Patient education brochures work best at a 5th to 6th grade reading level. This article explains why, how to measure readability with free formulas, how to rewrite dense medical text, and how to publish accessible digital brochures patients can zoom, share and revisit.
Most patient brochures are written for readers who do not exist. The average adult in the United States reads at about an 8th grade level, yet a large share of hospital handouts are written at a 10th to 12th grade level. The safe answer to the question of reading level is simple: aim for 6th grade or lower, and test every draft before it reaches a waiting room. If you publish your brochures digitally, tools like Flipbooks AI make it easy to keep the text large, searchable and easy to update when you revise the wording.
This article gives you the target, the reasoning behind it, and a repeatable process for hitting it without making your content sound childish.
Major health bodies point in the same direction. The National Institutes of Health, the American Medical Association and the Centers for Disease Control and Prevention all recommend that patient materials sit between a 5th and 6th grade reading level, and some suggest going lower for high-risk topics such as medication dosing or discharge instructions.
That recommendation is not about intelligence. It is about cognitive load. A person who is frightened, in pain, tired or distracted reads several grade levels below their normal ability. A college graduate holding a new cancer diagnosis does not read like they do on a quiet Sunday.
💡 Pro tip: Treat 6th grade as a ceiling, not a floor. A 4th or 5th grade score on a medication instruction sheet is a good result, not a failure.
| Source | Typical recommendation | Notes |
|---|---|---|
| NIH | 6th to 7th grade | General public materials |
| CDC | 6th to 8th grade, simpler is better | Plain language guidance |
| AMA | 6th grade | Patient handouts |
| Health literacy experts | 5th grade | High-risk or low-literacy audiences |
| Average hospital handout | 10th to 12th grade | The gap you are trying to close |
Clinicians write the way they were trained to write. Medical school rewards precise, technical vocabulary, and that habit slips into patient materials. A sentence like "Administer the medication twice daily with food to mitigate gastrointestinal adverse effects" is perfectly accurate and nearly useless to many readers.
Poor readability has real clinical consequences. Patients who cannot follow instructions skip doses, miss follow-up visits, misread warning signs and return to the hospital more often.
Roughly nine in ten adults struggle to use everyday health information when it is full of jargon, according to national literacy surveys. This includes people with college degrees, people reading in a second language, and older adults whose vision makes small type hard to read.
Consider who actually picks up a brochure:
⚠️ Warning: A brochure that looks professional but reads at a 12th grade level can create false confidence for your team. The patient nods, takes the handout home and never uses it.
The practical costs include repeat phone calls to nurses, avoidable readmissions, lower satisfaction scores and, in the worst cases, medication errors.
You cannot fix what you do not measure. Several free formulas estimate grade level from sentence length and word complexity.
| Formula | What it measures | Best for | Target score |
|---|---|---|---|
| Flesch-Kincaid Grade Level | Sentence length and syllables | General handouts | 6.0 or below |
| Flesch Reading Ease | Same inputs, 0 to 100 scale | Quick checks | 80 or above |
| SMOG Index | Count of polysyllabic words | Health materials specifically | 6th grade or below |
| Gunning Fog | Long sentences and hard words | Business-style text | 7 or below |
| Fry Graph | Sentences and syllables per 100 words | Short brochures | Grade 5 to 6 |
The SMOG Index is often favored in healthcare because it predicts the grade level needed for 100 percent comprehension, not just partial understanding. If you only run one test, run that one.
✅ Best practice: Test sections separately. One dense paragraph about side effects can drag a whole brochure up two grade levels, and you will not see it in a single average score.
No formula tells you whether the content is clear. A text full of short words can still be confusing, and a layout with tiny gray type can fail a reader whose text scores perfectly. Use the scores as a screen, then confirm with real people.
Hitting the target is mostly a matter of habit. Short sentences, common words and direct instructions get you most of the way.
| Instead of | Write |
|---|---|
| Hypertension | High blood pressure |
| Administer | Give or take |
| Adhere to the regimen | Take your medicine as directed |
| Adverse reaction | Bad reaction or side effect |
| Contraindicated | Do not use if... |
| Ambulate | Walk |
| Discontinue | Stop |
| Elevated | Higher than normal |
When a medical term is necessary, use it once, define it in plain words, and then stay consistent. A patient who sees "blood pressure," "hypertension" and "BP" in the same brochure may think they are three different things.
Before (grade 13): "Patients should refrain from consuming alcoholic beverages while undergoing treatment, as concurrent use may precipitate adverse hepatic effects."
After (grade 5): "Do not drink alcohol while you take this medicine. It can hurt your liver."
The second version is shorter, direct and gives the reader a clear action. Nothing clinically important was lost.
