But the effects are still rather limited to nausea, pain and the systems influenced by stress response (esp. some immune system functions). You have to look at

But the effects are still rather limited to nausea, pain and the systems influenced by stress response (esp. some immune system functions). You have to look at the absolute change in the body. Which is rather limited. Stress in general can be reduced by more effective means (CBT, relax. tech.) than sham treatments. For practical application there are other OTC substances you can take (such as adaptogens/anxiolytics - e.g. Ashwaganda & l-theanine) which will have a placebo effect (obviously differing on method of deliver (white coat vs. self, injection vs. pill) and additional effects.