Bad Science: A Guide to Critical Thinking in Medicine

Ben Goldacre's Bad Science (2008) is a comprehensive critique of pseudoscience, flawed research, and misinformation in medicine and media. The British doctor and science journalist aims to educate readers on thinking critically about scientific claims, using wit and detailed examples to expose dangerous misconceptions.

Key Concepts

Pseudoscience in Everyday Products

Detox foot baths that turn water brown due to rust, not "toxins"
Beauty products with meaningless scientific jargon like "salmon roe DNA"
Companies exploit scientific language to appear credible without evidence

Homeopathy and Magical Thinking

Extreme dilutions (30C) contain virtually no active molecules
Contradicts basic chemistry and dose-response principles
Controlled trials show no benefit beyond placebo effect

The Placebo Effect and Fair Trials

Belief alone can produce symptom improvement
Proper testing requires randomization, blinding, and control groups
Without fair trials, natural recovery and placebo effects mislead us

Cognitive Biases

Confirmation bias makes us remember supporting evidence
Pattern-seeking leads to false correlations
Authority bias causes trust in unqualified "experts"

Media Failures and Real Consequences

MMR vaccine scare based on fraudulent study caused disease outbreaks
HIV/AIDS denial in South Africa led to 330,000+ preventable deaths
False balance gives equal weight to fringe and scientific views

Goldacre's ultimate message: demand evidence, understand scientific methods, and don't be fooled by jargon or hype—bad science can literally kill.