Plain language is not baby talk. Adults want respect. Avoid cute phrasing and over-simplified metaphors. Say the thing clearly and assume the reader is intelligent but busy and worried.
💡 Pro tip: Read your draft out loud. If you stumble or run out of breath in the middle of a sentence, your reader will too.
A 5th grade score means little if the page is a wall of text. Layout is part of readability.
| Design element | Recommendation | Why it helps |
|---|---|---|
| Font size | 12 to 14 points minimum for print | Older eyes need larger type |
| Font style | Clean sans-serif or a clear serif | Avoid decorative fonts |
| Contrast | Dark text on a light background | Gray on white is hard to read |
| Line length | 40 to 60 characters | Keeps the eye on track |
| White space | Generous margins and spacing | Reduces visual overload |
| Headings | Short, in question or action form | Helps scanning |
| Images | Real photos or simple icons near the related text | Supports memory |
| Lists | Bullets and numbers for steps | Makes tasks easy to follow |
Pictures can raise comprehension, but only when they match the text. A photo of someone using an inhaler beside the inhaler instructions helps. A generic stock photo of a smiling doctor does not.
Aim to show one idea per image, and place it directly beside the sentence it supports. Avoid cluttered charts and tiny labels.
Formulas are a first screen. People are the real test.
✅ Best practice: Test with the people who struggle most, not the people who are easiest to recruit. Staff members and volunteers rarely represent your lowest-literacy readers.
A community clinic rewriting its diabetes handout might cut the text from 1,200 words to 450, replace three paragraphs with a four-step checklist, and move from an 11th grade score to a 5th grade score. Follow-up calls about "what do I eat?" drop because the answer is now on the first page.
A pharmacy adding a one-page plain language insert beside each prescription might see fewer questions at the counter and better adherence at refill time.
A pediatric practice might add a picture-based schedule for vaccines so parents who read in a second language can still follow the plan.
Not every brochure carries the same risk. Match the target to the stakes.
| Brochure type | Suggested grade level | Special notes |
|---|---|---|
| Medication instructions | 4th to 5th | Use numbers and pictures |
| Discharge instructions | 5th | Put warning signs first |
| Consent explanations | 6th | Define every procedure term |
| Chronic disease management | 5th to 6th | Break into short sections |
| Prevention and screening | 6th | Focus on benefits and next steps |
| Insurance and billing | 6th to 8th | Include contact numbers |
| Clinical trial information | 6th to 8th | Required content may raise the level |
When regulations require specific wording, keep that text exact but add a plain language summary box above it. Readers get the meaning, and the legal language stays intact.
Print is not going away in clinics, but more patients now open their materials on a phone at home. A digital version solves several readability problems at once.
If you already have a rewritten PDF, you can turn it into a page-turning brochure in a few minutes.
💡 Pro tip: Make the first page a plain language summary with three bullet points. Readers who see the answer quickly keep going.
| Need | Suggested tool |
|---|---|
| General patient handouts | Brochure Flipbook Maker |
| Designing from scratch | Online Brochure Designer |
| Staff education packets | Training Manual Flipbook |
| Wellness center information | Spa & Wellness Menu |
| Newsletters for patients | Newsletter Flipbook Publisher |
Flipbooks AI includes no watermarks, mobile-responsive design, offline downloads and custom branding, so your brochures look like they belong to your organization.
Even teams that care about plain language slip up. Watch for these.
If you serve patients who read in other languages, do not translate a complicated English text word for word. Simplify first, then translate, then have a native speaker check it. Reading level targets apply in every language, and idioms rarely survive translation.
One rewritten brochure helps a few patients. A review process helps all of them.
Write a short internal rule: every patient-facing document must score at grade 6 or below and pass a teach-back test before approval. Put it in your style sheet, and name the person who signs off.
| Frequency | Task |
|---|---|
| Every new document | Readability test and teach-back |
| Every 12 months | Check clinical accuracy and reading level |
| After any guideline change | Update and re-test the affected brochure |
| Quarterly | Review analytics and patient questions |
Track a few simple signals: calls to the nurse line about a specific topic, missed appointment rates, patient survey comments and page-level analytics for digital brochures. If calls about a topic fall after a rewrite, the work paid off.
You do not need to rewrite everything at once. Pick the brochure that generates the most questions, rewrite it to grade 5 or 6, test it with five patients and publish a clean digital version.
Ready to try it? Get started for free on Flipbooks AI, browse all flipbook tools to find the right template, or compare pricing plans to see which one fits your clinic. When you are ready to roll it out across departments, create your account and choose a plan in one step.
The target is not complicated: write at a 6th grade level or lower, design for tired eyes, and test with the people who will actually use the page.
