What Is Fact Density?

Fact density is the number of specific, checkable facts a page contains compared with its length. For a health practice, a dense page states what a service includes, how long it takes, who provides it, where it happens and what it costs. A thin page repeats general phrases like "personalized care" and "comprehensive approach" that tell a patient nothing they can verify.

How fact density works

Search engines and AI tools are looking for the page that answers a question better than the others. When every clinic writes the same adjectives, a page full of adjectives gives a system no reason to choose it. A page of specifics gives it something to quote and compare.

A useful way to see this is to sort sentences into three kinds.

• Facts. A stranger could check or repeat them. "The first visit is 90 minutes with a physician."
• Claims. They sound like facts and cannot be checked. "We deliver outstanding results."
• Mood. They set a tone and carry no information. "We are passionate about your health."

Mood has a place, and it should not be most of the page. A dense page might be half facts and the rest explanation, with a few warm lines.

Research gives some support to the idea. The 2023 GEO study tested ways of rewriting source pages for generative search and measured how visible each version was in the answers. Adding statistics, quotations or citations raised measured visibility by up to about 40% on one of its metrics, while keyword stuffing, the old SEO habit of repeating a phrase, gave little to no improvement. The authors worked in a research setting with their own scoring, so treat it as a direction and not a forecast. It suggests that specific, sourced detail is used more than repeated keywords.

Google's guidance points the same way from a different angle. Its helpful content page asks whether content provides original information, reporting, research or analysis. A page that repeats the generic claims found on every competitor's site has little of that. A page that describes your actual process, your actual team and your actual prices has all of it. This overlaps with E-E-A-T, since specific first-hand detail is also how a reader judges that the author knows the work.

Density also interacts with other habits in this glossary. A quotable sentence is the unit where one fact lives.

Extractability decides whether a machine can reach it.

Answer-first writing decides where it sits on the page.

The limit is truth. Facts must be accurate and current, which means a price page that is out of date does harm. For health claims in particular, the FTC says they need competent and reliable scientific evidence. That is why density means facts about how your practice operates, and not impressive-sounding statistics.

Consistency is part of density. In my view, ten facts that conflict are worse than five that agree. If your pricing page gives one fee and a blog post gives another, a patient and a machine both have to guess which is right, and some wrong answers about practices start this way. Put the year next to every statistic or date, and keep the source beside the claim, since an old number with no date is worse than no number. Finally, resist the urge to pad the count with superlatives such as "the best" or "most trusted". They look like facts and cannot be checked. Facts also go stale, so build a habit of refreshing the ones that change, such as prices and hours.

Example: fact density at a health practice

This example is illustrative, not a transcript. Two functional medicine clinics describe a first visit.

Clinic A writes "We take a personalized, in-depth approach to your health." There is no length, no provider, no content, no next step. A patient comparing clinics learns nothing, and an AI tool summarizing it has nothing to repeat.

Clinic B writes "The first visit is 90 minutes with a physician. It covers your full history, a review of your prior labs and a plan for any new testing. The visit costs a flat fee, and the clinic is in Denver near the light rail." Every sentence can be checked. A patient can compare it with another clinic, and a system can quote any sentence by itself.

Consider a second pair. A med spa page that says "advanced skin rejuvenation" gives a reader and a machine nothing to hold. A page that says a consultation takes 30 minutes, names the nurse injector, lists the three treatments offered and gives the hours can be summarized in one breath. For Clinic B, the work was an hour with its physician and its front desk, collecting the answers. Clinic B did not invent anything. It wrote down what already happened.

On the question of which pages a system draws from, MGMA analyzed 33,340 ChatGPT citation events across 200 practices in May 2026, and practice-owned websites made up about 23% of citations. The author, who runs a commercial AI growth service, defines on-site content as procedure pages, physician bios, location pages and structured data, and says that more entity-rich pages give ChatGPT more URLs to ground on. Specific pages create more of those URLs. It is one vendor's reading of one platform, so use it as a prompt to write more specific pages, not as a promise.

How to check yours in 60 seconds

1. Open a service page and a highlighter, or paste the text into a note.
2. Mark every sentence that contains something a stranger could check, such as a time, a number, a name, a location, a step or an included item.
3. Count marked sentences against total sentences.
4. If most sentences are unmarked, the page is thin.

Try it on your homepage too, and on one page for each provider. Pages written in a hurry tend to be the thinnest on a practice site, so count them first.

What to do about it

1. For each service page, list the eight questions a patient asks before booking (cost, length, what is included, who does it, preparation, aftercare, location, how to book).
2. Answer each one in a single plain sentence on the page.
3. Add names and credentials of the actual providers, where they are willing to be named.
4. Replace every vague adjective with the fact behind it. "Fast results" becomes the real timeline range you can support.
5. Only state facts you can verify and keep current. Update the page whenever prices or procedures change.
6. Keep a short source note for every number, so you can show where it came from if asked.
7. Re-run the sentence count after editing, and aim for a page where each paragraph holds at least one real detail.
8. Ask the front desk what patients ask most on the phone, and put those answers on the page.