AI, Ghostwriting, and Misinformation: Can Freelance Medical Writers Still Maintain Integrity?

If you become a medical writer, your work will depend on your background and interests. You could, for example, find yourself writing health-related blog posts, scientific papers, or continuing medical education (CME) materials, which help healthcare professionals stay up to date on evolving research and clinical practice guidelines.

You don’t need to hold a medical degree to get into the field. The American Medical Writers Association (AMWA) notes that many writers start in biology, chemistry, health sciences, English, or journalism—not in medicine. 1

However, whatever your background is, you need to be able to understand medical information and communicate it accurately to your audience.

Unfortunately, the rise of tools like AI has made fulfilling that responsibility more complex.

Using AI in your workflow can accelerate parts of the writing process, but the writers we spoke to emphasized that AI isn’t a medical expert.

Gerardo Sison, PharmD, a licensed pharmacist and founder of the medical writing firm LetterMed, said he uses AI to research topics, brainstorm outlines, and identify studies that might be relevant. However, he still verifies every piece of information via primary sources, including PubMed, DailyMed, FDA labeling, and current clinical guidelines.

Only then does he consider using the information AI uncovered in an article.

This due diligence matters because AI might provide an irrelevant or outdated study. Worse, it can flat-out get things wrong while sounding confident (this is popularly known as “hallucinating”).

“ChatGPT and Claude can sometimes misinterpret studies and give false data,” Sison told us.

Recent research supports this. The 2026 Stanford AI Index found that hallucination rates across 26 leading AI models ranged from 22% to 94% on a factual accuracy benchmark, which evaluated reliability across 6,000 questions in six domains, including health.2

Technically correct information can still be misleading

For medical writers, there’s another problem that can be harder to spot than outright misinformation. Even when AI isn’t hallucinating, it can still be misleading.

Freelance medical writer Sarah Caesar—whose background in healthcare research and academia helped her found her own writing firm—told us that AI often produces information that is technically correct but lacks context or nuance.

It might, for instance, accurately summarize a study’s findings while leaving out its limitations, eligibility criteria, or the strength of the evidence.

Juliann Scholl, PhD, a former co-director at the CDC who now also runs an independent medical writing firm, pointed to a specific example of this.

“A study’s results suggest a new medication lowers glucose levels in a group of African American male participants aged 45-60,” she said. “AI then erroneously makes the broad claim that the drug is likely to lower glucose levels across the board.”

To avoid traps like this, Scholl recommends that you look out for words like “proves,” “causes,” or “prevents” in AI’s output, as AI often makes causal inferences when the original study only suggested a correlation.

AI scriptwriting and video creation

The challenge isn’t limited to AI in articles. Medical misinformation can spread just as quickly when writers use AI to condense complex health information for social media.

On platforms such as TikTok (under hashtags like #healthtok), creators can turn research and health trends into viral content, sometimes without the context needed to understand what the evidence actually shows.

For medical writers, this is another reason to approach AI as a productivity tool rather than an authority. Whether you’re using it to draft a blog post, summarize a study, or write and produce a 60-second video script, the underlying claims still need to be checked against reliable sources.

Medical writers have a responsibility not only to ensure that the information they publish is accurate, but also to be transparent about how that information was produced and who stands behind it.

That becomes particularly important when their work is published under someone else’s name.

Carelessly ghostwritten medical documents can have far-reaching consequences. In September 2004, the painkiller Vioxx (rofecoxib) was infamously pulled from the market after clinical data found that it doubled the risk of serious heart attacks and strokes.3 When thousands of internal documents were unsealed during the ensuing litigation, they exposed a deceptive ghostwriting practice that had propped up the drug’s scientific credibility.

An investigation into those documents revealed that pharmaceutical employees and medical publishing companies had drafted several clinical trial manuscripts and review articles, then had other academic authors attach their names without properly vetting the contents.45

Doctors reading those journals may have then been misled about the drug’s safety profile, leading them to prescribe Vioxx to millions of patients who might have been safer taking other medication.

Where legitimate writing support begins

Scandals like this don’t mean that all medical ghostwriting is unethical. A physician or researcher may have the data and the expertise but lack the time or writing experience to turn their work into a manuscript. That’s where medical writers can help.

