No, that's not true. That's a gross misunderstanding of the placebo effect. To the extent the placebo effect can have an effect on actual symptoms it is only on subjective things like pain, nausea or mood etc. Overall the placebo effect includes all types of aspects in a trial that aren't attibutable to the effect of the drug etc. These are things like the tendency for people who are on a clinical trial to perhaps exercise a little more, to be stricter with their diet, be more compliant with taking the drug etc and all of those things can show up as positive effects in a clinical trial results and all of that is included in what we call the placebo effect.