Healthcare SEO: What You Can and Cannot Write

Healthcare SEO is not standard SEO with a compliance checkbox bolted on at the end. Google classifies medical content as YMYL (Your Money or Your Life), applies its strictest E-E-A-T scrutiny to every page, and can manually demote or remove sites that contradict established clinical consensus. If you are building or managing a healthcare website, the rules governing what you write are set by two audiences simultaneously: Google’s quality raters and the FTC. Getting either wrong has real consequences.

Disclaimer: This article is B2B guidance for healthcare providers, founders, and builders. It is not medical advice. Specific compliance questions should be confirmed with qualified legal and clinical counsel familiar with your jurisdiction.

Why healthcare content is in a category of its own

Approximately 5% of all Google searches are health-related, which translates to roughly 70,000 healthcare-related searches every minute globally. Pew Research found that 77% of online health seekers start at a major search engine, and 80% of U.S. internet users have searched for health information online. That volume is exactly why Google introduced YMYL as a distinct content category: bad health information reaching millions of people causes measurable harm.

The Google Search Quality Rater Guidelines define YMYL topics as those where a low-quality page “could directly impact the health, financial stability, or safety of people.” Medical diagnosis, treatment options, prescription drugs, and mental health advice all fall squarely in this bucket. For YMYL content, the guidelines require the highest level of E-E-A-T: Experience, Expertise, Authoritativeness, and Trustworthiness. That is not a soft recommendation. Human quality raters score pages against this standard, and those scores feed into how Google calibrates its ranking algorithms.

When we worked with a multi-site clinic group redesigning their service pages, the first thing we audited was not keywords or technical performance. It was authorship. Every page describing a medical procedure had been written by a marketing agency with no clinical credentials listed anywhere. That is a textbook low E-E-A-T signal for a YMYL topic.

What E-E-A-T actually demands for medical content

E-E-A-T is not a single ranking factor. It is a framework Google uses to evaluate the overall trustworthiness of a page and the site behind it. For healthcare, each component has a specific meaning.

Experience means demonstrated first-hand knowledge. A physiotherapy clinic writing about a treatment should show that their practitioners have performed it, not just read about it. Patient testimonials, case notes (anonymised and consented), and clinical commentary from named staff all build experience signals.

Expertise for YMYL medical topics requires formal credentials. Google’s own guidance on creating helpful content is explicit that for health topics, the author must hold relevant professional qualifications or the content must carry a verified medical reviewer. A blog post about managing Type 2 diabetes written by a general content writer and reviewed by a registered endocrinologist is acceptable. The same post with no byline is not.

Authoritativeness is measured by how other authoritative sources treat your site. Backlinks from NHS pages, CDC citations, hospital networks, and professional medical bodies carry weight. Links from generic health news aggregators carry far less.

Trustworthiness is the foundation. Google’s content policies explicitly state: “We don’t allow content that contradicts or runs contrary to scientific or medical consensus and evidence-based best practices.” Violations can trigger manual removal or demotion in rankings.

The medical reviewer byline is not optional

For any page making clinical claims, a named medical reviewer is the minimum viable trust signal. The reviewer’s name should:

• Link to a verifiable professional profile (GMC, ABMS, NMC, or equivalent register)
• Carry a credential suffix (MD, DO, RN, PharmD, etc.)
• Show a review date that is current (outdated reviews on evolving clinical topics are a red flag)
• Appear in structured data using Schema.org Person markup so Google can parse it programmatically

We implement reviewer markup as part of the CMS template on every healthcare project we build, so no page can be published without a valid reviewer record. It removes the human error that causes compliance gaps at scale.

The Google algorithm risk: core updates and YMYL

Google’s March 2024 Core Update incorporated the Helpful Content System into its core ranking mechanism, with a stated goal of reducing unhelpful content by 40%. YMYL medical sites lacking clear expertise signals or trustworthy authorship were disproportionately affected.

The pattern we saw in client analytics after that update was consistent: service pages with no author attribution lost significant rankings. Blog posts that had cited only secondary summaries (health news sites rather than primary studies) dropped. Pages that had been republished without updating citations from 2019 and 2020 fell off the first page entirely.