Caesar sees that kind of collaboration as the core of the field.

“Researchers and physicians are often incredibly busy, and experienced medical writers can help organize complex information, improve clarity, and ensure manuscripts meet publication standards,” she said.

When there are ethical problems, they often come from a lack of transparency about authorship.

What counts as authorship?

To prevent scenarios like the Vioxx scandal, the industry relies on strict transparency rules.

For publications in medical journals, the International Committee of Medical Journal Editors (ICMJE) recommends that authorship be given to anyone who makes substantial contributions to the work, participates in drafting or reviewing it, approves the final version, or agrees to be accountable for it.6

For Caesar, the line between unethical ghostwriting and legitimate writing assistance comes down to intent and transparency.

“The ethical line is crossed when writers fabricate data, selectively present evidence to support a predetermined conclusion, or conceal substantial contributions in ways that violate journal or publication guidelines,” she said.

Sison, who focuses on consumer health content, has similar beliefs about misleading bylines in public-facing articles.

“A byline tells the reader that the clinician looked at the evidence and supports the conclusion,” he said. “But if a sponsor decided on the message first and then attached the clinician’s name to it, that byline is now misleading.”

When you’re trying to boost your income and build a portfolio, every assignment can feel like a stepping stone, and one of the biggest challenges new medical writers face is learning how to distinguish between sketchy and legitimate opportunities.

Scholl said to be wary if a client sends you an email that expresses interest in your services but doesn’t list an identifiable company. She warned that if the email is from a Gmail address rather than another context-appropriate “.com” or “.org” domain, there’s a good chance it’s a phishing scheme.

The writers we spoke to also advised watching out for these red flags:

 1. The pressure to overstate claims

Sometimes, a client might ask you to compromise on medical accuracy for the sake of marketing.

Caesar said she will immediately decline a project if a client wants to promote health claims that aren’t adequately supported by evidence. “I believe my role is to communicate evidence—not to persuade readers of conclusions that the science doesn’t support,” she said.

Scholl frequently encounters a specific “pressure point” where a healthcare provider claims that their treatment is the “best available” or a “cure.” Scholl told us she tries to reframe the copy to balance the client’s marketing goals with the medical credibility of the evidence instead of turning the client away immediately.

“Rather than claiming that a treatment will cure a person’s chronic pain, I cite relevant research indicating that the treatment may help some patients alleviate their symptoms,” she said, “or I discuss which types of patients are most likely to benefit.”

That way, she can avoid making grand promises that can’t be backed up by research.

2. Unrealistic timelines and vague briefs

Unlike many kinds of less specialized content marketing, medical writing requires reviewing primary literature, evaluating the quality of evidence, and verifying sources. You can’t rush the science, which makes bad project management a major red flag.

Sison noted that clients who underestimate how long medical writing takes often end up pressuring writers to cut corners. Scholl agreed, noting that she automatically rejects clients who demand an “urgent” turnaround.

Scholl also advised writers to watch out for clients who provide no clear scope, target audience, or formatting requirements in their initial brief. Vague instructions can lead to “mission creep,” where the client constantly demands extra sections or revisions without updating the contract.

“Allow a set number of revisions before you start charging more,” Scholl advised.

3. Financial red flags and boundary blurring

Scholl warned that writers should walk away from clients who refuse to pay a deposit (which many writers require) or ask for free writing samples. “Your labor is valuable, and there’s no reason to give them any content without fair compensation,” she said. Referring them to your website or online portfolio should be sufficient.

Furthermore, she cautioned against working with clients who say they are looking for a “freelancer” but try to dictate your hours and workflow as if you were their employee. If a client wants to control exactly when and how you work but refuses to offer the benefits of traditional employment, it’s a major warning sign.

Asking you to fill out an application to get the job is another red flag that they don’t understand how freelancing works, Scholl said.

Develop a framework for evaluating health writing projects

When you’re evaluating a new client, ask yourself these five questions. If you answer “no” to several of them, the project may not be worth accepting.

