Is the information factual, not opinion?
Where arguments are given, are they based on strong evidence and good logic?
How valid is the research that is the source?
Are additional electronic and print sources referenced to complement or support the material presented?

Is the information written by a specific author or an organisation?  Are there clues?
Is the author's or organisation's name given?
Are her/his qualifications specified?
Is the author affiliated with a reputable institution or organization?
Who is sponsoring this website?  Look at the url for clues (.edu is an U.S. educational institution,; gov is a government site; com is a commercial site)

What audience is the Web site designed for?
Is it too basic or too technical for your needs?

Health information changes quickly. Is this web site current?
Is the date of the most recent update given?