Why does the placebo effect work?

Related questions

1. What is a placebo in biology?
2. Who invented placebo?
3. What is a placebo in science?
4. What does placebo mean in Latin?
5. What is the best explanation of a placebo?

Tags

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