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[The placebo effect--a biochemical basis for a psychosomatic phenomenon]
U Nitzan1, U Hersco-Levy, P Lichtenberg
1Haddasah Medical School, Jerusalem.
Harefuah
|April 12, 2002
Summary
The placebo effect, driven by neurochemical mechanisms, plays a significant role in medicine and research. Understanding this effect is crucial for physicians and scientists in clinical practice and drug development.
Area of Science:
- Neuroscience
- Pharmacology
- Medical Research
Context:
- The placebo effect, historically sidelined by rationalism, has seen renewed scientific interest since 1950.
- Its presence in clinical settings and relevance in pharmacological research are increasingly recognized.
Purpose:
- To review decade-long research on the neurochemical mechanisms of the placebo effect.
- To highlight the critical role of placebo in medicine and pharmacological studies.
- To increase awareness among physicians and scientists regarding the placebo phenomenon.
Summary:
- The existence of a placebo effect is well-established in groups over time.
- Neurochemical involvement is supported by literature, with specific chemicals influencing the analgesic placebo effect.
- Key neurochemicals implicated include cholecystokinin (CCK), naloxone, proglumide, and endorphins.
Impact:
- Informing clinical practice and enhancing the design of pharmacological research.
- Providing a scientific basis for understanding placebo responses.
- Guiding future research into the neurochemical pathways of placebo analgesia.