The remedy is not a single fix. It is a content audit that checks every health-claim page against three questions:

1. Is there a named, credentialled author or reviewer?
2. Does every clinical claim trace to a primary source (WHO, CDC, NHS, NICE, FDA, or a peer-reviewed PubMed study)?
3. Is the information current relative to clinical guidelines?

If the answer to any of these is no, the page is a liability before it is an asset.

The AI Overview problem for healthcare publishers

The competitive landscape in healthcare search has changed sharply. BrightEdge tracked AI Overview coverage on healthcare keywords from December 2023 to December 2025: coverage grew from 59% to 89%, with treatment and procedure queries hitting 100% coverage.

A Seer Interactive study found that when AI Overviews appear on health-related searches, organic click-through rate drops by 61%, falling from 1.76% to 0.61%. WebFX’s analysis of 130,070 U.S. healthcare queries found that 66.9% of informational health queries now trigger an AI Overview, compared to only 35.3% of transactional queries, which means condition education pages are far more exposed to traffic loss than appointment booking pages.

The implication is direct: the only sustainable traffic strategy for healthcare publishers is to become the cited source inside the AI Overview. Google sources its AI Overview content from pages that score highest on E-E-A-T for the query. That means the same investment in authoritative authorship, primary source citations, and structured markup that protects your Google rankings is also the investment that gets you cited in AI answers.

This dynamic is part of the broader shift we cover in our guide to healthcare website design, where content architecture and technical trust signals need to work together from the first build.

What you cannot write: the FTC and absolute claims

Healthcare SEO is not just a Google problem. The Federal Trade Commission sets the legal floor for health advertising claims in the United States, and the same principles apply broadly in the UK, EU, and other markets through their respective advertising standards bodies.

The FTC’s December 2022 Health Products Compliance Guidance sets out the evidentiary standard required before any health claim can be made. The key rule: any claim that a product or service “cures, mitigates, treats, or prevents” a disease requires “competent and reliable scientific evidence,” defined as at minimum one well-controlled human clinical trial (RCT). Epidemiological studies, animal studies, anecdotal reports, and public health recommendations do not meet this bar.

In April 2023, the FTC sent Notices of Penalty Offenses to approximately 670 companies warning that unsubstantiated health claims could trigger civil penalties of up to $51,744 per violation under the FTC Act.

The categories of language that are off-limits without RCT-level evidence include:

• “Cures [condition]” or “eliminates [condition]”
• “100% safe” or “completely risk-free”
• “Guaranteed results” or “guaranteed to work”
• “Scientifically proven” when the supporting evidence is not a controlled trial
• “Clinically tested” without a link to the actual published study

These phrases are common in health marketing copy written by generalist agencies. When we audit a healthcare site’s content before an SEO engagement, we flag every instance of this language in the first pass.

Do and don’t: practical reference table

The sources Google trusts in healthcare

MedlinePlus from the National Library of Medicine publishes an evaluation checklist for health information that mirrors what Google’s quality raters look for: provider identity, funding transparency, expert review, and currency. If a page meets that checklist, it is broadly meeting Google’s E-E-A-T standard as well.

The primary source hierarchy for healthcare content citations, in rough order of authority:

1. WHO (World Health Organization) for global epidemiological data and clinical guidelines
2. CDC (Centers for Disease Control and Prevention) for U.S. public health data and disease statistics
3. NHS / NICE for UK clinical guidance and treatment protocols
4. FDA for drug approvals, device clearances, and safety communications
5. PubMed / peer-reviewed journals for clinical trial data and systematic reviews
6. National medical colleges and societies (e.g., AMA, BMA, RCGP) for specialty guidance

Secondary sources (health news sites, industry blogs, even WebMD) should be used only as entry points to locate the primary source, not as standalone citations. If you cite a statistic, the link should go to the original study or government dataset, not to an article that mentioned it.

This is a point where healthcare sites regularly lose ground to competitors. A clinic page that says “According to the NHS…” and links to the NHS source will always outperform a page that says the same thing without the link, or that links to a news article citing the NHS.

How this connects to site architecture

Healthcare SEO strategy does not live in the content team alone. The way a site is structured, how author and reviewer schema is implemented, and how citation links are handled technically all feed into trust signals. A good healthcare website design builds these as defaults into the CMS and component system, not as manual checks before each publish.

