National Center for Complementary and Alternative Medicine (NCCAM)

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Finding and Evaluating Online Resources on Complementary Health Approaches

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The number of Web sites offering health-related resources—including information about complementary health approaches (often called complementary and alternative medicine)—grows every day. Social media sites have also become an important source of online health information for some people. Many online health resources are useful, but others may present information that is inaccurate or misleading, so it’s important to find sources you can trust and to know how to evaluate their content. This guide provides help for finding reliable Web sites and outlines things to consider in evaluating health information from Web sites and social media sources.

Key Facts

Not all online health information is accurate. Be cautious when you evaluate health information on the Internet, especially if the site

  • Is selling something
  • Includes outdated information
  • Makes excessive claims for what a product can do
  • Is sponsored by an organization whose goals differ from yours.

Keep in Mind

Don’t rely exclusively on online resources when making decisions about your health. If you are considering a complementary health approach, discuss it with your health care provider.

Checking Out a Health Web Site: Five Quick Questions

If you’re visiting a health Web site for the first time, these five quick questions can help you decide whether the site is a helpful resource.

Who? Who runs the Web site? Can you trust them?

What? What does the site say? Do its claims seem too good to be true?

When? When was the information posted or reviewed? Is it up-to-date?

Where? Where did the information come from? Is it based on scientific research?

Why? Why does the site exist? Is it selling something?

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Finding Health Information on the Internet: How to Start

You can find accurate health information quickly and easily if you start with one of these organized collections of high-quality, up-to-date resources:

  • MedlinePlus, sponsored by the National Library of Medicine, which is part of the National Institutes of Health (NIH)
  • healthfinder.gov, sponsored by the Office of Disease Prevention and Health Promotion in the U.S. Department of Health and Human Services.

If you’re specifically looking for information about complementary health approaches:

  • You can use the National Center for Complementary and Alternative Medicine (NCCAM) Web site as a starting point. NCCAM is the Federal Government’s lead agency for scientific research on the diverse medical and health care systems, practices, and products that are not generally considered part of conventional medicine.
  • Follow along with NCCAM via its official Facebook and Twitter accounts. These accounts are updated and managed by NCCAM staff and provide the latest resources on a variety of complementary health approaches.
  • For information on dietary supplements, visit both the NCCAM Web site and the Web site of NIH’s Office of Dietary Supplements (ODS) (ods.od.nih.gov).
  • For additional resources on complementary health approaches, visit NCCAM’s Links to Other Organizations page. All of the resources listed there come from Federal agencies or the World Health Organization; they all provide reliable information.

Talk to Your Health Care Provider About Complementary Health Approaches

If you are considering a complementary health approach and find information on the Web, it’s a good idea to share the information with all your health care providers and get their opinions. For tips about talking with your providers about complementary approaches, see NCCAM’s Time to Talk campaign.

Health Information in Social Media

About one-third of American adults use social networking sites, such as Facebook or Twitter, as a source of health information.

Here are two ideas that may help you evaluate health information in social media:

  • Evaluate the sponsor’s Web site. Health information presented on social networking sites is often very brief, and details about the sponsoring organization may be very limited. Fortunately, organizations with social media accounts usually have Web sites as well, where they discuss the same health topics at greater length and provide additional details about themselves and their policies. You can usually find a link to the Web site in the organization’s profile on the social networking site. On Twitter, it’s usually in the header above the tweets; on Facebook, it’s usually in the About section. Once you find the link, you can visit the Web site and evaluate it just as you would any other Web site, using the ideas in this guide.
  • Make sure the social media account is authentic. Special tools can help you verify that social media accounts are what they claim to be. Some social networking sites have symbols that indicate that an account has been verified. For example, Twitter uses a blue badge. The Federal Government has a tool to verify social media accounts that claim to belong to Federal agencies: www.usa.gov/Contact/verify-social-media.shtml. Another way to find out whether an account is real is to go to the organization’s Web site and look for a link to the social networking site. That link should take you to the organization’s legitimate account. Additionally, many organizations will include the fact that the platform is “official” in their information. Either in the Twitter biography or Facebook About section, many organizations state “the official Facebook/Twitter page of [name of organization].”

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Questions To Ask When Evaluating a Health-Related Web Site

Your search for online health information may start on a known, trusted site, but after following several links, you may find yourself on an unfamiliar site. Can you trust this site? Here are some key questions you need to ask.

Who runs and pays for the Web site?

Any reliable health-related Web site should make it easy for you to learn who is responsible for the site. For example, on the NCCAM Web site, each major page clearly identifies NCCAM and, because NCCAM is part of NIH, provides a link to the NIH homepage. If it isn’t obvious who runs the Web site, look for a link on the homepage to an “About This Site” page.

You can also learn about who runs a Web site by looking at the letters at the end of its Web address. For example, Web addresses (such as NCCAM’s) that end in “.gov” mean it’s a government-sponsored site; “.edu” indicates an educational institution, “.org” a noncommercial organization, and “.com” a commercial organization.

You can trust sites with “.gov” addresses. You can also trust sites with “.edu” addresses if they are produced by the educational institution. Personal pages of individuals at an educational institution may not be trustworthy, even though they have .edu addresses. The presence of “.org” in an address does not guarantee that a site is reputable; there have been instances where phony “.org” sites were set up to mislead consumers. Also, some legitimate “.org” sites belong to organizations that promote a specific agenda; their content may be biased.

You should know how the site supports itself. Is it funded by the organization that sponsors it? Does it sell advertising? Is it sponsored by a company that sells dietary supplements, drugs, or other products or services? The source of funding can affect what content is presented, how it is presented, and what the site owners want to accomplish.

