What causes placebo?

Related questions

1. How long do placebo effects last?
2. Are placebos real?
3. Is homeopathy have side effects?
4. How powerful is the placebo effect?
5. Does homeopathy have side effects?
6. What is a placebo effect in psychology?
7. How long does the placebo effect last?
8. Is homeopathy allowed in Germany?
9. What are the side effects of Nux vomica?
10. Can placebos work?

Tags

1. #person
2. #caused
3. #chemistry
4. #medication
5. #effect
6. #theories
7. #possible
8. #expectations
9. #placebo
10. #something
11. #common
12. #cause
13. #expects
14. #their
15. #effects
16. #similar