taking an inactive drug as part of a study actually experience an improvement in their symptoms. As it turns out, the placebo effect still exists if you tell people they’re taking a placebo. This “open-label placebo” strategy doesn’t work for every condition, of course, but it’s a promising way to relieve many common symptoms without medication.