Because it (mostly) doesn't actually work. It looks like it works because it exposes bias in both patients and researchers. This is why it's more effective wi

Because it (mostly) doesn't actually work. It looks like it works because it exposes bias in both patients and researchers. This is why it's more effective with subjective and self reported symptoms like pain, nausea, etc. A great short article about placebo: http://www.sciencebasedmedicine.org/index.php/the-placebo-effect/ http://www.sciencebasedmedicine.org/index.php/the-placebo-ef...