user unknownin Skeptics Stack Exchange • Recommends
On “Is the placebo effect a purely psychological effect?”
Here is link to this video (3 min). It only concentrates on some aspects of placebos, not so much on how they work, and whether the effect is just an illusion, which is the most interesting aspect of placebos, I guess.
Since some placebos had an effect on the volume of the lung, you can't say it's just an illusionary effect.