• Evidence alignment: Can the primary claims of this piece be backed up by peer-reviewed research, or am I being asked to spin data to fit a marketing objective?
• Context and limitations: Am I allowed to include necessary context, explain clinical uncertainties, and represent study limitations fairly?
• Timeline adequacy: Has the client allocated enough time for me to perform deep research and manual fact-checking?
• Byline transparency: Is the listed author genuinely collaborating on the piece with me and taking responsibility for its clinical accuracy?
• Source verification: Am I verifying all medical assertions against primary, reputable clinical databases, rather than accepting AI summaries at face value?

Ultimately, as the writers we spoke to put it, your primary loyalty should be to the end reader (i.e., the patient or practitioner relying on your words to make health decisions).

Setting clear boundaries and verifying every claim keeps you accountable for what you write and helps you build the right ethical framework to take on medical writing.

For new writers, the pressure to accept any and every available gig can be difficult to resist, but establishing a solid professional foundation entails using the right vetting tools from day one.

Here’s a step-by-step approach to navigating the early stages of your career ethically and successfully:

1. Master the core scientific concepts first

Scholl believes that new writers must master a few core scientific concepts right out of the gate.

First, you need to understand study design—specifically, the differences between case studies, cross-sectional studies, meta-analyses, and randomized controlled trials.

“Understanding these designs helps prevent you from citing a study to support a claim it wasn’t designed to support,” Scholl said.

Second, you need to grasp correlation versus causation. “You don’t want to cite a study showing that variables A and B are related … and then present that finding as evidence that variable A directly causes changes in B,” she told us.

Finally, you need a working knowledge of basic statistics. You don’t need to be a statistician, but Scholl said that writers must understand odds ratios, confidence intervals, and statistical significance to grasp what findings actually mean.

For Sison, that scientific foundation is particularly important because of what happens after the article is published.

“If my name is going to be on a page that a person—whether it’s a patient or a provider—will look to for guidance, I want to make sure that all of that information is well-researched and accurate,” he told us.

2. Evaluate every study before you use it

Before Scholl uses any study as a citation in her writing, she runs it through a rigorous checklist to ensure it is strong enough to support a medical claim.

She starts by verifying that the study is peer-reviewed, recent, and directly aligned with the topic at hand. From there, she digs into the methodology. She looks for appropriate study design, sample sizes that are large enough to show statistical significance, and clear steps taken to minimize bias, such as double-blinding and randomization.

Scholl also evaluates the researchers’ transparency and potential conflicts. She says a trustworthy study will clearly disclose its methods and limitations, avoid stretching its conclusions beyond what the data proves, and be free from industry funding that could bias the findings.

3. Understand the value of your time and pricing

Understanding how to protect your standards is important, but you must also know how to value your work as a business owner.

Many beginners struggle with pricing because they underestimate how long thorough medical writing takes. For a standard evidence-based piece, Scholl estimates roughly one hour of research and fact-checking for every two hours of writing. This ratio can increase if the piece is highly technical, such as an article on regulatory compliance, pharmacology, or medical manufacturing.

“I would advise any writer to know how long it takes to write different types of content, such as blog posts, white papers, and so on,” Scholl said. “You can then determine how much your labor is worth per hour and calculate what a piece is worth based on how many hours it would take you to finish it.”

As an industry benchmark, the Editorial Freelancers Association (EFA) publishes a standard rate chart. According to their data, medical ghostwriting usually nets between $1.00 and $1.50 per word, or $100 to $126 per hour. Standard work-for-hire medical writing sees similar rates of between $90 and $113 per hour.

However, the AMWA notes that this should be considered a rough guideline. It may be optimistic for beginners, and conversely, more experienced writers often command rates around 75% higher than what’s listed in the EFA’s chart.7

How selective should you be as a beginner?

New writers don’t need to reject every lower-paying assignment while they are starting out. “Most medical writers need to start somewhere to build their portfolio,” Sison said.

The important distinction is between accepting a lower rate to build experience and accepting work that compromises professional standards.

A new writer might take a job at the lower end of the EFA’s spectrum because they need a portfolio sample. That doesn’t mean you should accept an unsupported medical claim, ignore a conflict of interest, or fail to verify AI-generated research.

As Caesar put it, “There will always be more opportunities, but your professional integrity is much harder to rebuild once it’s lost.”