Something Weird Is Going On With Placebos
Summary
Hannah Fry and Michael Stevens explore the growing effectiveness of placebos, particularly in the US, driven by longer clinical trials and pharmaceutical marketing. They discuss the "Tinkerbell effect," where belief enhances outcomes, and the "reverse Tinkerbell effect," where confidence in safety leads to riskier behavior. The episode covers the distinction between placebos and nocebos, the power of medical ritual, and why "doing something" often matters more than the specific treatment.
Topics discussed
Intro: The rising effectiveness of placebos in America
Sponsor segments: Cancer Research UK, Carvana, LinkedIn
Defining placebo vs. varum and the McGill study
Data: Pain relief drugs losing efficacy to placebos
Antidepressants: 80% of efficacy attributed to placebo
Why US placebos are stronger: Rituals and advertising
Pain as a brain-constructed reality and signal for help
The 'doing something' effect and social support
Harvard migraine study: Uncertainty and hypervigilance
The ethics of prescribing placebos and lifestyle changes
Prostate and thyroid cancer: The cost of 'doing something'
The role of medical ritual, glamour, and presentation
Sponsor segment: Checkout.com
Nocebo effect and the fake laser pain experiment
The Tinkerbell effect: Belief creating reality in schools
Reverse Tinkerbell: Safety, traffic lights, and fake controls
TV production tricks: Strawberry filters and mayonnaise commercials
Conclusion: Stock markets and the power of collective belief
Sponsor segment: Apple Watch
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