Google has removed some of its artificial intelligence health summaries after a Guardian investigation found people were being put at risk of harm by false and misleading information.

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In one case that experts described as “dangerous” and “alarming”, Google provided bogus information about crucial liver function tests that could leave people with serious liver disease wrongly thinking they were healthy.

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After the investigation, the company has removed AI Overviews for the search terms “what is the normal range for liver blood tests” and “what is the normal range for liver function tests”.

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The Guardian found that typing slight variations of the original queries into Google, such as “lft reference range” or “lft test reference range”, prompted AI Overviews. That was a big worry, Hebditch said.

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Google, which has a 91% share of the global search engine market, said it was reviewing the new examples provided to it by the Guardian.