How to Write Medical, Health, or Lifestyle Books that Readers Actually Buy and Benefit From

For physicians, dietitians, nurses, counselors, and lifestyle educators

Two women are standing in the health aisle of a bookstore, and they are the same woman.

The first one picks up a book called Understanding Metabolic Dysfunction: A Comprehensive Guide. She opens it to chapter one. Chapter one begins with the author’s credentials, moves to a definition of insulin resistance, and arrives, on page nine, at a table. She puts it back.

The second one picks up a book whose subtitle promises she can reclaim her energy in ninety days. She opens it to chapter one. Chapter one begins with a woman named Ruth, fifty-eight, who could not get through a grocery store without sitting down on the bench by the pharmacy, and who had decided, in the car outside the store, that this was simply what fifty-eight felt like. The reader is still standing in the aisle. She has turned to page three.

Same woman, same problem, same medicine inside both books. One of them sold.

This page is about writing the second book. It draws on the best books ever written on story, because a health book succeeds or fails on the same thing a novel does: whether the reader keeps turning pages, and whether what she reads changes what she does on Tuesday. Here is what we have learned.

The reader is the hero of your book

A health book has two candidate heroes, the patient in the case story and the reader, and the spine of the book belongs to the reader. She arrives on page one already wanting something: a number on a chart, a night’s sleep, her knees back. And she arrives already believing something that keeps her from getting it. “My genes decide.” “I have tried everything.” “Healthy food is punishment.”

In a novel, that belief is what K. M. Weiland calls the character’s Lie and what Lisa Cron calls the misbelief: the thing the hero is sure of at the start that the story will prove wrong.¹ Name your reader’s misbelief in one sentence. Then order your chapters as the journey from that belief to the truth, each chapter’s conclusion forcing the next chapter’s question. The book ends with the reader acting, not with the author’s credentials.

One caution that every craft book we work from repeats. The misbelief frame is for beliefs about habits and choices. Never apply it to pathology, or your book reads as “your disease is your wrong thinking,” and the reader who needed you most closes it.

Say the outcome, and say it first

People do not buy health books for information. They buy them for the result. Blake Snyder’s test for a movie pitch is whether the title and the one-line description tell you what you are going to get, and he is blunt about the alternative: “Advice like: ‘Follow your heart!’ and ‘Be true to your vision!’ is fine if you’re in therapy.”² In the marketplace, the reader wants to know what she will have when she is done.

So write the one-sentence promise before you write anything else. “What if the standard advice for X is backward?” “What if a reader could reverse Y in ninety days with Z?” That sentence is your title, your back cover, and the test every chapter must pass. For medical and lifestyle books we have found that an action verb outsells a description: “Reclaim” outsells “Reclaiming,” and a subtitle can run to fifteen or eighteen words when it wraps the outcome in an action.

Then be honest about it. The promise must match the evidence. The craft principle and the medical principle agree here, and our editors hold both lines.

Open with a person and a problem, never with a definition

Readers hunt for three things on page one, according to Cron: whose story is it, what is happening, and what is at stake.³ A definition answers none of them. A credential answers none of them. Ruth on the pharmacy bench answers all three.

Every chapter, not only the first, should open with something at stake for a specific person. Snyder has a name for the alternative, the chapter that spends its first pages explaining before anything happens: Laying Pipe.⁴ Readers can feel pipe being laid, and they leave.

The same rule says: do not open with the cure. The payoff means nothing to a reader who has not been brought into the world where the problem lives. Anne Lamott’s image is the wedding and the cake: you cannot simply announce there is cake; you have to build the wedding first.⁵ Show the good life before the diagnosis, so the loss registers. Then the reader will want what you have to give.

Every case story is a short story, and most of them have no middle

“She followed the plan and improved.”

That sentence is the shape of most case stories in most health manuscripts, and it is why they persuade no one. It has a beginning and an end and nothing in between. No resistance. No relapse. No night the patient ate the whole pan. No moment she decided, against her own habit, to try once more. A case story without a middle reads as an advertisement, and readers have learned to skip advertisements.

A case story is a short story. It needs a picture of the before, a clear stake, a commitment, a crisis, and a result. One patient per case. One teaching point per case. Enter at the moment that matters, reveal the outcome late, and leave at the peak. The inner change (the denial that cracked, the fear that was finally named) comes before the outer result, which is what makes cases persuasive rather than merely illustrative.

And put the relapse in. Donald Maass, who has spent thirty years as a literary agent reading what makes readers care, says it in one line: “The emotional impact of change lies less in the change itself and more in resistance to it.”⁶ A patient who accepts the truth on first hearing gives the reader nothing. A patient who tried the crash diet, lost the weight, gained it back, and came in anyway is the reader.

