MEDICIDEAS • PRACTICAL HEALTH LITERACY

How to Evaluate Health Information Online: A Practical Checklist

Online health claims can sound convincing long before they have earned your confidence. This practical checklist helps you slow down, ask sharper questions, and decide what information deserves a closer look.

THE CHECKLIST

Seven questions to ask before you trust a health claim

Who wrote it — and what are their credentials? Look for a clear author, a relevant background, and a way to understand the source’s perspective.

When was it published or updated? Older material is not automatically wrong, but fast-moving topics may need more current context.

Can you find the original source behind the claim? Prefer material that links clearly to studies, official reports, or other primary documents rather than repeating a headline.

Does it distinguish evidence from testimonials? A personal story may be meaningful to the person sharing it, but it cannot by itself establish a general result.

Is there something to sell, promote, or defend? Funding, sponsorship, and affiliations do not automatically invalidate a claim, but they are useful context.

Are absolute and relative risk kept separate? “Cuts risk by 50%” sounds large, but the practical meaning depends on the starting risk and who was studied.

Would this be a good question for a qualified professional who knows your situation? Online information can inform a conversation, but it cannot understand your full circumstances.

WORKED EXAMPLE

When a page says “clinically proven”

Pause before treating the phrase as a conclusion. Ask: Proven for whom, compared with what, and based on which source? Look for a link to the underlying material, check whether the page describes limits, and notice if the claim is paired with a product offer. This does not tell you whether a product is right for anyone; it simply turns a vague promise into questions you can examine.

Signals that deserve attention

Red flags

• No author, date, or sources
• Miracle language or guaranteed outcomes
• Testimonials presented as proof
• Pressure to buy immediately
• Important details hidden behind vague claims

Green flags

• Clear authorship and publication details
• Direct links to original material
• Specific language about what is known
• Funding or affiliations explained
• Limits and unanswered questions acknowledged

Uncertainty is normal

Good information does not always offer a neat answer. Responsible sources make room for what is not yet known, explain where findings may not apply, and avoid turning every question into a certainty. That is a sign of care, not weakness.

EDUCATIONAL INFORMATION ONLY—NOT A SUBSTITUTE FOR PERSONAL MEDICAL ADVICE.

Use this checklist to evaluate information, not to make personal health decisions. If you have questions about your own health situation, consult a qualified professional.

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