What is the purpose of the site?

The site’s purpose is related to who runs and pays for it. The About This Site page should include a clear statement of purpose. To be sure you are getting reliable information, you should confirm information that you find on sales sites by consulting other, independent sites where no products are sold.

What is the source of the information?

Many health/medical sites post information collected from other Web sites or sources. If the person or organization in charge of the site did not create the material, the original source should be clearly identified. For example, the Health Topics A–Z page on the NCCAM site provides links to some documents that NCCAM did not create; in those instances, the source of the documents is always identified.

What is the basis of the information?

In addition to identifying the source of the material you are reading, the site should describe the evidence (such as articles in medical journals) that the material is based on. Also, opinions or advice should be clearly set apart from information that is “evidence-based” (that is, based on research results). For example, if a site discusses health benefits people can expect from a treatment, look for references to scientific research that clearly support what is said. Keep in mind that testimonials, anecdotes, unsupported claims, and opinions are not the same as objective, evidence-based information.

Is the information reviewed?

You can be more confident in the quality of medical information on a Web site if people with credible professional and scientific qualifications review the material before it is posted. Some Web sites have an editorial board that reviews content. Others put the names and credentials of the individuals who reviewed a Web page in an Acknowledgments section near the end of the page.

How current is the information?

Some types of outdated medical information can be misleading or even dangerous. Responsible health Web sites review and update much of their content on a regular basis, especially informational content such as fact sheets and lists of frequently asked questions (FAQs). Other types of site content, however, such as news reports or summaries of scientific meetings, may never be updated; their purpose is to describe an event, rather than to provide the most up-to-date information on a topic.

To find out whether information on a Web page is old or new, look for a date on the page (it’s often near the bottom).

What is the site’s policy about linking to other sites?

Web sites usually have a policy about establishing links to other sites. Some sites take a conservative approach and don’t link to any other sites. Some link to any site that asks or pays for a link. Others only link to sites that have met certain criteria. You may be able to find information on the site about its linking policy. (For example, you can find information about NCCAM’s linking policy on the NCCAM Web Site 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.

How does the site handle personal information?

Many Web sites track visitors’ paths to determine what pages are being viewed. A health Web site may ask you to “subscribe” or “become a member.” In some cases, this may be so that it can collect a user fee or select information for you that is relevant to your concerns. In all cases, this will give the site personal information about you.

Any credible site asking for this kind of information should tell you exactly what it will and will not do with it. Many commercial sites sell “aggregate” (collected) data about their users to other companies—information such as what percentage of their users are women older than 40. In some cases, they may collect and reuse information that is “personally identifiable,” such as your ZIP Code, gender, and birth date. Be sure to read any privacy policy or similar language on the site, and don’t sign up for anything you don’t fully understand. You can find NCCAM’s privacy policy.

How does the site manage interactions with users?

You should always be able to contact the site owner if you run across problems or have questions or feedback. If the site hosts online discussion areas (forums or message boards), it should explain the terms of using this service. If the site is affiliated with social networking sites such as Twitter, Facebook, or YouTube, it should explain the terms of using them. Look for a social media comments policy on the Web site. NCCAM’s social media comments policy is here: nccam.nih.gov/tools/commentpolicy.htm. Spend some time reading what has been posted before joining in, to see whether you feel comfortable with the environment. You may also be able to review past discussions. For example, NCCAM has an archive of its Twitter chats here: nccam.nih.gov/news/events/twitterchat/archive.

Are You Reading Real Online News or Just Advertising?

In April 2011, the Federal Trade Commission warned the public about fake online news sites promoting an acai berry weight-loss product. On a typical fake “news” site, a story described an investigation in which a reporter used the product for several weeks, with “dramatic” results. The site looked real, but it was actually an advertisement. Everything was fake: there was no reporter, no news organization, and no investigation. The only real things were the links to a sales site that appeared in the story and elsewhere on the Web page. Similar fake news sites have promoted other products, including work-at-home opportunities and debt reduction plans.

You should suspect that a news site may be fake if it:

  • Endorses a product. Real news organizations generally don’t do this.
  • Only quotes people who say good things about the product.
  • Presents research findings that seem too good to be true. (If something seems too good to be true, it usually is.)
  • Contains links to a sales site.
  • Includes positive reader comments only, and you can’t add a comment of your own.

How To Protect Yourself

If you suspect that a news site is fake, look for a disclaimer somewhere on the page (often in small print) that indicates that the site is an advertisement. Also, don’t rely on Internet news reports when making important decisions about your health. If you are considering a health product described in the news, discuss it with your health care provider.

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For More Information

NCCAM Clearinghouse

The NCCAM Clearinghouse provides information on NCCAM and complementary health approaches, including publications and searches of Federal databases of scientific and medical literature. The Clearinghouse does not provide medical advice, treatment recommendations, or referrals to practitioners.

Toll-free in the U.S.: 
1-888-644-6226
TTY (for deaf and hard-of-hearing callers): 
1-866-464-3615
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Key References

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This publication is not copyrighted and is in the public domain. Duplication is encouraged.

NCCAM has provided this material for your information. It is not intended to substitute for the medical expertise and advice of your primary health care provider. We encourage you to discuss any decisions about treatment or care with your health care provider. The mention of any product, service, or therapy is not an endorsement by NCCAM.

* Note: PDF files require a viewer such as the free Adobe Reader.

NCCAM Pub No.: 
D337
Date Created: 
December 2006
Last Updated: 
July 2013