Trust your doctor, not Wikipedia, say scientists

Wikipedia, the online encyclopaedia, contains errors in nine out of 10 of its health entries, and should be treated with caution, a study has said.

Scientists in the US compared entries about conditions such as heart disease, lung cancer, depression and diabetes with peer-reviewed medical research.

They said most articles in Wikipedia contained "many errors".

Wikimedia UK, its British arm, said it was "crucial" that people with health concerns spoke to their GP first.

The online encyclopaedia is a charity, and has 30 million articles in 285 languages.

It can be edited by anybody, but many volunteers from the medical profession check the pages for inaccuracies, said Wikimedia UK.

The open-access nature has "raised concern" among doctors about its reliability, as it is the sixth most popular site on the internet, the US authors of the research, published in the Journal of the American Osteopathic Association, said.

Up to 70% of physicians and medical students use the tool, they say.

The 10 researchers across America looked at online articles for 10 of the "most costly" conditions in the US, including osteoarthritis, back problems and asthma.

They printed off the articles on 25 April 2012 to analyse, and discovered that 90% of the entries made statements that contradicted latest medical research.

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