Know the Science: Finding Health Information Online

What’s the Site’s Policy About Linking to Other Sites?
Some sites don’t link to any other sites, some link to any site that asks or pays for a link, and others link only to sites that meet certain criteria. You may be able to find information on the site about its linking policy. (For example, NCCIH’s linking policy is available on the NCCIH Website Information and Policies page.)
Unless the site’s linking policy is strict, don’t assume that the sites that it links to are reliable. You should evaluate the linked sites just as you would any other site that you’re visiting for the first time.