Where The Wild Thoughts Are Why do placebos work?
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Oct 6, 2025 
Ted Kaptchuk, Harvard professor who pioneered placebo research after training in Chinese medicine. He discusses how ritual, clinician warmth and the therapeutic encounter shape symptom relief. He explains open‑label placebos, how placebos alter symptom perception but not objective disease, and why these effects matter for chronic pain and other hard-to-treat conditions.
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Placebo Is The Ritual Not The Pill
- Placebo effects arise from the treatment context and ritual, not from inert substances themselves.
- Ted Kaptchuk showed placebo responses change with doctor-patient warmth, procedure type, and attention, behaving like dose-dependent drugs.
Asthma Trial Showed Placebo Changes Feeling Not Function
- In a large asthma trial Ted found objective lung function improved only with albuterol while subjective symptoms improved equally with real drug and placebos.
- 50% improved by drug on FEV1 but ~49% reported feeling better on fake albuterol and fake acupuncture.
Placebo Targets Symptom Perception Not Disease
- Placebos primarily alter subjective, self-reported symptoms and not objective pathology.
- Neurobiology underlies symptom change via neurotransmitters and brain regions that regulate perception and symptom salience.
