Health Influencers With Nutrition Credentials Are the Most Likely to Promote Products, Pew Data Shows
A new Pew Research Center analysis of more than half a million social media posts finds that dieticians and nutritionists are more likely than any other type of health/wellness influencer to promote a product or service in a majority of their posts. The analysis, which examined Instagram, TikTok, and YouTube content published between February and April 2026, shows that the frequency of promotional posting varies sharply depending on the background listed in an influencer’s bio.
The figures come from the Pew Research Center report “What Do Health and Wellness Influencers Post About?” Pew researchers analyzed 535,512 posts published by 6,334 health and wellness influencers. They used keywords and descriptions in social media bios to classify the influencers into categories, then calculated how many influencers within each category promoted a product or service in most of their posts.
According to the chart, 43% of influencers who described themselves as dieticians or nutritionists promoted products in a majority of their posts. That was the highest percentage among all categories measured. Next came those in complementary, alternative, and integrative health at 41%, followed by authors at 40%, entrepreneurs at 38%, and coaches at 37%. Researchers were at 35%, while allied health and conventional medicine tied at 32%. Influencers with no credentials listed were at 30%, mental health influencers at 29%, life-experience influencers at 26%, athletes at 25%, and activists at 19%.
The margin between the top and bottom categories is 24 percentage points, suggesting that an influencer’s professional identity and business model are strongly associated with how they use their platform. The chart is careful to measure only those who promote in a majority of their posts, meaning that occasional mentions of products or services did not count. The percentages therefore describe frequent promotion, not simply the presence of an occasional link, discount code, or endorsement.
Pew’s definition of promotion is particularly broad. The note under the chart explains that posts that contain a promotion include those that recommend both paid and free products and services. That means a mental health influencer who repeatedly recommends a free meditation app, or a fitness creator who regularly suggests a particular free workout video, would be counted as promoting that service. The numbers do not measure only paid sponsorships or formal brand partnerships. Instead, they capture a wider range of consumer recommendations, from a dietician’s paid supplement endorsement to an author’s self-promotion of a book.
This is an important distinction. Some social media users may assume that “promotion” means a clearly labeled advertisement or a sponsored post. Under Pew’s method, the label is much broader. Any repetitive recommendation of a product or service, even with no financial benefit to the influencer, is treated as promotional. This approach makes the findings more comprehensive, but it also means the data should not be used to claim that one out of every three or four health influencers is secretly selling ads. Some of these posts may be well-intentioned recommendations. The key takeaway is not that these influencers are dishonest, but that their content often combines advice with the role of a marketer.
The top position of dieticians and nutritionists is especially notable. Dieticians and nutritionists are often viewed as trusted figures in the health space because of their formal training and evidence-based guidance. Brands in the food, beverage, supplement, and weight-management industries frequently seek partnerships with them because a credential can lend legitimacy to a product. The Pew data suggests that many nutrition-focused influencers have built content strategies that incorporate frequent product recommendations. This does not mean all such recommendations are harmful or false. It does mean that audiences need to be aware that a dietitian’s social media page may function as both an educational source and a promotional platform.
Complementary, alternative, and integrative health influencers were close behind, with 41% promoting in a majority of their posts. This category includes practitioners and advocates of approaches such as herbal medicine, naturopathy, acupuncture, and functional medicine. These fields are often connected to the sale of supplements, wellness devices, and specialized therapies, which may help explain the high promotional frequency. For many creators in this space, promoting products is not separate from their health philosophy; it is part of how they build a business around their recommendations.
Authors, entrepreneurs, and coaches also appeared near the top of the list. This is perhaps unsurprising. Social media is a natural marketing channel for people who sell books, courses, consulting sessions, or branded merchandise. An author who writes a health book may use Instagram and TikTok to build an audience, share excerpts, and direct followers to purchase the book. An entrepreneur with a wellness brand may use every post to highlight that brand. A coach may offer free content as a funnel for paid coaching packages. For these influencers, promotion is not an occasional addition to their content; it is central to their livelihood.
