Why do doctors use placebos?

Related questions

1. Is it ethical to use placebo in clinical trial?
2. Can a placebo work if you know?
3. How does a placebo work?
4. Are placebo trials ethical?
5. Does placebo work if you know?
6. Is the placebo effect real?
7. Is Adderall addictive?
8. Can placebo cure anything?
9. Is Ibuprofen a painkiller?
10. Does the placebo effect wear off?

Tags

1. #influence
2. #placebo
3. #treatment
4. #group
5. #missing
6. #trials
7. #identical
8. #given
9. #study
10. #ingredient
11. #while
12. #active
13. #placebos
14. #research
15. #control
16. #another
17. #widely
18. #effect