Intended for healthcare professionals


Nearly half of Americans believe in at least one medical conspiracy theory, survey finds

BMJ 2014; 348 doi: (Published 20 March 2014) Cite this as: BMJ 2014;348:g2277
  1. Michael McCarthy
  1. 1Seattle

Nearly half (49%) of people in the United States hold with at least one medical conspiracy theory, and 18% believe in three or more, a new study has found.1

In the study, researchers conducted an internet survey of 1351 US adults, asking whether they had heard of six popular medical conspiracy theories and the level of their agreement with each of the theories. Results were weighted to provide a representative sample of the population and to have the …

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