Health misinformation is exploding online — and government and health groups shoulder some of the blame

Credit: NEJM
Credit: NEJM

In the new study, published in JAMA Network Open, researchers scrutinized advertising revenue from 11 news sites flagged for spreading health misinformation, including false claims about the safety of COVID-19 vaccines.

About 10% of the more than $336 million that the sites made from advertising from 2021 to 2024 came from health groups, including government agencies such as the Centers for Disease Control and Prevention (CDC); drug makers such Pfizer and Eli Lilly; and nonprofits such as the American Heart Association (AHA) and Alzheimer’s Association.

News websites with a history of spreading health misinformation, including NewsMax and ZeroHedge, “are directly at odds with the missions of these organizations,” said Neeraj Patel, a fourth-year medical student at the Yale School of Medicine and first author of the new paper.

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The misinformation industry earns $2.6 billion a year in estimated advertising revenue, according to a 2021 report from NewsGuard, which deploys trained journalists to track online misinformation …. For every $2.16 in digital ad revenue sent to legitimate newspapers, US advertisers send $1 to misinformation websites, according to the report.

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