The middle of the table included researchers, allied health professionals, and conventional medicine practitioners. Researchers, for example, may promote their own studies, books, or university programs. Allied health professionals, such as physical therapists, occupational therapists, and speech pathologists, may recommend tools and services that their patients need. Conventional medicine practitioners, including doctors and nurses, may partner with pharmaceutical companies, medical device makers, or hospital systems.
But the numbers also complicate the assumption that professional credentials make someone less likely to promote. Influencers with no credentials listed were in the middle of the ranking at 30%. That was lower than several credentialed groups, but higher than mental health influencers, life-experience creators, athletes, and activists. In other words, having a formal health credential does not automatically make an influencer more independent or less commercial. The categories that tended to promote most often were those with direct financial incentives to sell something: books, courses, supplements, coaching services, or personal brands.
The lower rates among mental health influencers and activists are also interesting. Mental health influencers, at 29%, may be more cautious about recommending products to a vulnerable audience. Ethical concerns and privacy issues may make them less likely to fill their feeds with promotional content. Life-experience influencers, at 26%, may focus more on sharing personal stories and emotional support than on selling products. Athletes, at 25%, are surrounded by sponsorship culture and brand deals, yet their health and wellness posts may focus more on workouts, game footage, and personal routines than on explicit product recommendations. Activists, at just 19%, were the least likely to promote products in a majority of their posts. Their content may center on policy, social justice, and community organizing, leaving less room for consumer goods.
The Pew analysis is based on a large sample, but it has important limitations. The categories are based on the information that influencers include in their own social media bios. A person who is a licensed dietician but does not mention that credential in their bio would not be classified as a dietician. On the other hand, some people may use titles and terms loosely. The categories may also overlap. An influencer who identifies as both an author and a coach could appear in both groups. Because the data comes from public bios rather than interviews or surveys, it reflects how influencers present themselves to the public, not necessarily their full professional backgrounds.
Additionally, the data does not evaluate the quality or safety of the promoted products. A product can be widely recommended by influencers and still be ineffective, unnecessary, or even dangerous. At the same time, frequent promotion does not automatically mean a product is bad. Many influencers may promote products they genuinely use and believe in. The chart simply measures frequency, not accuracy, honesty, or clinical effectiveness.
Still, the findings carry meaningful implications for public health and media literacy. Many Americans turn to social media for health and wellness advice, often before seeing a doctor, therapist, or registered dietician. When the people offering that advice are also regularly recommending products, the line between health communication and advertising can become blurred. A viewer may not know whether a glowing review of a supplement is based on scientific evidence, personal experience, a paid partnership, or a desire to earn an affiliate commission.
Regulators and policymakers may also take note. The Federal Trade Commission requires influencers to disclose material connections with brands, but not all promotional posts are clearly disclosed. Pew’s broad measure counts unpaid recommendations as well, so the numbers do not directly measure whether influencers are following disclosure rules. However, the data suggests that promotional content is widespread enough that consumers should be skeptical when a health influencer repeatedly recommends a single product or service.
The report also raises questions for health care professionals. Doctors, dietitians, and therapists may need to talk with patients about how they evaluate online health information. Just because an influencer has a credential or a large following does not mean their product recommendations are free from commercial influence. In an online world where expertise and entrepreneurship are often combined, audiences need to separate the messenger from the message.
Ultimately, the Pew Research Center data provides a valuable snapshot of the health influencer economy. It shows that promotion is not evenly distributed across the industry. Some kinds of influencers are much more likely than others to turn their platforms into storefronts. The findings should encourage viewers, researchers, and public health officials to think carefully about the commercial side of health content on social media. The person behind a wellness video may be a reliable expert, a talented marketer, or both. Knowing the difference is becoming increasingly important.
