The Placebo Effect

Takahide Morita

Outline

Conclusion

What is placebo?

Can Belief Cure People, a nd How? Can We Control the Placebo Effect? Why Does it Work Well for Som e People, but Not for Othe rs? Can We Use It As a M edicine, Also Ethically?

Brain

Jon-Kar Zubieta (2005)

PET Scan(positron emission Tomography)

http://www2.jyi.org/news/nb.php?id=429

endorphine(mu-opioid)

http://www.adhd-institute.com/Treatment/Medication-based-therapy.aspx

•

• Psychological• 　 　 ⇓• 　　　　　

Physical•

Peter 　 Trimmer (2012)

evolution?

Similar to Placebo

A switchthat kickinto actionthe immune system

why not evolve the ability to get better immediately on our own?

…to save energy. proven by ⇒ computer simulations

Ted Kaptchuk (2008)Acupuncture treatment for IBS

1, No treatment ⇒28%

Fake treatment 2, business-like

⇒44%3, warm and supportive 　 ⇒62%

Conclusion

Doctor as placebo

Thank you !