Quick Answer
Check who runs a health website in its “About Us” section, favour sites run by government agencies, medical schools, or established professional and nonprofit organisations, and look for a clear publication or last-reviewed date along with cited sources. No online information should replace advice from your own healthcare provider, but bringing what you find to that conversation is genuinely useful.
Why Evaluating Health Information Matters
Health information is everywhere, in newspapers, on social media, and across countless websites, but not all of it is accurate or current. Some sources are excellent, others are outdated, biased, or written to sell a product rather than genuinely inform. Learning to tell the difference protects you from making decisions based on poor information.
Step 1: Check Who Runs the Site
Look for an “About Us” page, which should clearly identify the individual, company, or organisation responsible for the content. If you cannot find who runs a site, treat that as a warning sign rather than a minor omission, since trustworthy sites are generally transparent about their ownership and funding.
Which Types of Websites Tend to Be Reliable
| Source Type | General Reliability |
|---|---|
| Federal or national government health agencies | Generally highly reliable |
| Medical schools and universities | Generally highly reliable |
| Large professional or nonprofit medical organisations | Generally reliable |
| Commercial sites selling a product or service | Evaluate with extra caution |
| Personal blogs or unattributed content | Generally not reliable on their own |
Step 2: Look at the Web Address
Websites ending in .gov or .edu tend to be more reliable than .com or .org sites, since these domains are restricted to government and educational institutions. This is not an absolute rule, plenty of .org and .com sites publish excellent health content, but it is a useful first filter, particularly combined with checking who actually runs the site.
Step 3: Understand the Site’s Purpose
Ask whether the site exists to inform and explain, or to sell a product or service. Sites funded by advertising or product sales are not automatically untrustworthy, but their content deserves closer scrutiny, and health information should ideally be kept separate from any advertising on the page.
Step 4: Check the Publication or Review Date
Reputable health sites display when content was written or last reviewed, often at the bottom of the page. Medical guidance changes as research develops, so an article with no visible date, or one that has clearly not been updated in years, should be treated with more caution, particularly on fast-evolving topics.
Step 5: Look for Cited Sources
Trustworthy health information is based on evidence, not opinion or anecdote, and should reference where that evidence came from. If a site cites a specific study, it is worth checking that the original research actually supports the claim being made, since studies are sometimes summarised in a misleading way.
Step 6: Check the Author’s Credentials
Identify who wrote the content and whether they have relevant medical or scientific training. Many reputable sites also note whether an article was reviewed by a medical professional or editorial board before publication, which adds another layer of quality control.
Watch for Red Flags
- No visible author, editorial board, or contact information anywhere on the site
- Claims that sound too dramatic or too good to be true, particularly around miracle cures or guaranteed results
- Numerous broken links or pages that clearly have not been maintained
- Heavy reliance on personal testimonials rather than cited evidence
- A site that assumes an endorsement simply because it links to a trustworthy source elsewhere
Trusted Starting Points
MedlinePlus, run by the US National Library of Medicine, offers dependable consumer health information across more than a thousand topics and a free tutorial on evaluating health information yourself. Other reliable starting points include national health service websites, established medical schools, and recognised professional bodies within a specific specialty.
Looking for International Consensus
For significant health decisions, comparing guidance across multiple independent institutions and countries adds an extra layer of confidence. Broad agreement among unrelated scientific bodies with different funding sources is a stronger signal than a single source alone, however reputable that source seems.
Bringing What You Find to Your Doctor
No online information, however accurate, should replace an assessment from a qualified healthcare professional who understands your specific situation. Most healthcare providers welcome patients who do their own research and bring genuine questions to appointments, and many are happy to comment on whether a specific source you found is one they would trust.
Frequently Asked Questions
Are .gov and .edu websites always more trustworthy than .com sites?
Generally more reliable due to domain restrictions, though plenty of .com and .org sites also publish excellent, evidence-based health content, so checking authorship still matters.
Why does the publication date on a health article matter?
Medical guidance changes as research develops, so an undated or outdated article may no longer reflect current best practice.
Should I trust a health website that links to a reputable source?
Not automatically; a link to a trustworthy source does not mean that site endorses or supports the linking website’s other content.
What is a good first step for checking a specific health claim?
Look for the original research the claim is based on, since studies are sometimes summarised in a misleading or oversimplified way.
Can online health information replace seeing a doctor?
No, online research is a useful tool for becoming informed, but it should complement, not replace, guidance from a qualified healthcare provider.