For early-stage healthcare startups trying to establish domain authority from scratch, the same strategic thinking applies to general startup SEO. We covered the foundation for that in our guide to SEO for startups, including how to prioritize topical clusters when a domain has limited authority.

Frequently asked questions

What is YMYL and why does it matter for healthcare websites?

YMYL stands for “Your Money or Your Life.” It is Google’s classification for content where inaccurate information could directly harm a reader’s health, finances, or safety. Medical diagnosis, treatment options, and drug information all qualify. Google applies its strictest E-E-A-T evaluation criteria to YMYL pages, meaning healthcare sites face higher ranking requirements than general websites. A page that would rank acceptably in a low-stakes niche will not meet the bar for a medical topic without strong authorship signals and authoritative citations.

Do I need a medical doctor to review my healthcare website content for SEO?

For pages making clinical claims (describing conditions, treatments, medications, or health risks), a named medical reviewer with verifiable credentials is the standard Google’s quality raters look for. The reviewer does not need to be on staff, but their credentials must be real, verifiable through a professional register, and attributed on the page with a review date. For general wellness or administrative content (booking instructions, practice hours), a clinical reviewer is less critical, but an overall clear editorial policy is still good practice.

What health claims are illegal to make on a website or in advertising?

In the United States, the FTC requires “competent and reliable scientific evidence” (defined as at minimum one well-controlled human RCT) before any claim that a product or service cures, mitigates, treats, or prevents a disease. Language like “cures,” “100% safe,” “guaranteed results,” and “scientifically proven” without a linked RCT is legally exposed. The FTC sent warnings to approximately 670 companies in April 2023, with potential civil penalties of up to $51,744 per violation. UK and EU advertisers face equivalent standards through the ASA and national medicines regulators.

How does Google penalize medical websites with misleading content?

Google can take two types of action. Algorithmic demotion occurs automatically when a site scores poorly on E-E-A-T signals during a core update. Manual action is a direct intervention by Google’s search quality team and is applied to sites that actively contradict medical consensus or make false health claims. Manual actions appear in Google Search Console and require a formal reconsideration request after the issues are resolved. Both types of action can produce dramatic traffic losses that are not recoverable without addressing the underlying content quality problems.

What sources should healthcare content cite to rank well on Google?

Google’s quality raters specifically check whether clinical claims trace back to authoritative primary sources. The recommended hierarchy is: WHO for global epidemiological data, CDC for U.S. public health statistics, NHS and NICE for UK clinical guidelines, FDA for drug and device information, and PubMed for peer-reviewed trial data. Linking directly to the primary source (not to a secondary article that mentioned it) is both the correct editorial practice and the correct SEO practice.

Why did my healthcare website lose traffic after a Google core update?

The most common cause we find on audit is one or more of the following: missing author or reviewer attribution on clinical pages, clinical claims that cite secondary sources rather than primary ones, outdated content that contradicts current guidelines, or thin pages that aggregate health information without adding original clinical value. The March 2024 Core Update specifically targeted unhelpful medical content, with Google stating a goal of reducing such content in results by 40%. Recovery requires a systematic content audit and remediation, not a technical fix.

What is E-E-A-T and how does it apply to medical and health content?

E-E-A-T stands for Experience, Expertise, Authoritativeness, and Trustworthiness. It is the framework Google’s quality raters use to evaluate page quality, defined in the Search Quality Rater Guidelines. For medical content, Experience means demonstrable first-hand clinical knowledge, Expertise means formal professional credentials, Authoritativeness means recognition by other trusted health institutions, and Trustworthiness means consistent alignment with clinical consensus. All four components are evaluated together, and a significant weakness in any one of them can pull down the overall assessment of a YMYL page.

Working with a team that understands the rules

Healthcare SEO is one of the few areas where getting the content strategy wrong carries both business risk (lost rankings) and legal risk (FTC enforcement). We have found that most healthcare sites we audit have at least one category of exposure: either missing clinical reviewer attribution, outdated citations, or claim language that would not survive FTC scrutiny.

If you are building a new healthcare site, replatforming an existing one, or trying to understand why your traffic dropped after the last core update, we can do a structured content and technical audit before you invest in new content production. We are a fractional CTO and engineering team that works with healthcare founders and clinic operators on exactly this kind of problem.

Book a free consultation with Sparkable and we will tell you specifically what we find, not a sales pitch.