Snyder has a rule for how such a story must end. He calls it Out of the Bottle: when a hero is given magic, the hero must learn, by the end, to do it without the magic.⁷ For a health book that means the ending is a lifestyle, not a pill or a single food. Any chapter that promises a wish-fulfillment result gets rewritten.

Deliver the physiology while something is happening

The central craft problem of a health book is exposition. The reader needs to understand the mechanism. How much, and when?

Snyder’s answer is the funniest in the craft literature. In a screenplay called The Plot to Kill the Pope, the writers had a mountain of backstory to deliver, so they staged the briefing while the Pope swam laps in the Vatican pool. The audience was so busy watching the Pope in his swimming trunks that it absorbed the whole plot without noticing.⁸ Snyder called it the Pope in the Pool. Every stretch of physiology in your book needs a Pope in the pool: a patient’s question, a kitchen, a surprising setting, a decision that cannot be made until the reader understands the mechanism.

Jack Hart, who edited narrative nonfiction at The Oregonian for years, gives the structure a health book usually needs. He calls it the explanatory narrative, and his model follows a batch of french fries from the potato field to the fryer. The action line is only a spine; the digressions carry the explanation, and each one leaves the action at a point of suspense so the reader follows it back.⁹ One patient’s year, one family’s table, one meal’s path through the body can be the spine of a whole book, with the medicine in the digressions.

And ask of every paragraph the two-word question Cron asks: “And so?”¹⁰ When a car is speeding toward you, your brain does not note the color of the hubcaps.¹¹ A reader in the grip of a question does not want the third study confirming a point already made. Stephen King’s rule is that research belongs in the back story,¹² which for you means the supporting data moves to a sidebar, a table, or an endnote. Move it; do not cut it when a claim depends on it.

Show the symptom, then show why

Here is a rule that will feel wrong to a clinician and is right anyway. Physical description alone does not carry emotion. Angela Ackerman and Becca Puglisi, authors of The Emotion Thesaurus, make the point with a single tear: “The single tear tells you that the person is sad, but how upset is she? Sad enough to sob? Shriek? Collapse?”¹³ Fidgety fingers could be dread or excitement. The reader needs the cause, and the cause arrives through the patient’s thought or words.

They also explain why a patient’s inner voice almost never names the feeling: “An excited person doesn’t think to himself, I’m so excited! because he already knows it. Instead, he thinks about the cause.”¹⁴ So does a frightened one. “She was frustrated with her diet” is a label. “She stood in the pantry with the door open, not hungry, reading the back of a cereal box she had read a hundred times” is a person. One body cue plus one thought gives the reader the patient’s why.

Cron’s formula is the one to tape to your monitor: “Don’t tell me John is sad, show me why he’s sad.”¹⁵ Swap “sad” for “noncompliant” and you have the whole art of the case story.

Keep it proportionate. A book that dramatizes every case at full volume becomes melodrama, and melodrama costs you the one thing a medical author cannot afford to lose, which is credibility. The stock phrases of the genre, “devastating diagnosis,” “overwhelming relief,” are the health-book form of what Mary Karr calls sentimentality: “emotion without vivid evidence.”¹⁶

The actual food, the actual dose, the actual number

Natalie Goldberg’s instruction to writers is “Give things the dignity of their names,”¹⁷ and she goes on: “Learn the names of everything: birds, cheese, tractors, cars, buildings.”¹⁸ For you that means nutrients, foods, organs, drugs. Not “many people find” but one patient. Not “a healthy breakfast” but the actual plate. Not “her numbers improved” but the A1c, before and after.

King shows why a few exact particulars beat a page of adjectives. He describes a table with a red cloth, a cage, a white rabbit with a pink nose, and on its back, in blue ink, the numeral 8. Every reader sees it, and every reader notices the 8.¹⁹ Give each case story one concrete, slightly surprising detail (the pill organizer with Tuesday still full) and the reader builds the rest.

King is equally useful on what to cut. He quotes a novelist who wrote that a detective “sat stolidly beside the corpse, waiting for the medical examiner as patiently as a man waiting for a turkey sandwich.”²⁰ Health writers depend on metaphor for mechanism: the artery as a pipe, insulin as a key. Picture each one literally. If the picture collapses or needs a footnote, cut it.

Write like a person, not a journal article

Medical prose defaults to the agentless passive. “It has been shown.” “It is believed.” “Mistakes were made.” King’s rule is the single biggest improvement available to most physician-authors: “The adverb is not your friend,”²¹ and the passive is worse. The liver processes; there is not “processing in the liver.” When your blood sugar drops, you feel shaky; cause before effect.

