Emerging challenges in using health information from the internet

In 2000, about 350 million adults used the internet and people increasingly take articles from websites to medical appointments. The quality and safety of websites vary widely and some users are reluctant to access mainstream sites. People are vulnerable to misinformation and exploitation: there is evidence that online purchases have caused morbidity and mortality. This paper reviews the current evidence on the dissemination of health information on the internet and the various strategies that are developing to assess and screen site quality. Such strategies include 'quality assurance' marking, specially designed search engines, and operational criteria for individuals to apply to sites. It also discusses the medical community's roles and responsibilities in relation to this burgeoning area.