The didactic forms of the adverb problem are “extremely important,” “absolutely essential,” “clearly shows.” Each one tells the reader you doubted the sentence could stand alone. Cut them and the sentence stands. Cron’s version: “The bigger the word, the less emotion it conveys.”²²

Then cut again. King’s rule arrived on a rejection slip when he was a teenager: “Not bad, but PUFFY. You need to revise for length. Formula: 2nd Draft = 1st Draft – 10%. Good luck.”²³ Solomon again, and he was not joking: “of making many books there is no end; and much study is a weariness of the flesh” (Ecclesiastes 12:12). Your reader is already weary. A 400-page health book with ninety sections is trying to say everything, and Snyder’s judgment on that is blunt: if you need fifty of something, you have a problem.²⁴ One principle, one case, one practice per chapter. The health book that tries to say everything says nothing. Ellen White told her own writers the same in 1871, and the sentence has not aged: “Brevity should be studied in order to interest the reader. Long, wordy articles are an injury to the truth which the writer aims to present.”²⁷

Be good company

The physician who sneers at the overweight, the addicted, the noncompliant loses the reader on the first sneer. Lamott’s standard for every narrator applies with double force to a doctor: candor, hope, clear sight, and no contempt. Maass adds that readers are pulled through a book by hope, not by fear, and that fear-driven persuasion is not hope.²⁵ Name the stakes honestly, make the danger real and near, and then give the reader somewhere to go.

Solomon had the physician-author’s standard three thousand years early: “Pleasant words are as an honeycomb, sweet to the soul, and health to the bones” (Proverbs 16:24). The voice is part of the medicine.

Snyder’s most famous rule is named for a scene he found in a thriller. Al Pacino plays a detective running a sting on parolees. One of them has brought his young son. Pacino quietly flashes his badge so the father can leave before the arrests begin. One small, specific act of decency, and the audience is on his side for the rest of the film.²⁶ Snyder called it Save the Cat. Your save-the-cat moment is not your CV. It is one real thing you did for one real patient, on the first pages, that shows the reader who she is about to spend three hundred pages with.

And let the reader see that you changed too. How you came to this knowledge, what you believed before, the patient who taught you: that is the story a reader trusts, and it belongs early.

Truth outranks drama

Every craft principle on this page has one limit, and it is our standard, not the craft books’. Case stories must be true, de-identified, consented, and not improved. A composite is labeled a composite. The resolution of a case must match the real outcome. “Raise the stakes” never means inflate a claim. Any medical claim that needs a source, a qualification, or a disclaimer is flagged, not asserted, and no narrative technique may make a claim more persuasive than the evidence allows. When a manuscript calls for it, a medical doctor or a dietitian joins the editorial team to hold that line.

The pattern is an old one. The physician among the Gospel writers opened his book by telling his reader how he had worked: from “eyewitnesses,” “having had perfect understanding of all things from the very first,” and “in order,” so that “thou mightest know the certainty of those things” (Luke 1:2-4). Luke was a doctor who told stories, and he checked them.

Before you send it

• Can I say in one sentence what the reader will be able to do, or stop doing, when she finishes?
• Does chapter one open with a person and a problem, not a credential, a definition, or the cure?
• Does every case story have a middle: a crisis, a relapse, a decision?
• Is every stretch of physiology riding on a question the reader is already asking?
• Where have I named a feeling instead of showing its cause?
• Have I replaced “many people find” with one patient, one plate, one number?
• Have I cut the passives, the intensifiers, and ten percent of the words?
• Does the reader see me change, and see me act kindly, before she sees my credentials?
• Does every claim match its evidence?

This is the shape our editors read for. When a case has no middle, we do not invent one; we ask you for the real one. That is what four editors and three designers do with every manuscript in our Professional, Advanced, and Premium packages, with a physician or dietitian added when the subject calls for one. It is why Dr. James Marcum’s The Creator’s Code reached #1 New Release in Amazon’s Naturopathy category, and why 60% of the books in those packages sell more than 150 copies, four times the rate for self-published books (the full table is on our Writer’s Tips and Guidelines page).

Books worth reading

Lisa Cron, Wired for Story (2012). Donald Maass, The Emotional Craft of Fiction (2016). Angela Ackerman and Becca Puglisi, The Emotion Thesaurus (2nd ed., 2019). Jack Hart, Storycraft (2nd ed., 2021). Stephen King, On Writing (2000). Blake Snyder, Save the Cat! (2005). They were written for novelists and screenwriters. Read them for how a reader’s attention works, which is the same whether what she is reading about is a detective or her own pancreas.

Scripture quotations are from the King James Version.

Mike Brazington, Publisher