Executive summary

A wellness influencer may not simply be selling a product. They may be selling a body standard — and inviting consumers to purchase their way toward the gap between who they are and who they are told they should become.

A Flinders University study published in the Journal of Technology in Behavioral Science analyzed 300 popular TikTok and Instagram videos under #healthylifestyle, #nutrition and #cleaneating. Seventy-eight percent of creators lacked recognized qualifications in health, fitness or nutrition; 68% of the health information was classified as misleading or ambiguous; 67.3% emphasized “clean” or “healthy” eating; 28.7% imposed rules or restrictions; 19.7% moralized foods; 63% featured body objectification; and 75.3% promoted supplements or “superfoods.” This was a content analysis. It identifies what messages are circulating; it does not establish that viewing those posts causes eating disorders.

The study matters for more than misinformation. From a consumer-psychology perspective, the deeper question is: what exactly is being commercialized when health, thinness, discipline, purity and bodily appearance are packaged as one coherent promise?

My professional interpretation is that a portion of digital wellness operates as an architecture of aspirational identity. The supplement, shake, meal plan, subscription or affiliate code may be the visible transaction. The psychological transaction often occurs earlier: the consumer is invited to reinterpret their body as an unfinished project, certain foods as evidence of personal failure, and the influencer’s appearance as if it were causal proof that the regimen works.

That does not mean every wellness influencer is deceptive or every aspirational message is harmful. It means that when perceived authority, idealized aesthetics, personal testimony, algorithmic repetition and health-related products converge, the ethical standard should be higher than for ordinary entertainment.

01 · What Flinders actually studied

Three hundred videos, two platforms and a map of wellness culture targeting women

The study, “Eat Like Me = Look Like Me: A Content Analysis of Healthy Lifestyle, Nutrition and Clean Eating Social Media Content,” by Katie Porteous, Eva Kemps, Ashleigh Powell and Ivanka Prichard, was published on July 22, 2026. The researchers collected the first 50 videos returned for each of three hashtags — #healthylifestyle, #nutrition and #cleaneating — on TikTok and Instagram between May 25 and May 27, 2025. The final sample contained 150 TikToks and 150 Instagram Reels, all directed toward women and featuring female creators.¹

The coding framework assessed food content, body image, exercise, orthorexia-related characteristics and credibility. A second coder independently assessed 20% of the sample, producing high overall inter-rater agreement (κ = .88). That strengthens confidence in coding consistency, while still leaving room for the interpretive limitations acknowledged by the authors.

Qualified creators were substantially more likely to provide credible information. In the study, 45.5% of videos from qualified creators were classified as credible versus 4.7% from unqualified influencers. Conversely, 75.2% of content from unqualified influencers was categorized as misleading or ambiguous, compared with 40.9% among qualified professionals.

02 · What the study cannot prove

Content analysis describes messages. It does not prove what those messages cause in users.

The researchers analyzed posts; they did not randomly assign users to exposure conditions or track clinical outcomes over time. The study therefore cannot establish that clean-eating content causes orthorexia, anorexia, bulimia, body dissatisfaction or compulsive purchasing.

Its findings also cannot automatically be generalized to men, nonbinary audiences, every culture or all TikTok and Instagram content. The sample was women-focused, collected over a defined period and limited to three hashtags and the first results returned by the platforms.

03 · Orthorexia and the morality of “eating right”

When health stops being flexible and becomes a rule for proving who you are

Orthorexia nervosa is used to describe an excessive, rigid preoccupation with eating in a “correct,” “pure” or “healthy” way. International expert consensus work has proposed defining features involving inflexible self-imposed rules, intense preoccupation and potential social or nutritional impairment. At the same time, orthorexia is not yet a standardized standalone diagnosis, and the scientific literature continues to debate its boundaries and overlap with other eating-related conditions.²

That distinction matters because interest in nutrition is not pathology. A structured eating pattern is not automatically disordered. Concern becomes more clinically relevant when rules grow rigid, dominate daily life, trigger intense guilt after “breaking” them, eliminate entire food groups without appropriate indication or impair relationships and wellbeing.

04 · Consumer psychology

The invisible product: buying to move closer to an aspirational self

Influencer marketing is powerful partly because it reduces the psychological distance between advertising and everyday life. The creator is not merely shown “selling.” They are eating breakfast, training, cooking, talking about their routines and narrating personal choices. Over time, this can support a parasocial bond — a one-sided sense of familiarity and closeness that can make recommendations feel embedded in a relationship rather than presented as advertising.

Recent health-communication studies indicate that perceived influencer credibility can increase healthy-eating intentions and that parasocial interaction can mediate part of that effect.³ This is important because influence itself is not inherently harmful. The same relational mechanism can spread useful information or amplify weak evidence. Ethics depends on message quality, commercial transparency and proportionality of claims.

From “I use this” to “my body proves this works”

The most delicate persuasive leap occurs when the influencer’s body becomes a living testimonial. The implied sequence can become: “I consume this → I look like this → if you consume this, you may become more like me.” That inference rarely controls for genetics, age, health history, training, income, time availability, medication, filters, lighting, surgery or simultaneous use of multiple products.

This is where aspirational identification may combine with a health halo. Labels such as “natural,” “clean,” “fit,” “organic” or “wellness” can spill over into broader judgments that a product is healthier, safer or more virtuous than the evidence warrants.

05 · Social comparison

“If she can do it, I should be able to”: when inspiration becomes personal deficit

Upward social comparison occurs when people compare themselves with someone they perceive as superior on a valued dimension: appearance, discipline, status or lifestyle. On social media, these comparisons are often made against highly curated, filtered and repeated versions of other people.

A meta-analysis of 83 studies involving 55,440 participants found a moderate association between greater online social comparison and body-image concerns (r = .454), as well as between online comparison and eating-disorder symptoms (r = .36). Greater comparison was also associated with lower positive body image.⁴

These are associations, not proof of a single causal direction. Daily-process studies also suggest bidirectional dynamics: upward comparison can precede lower body satisfaction and stronger restrictive urges, while those states can in turn increase later comparison. That pattern is better understood as a feedback loop than as a one-way arrow.

06 · Responsible neuromarketing

Neuromarketing should not mean “hacking the brain”

The term neuromarketing is often stretched to cover almost any persuasive tactic. A more responsible professional approach is to understand how attention, emotion, memory, reward, familiarity and social signals influence consumer choice without inventing neurological determinism that the evidence does not support.

Applied to digital wellness, an ethical framework asks whether attention is captured through genuine usefulness or through body fear; whether personal experience is clearly distinguished from clinical advice; whether likes and transformations are being used as substitutes for evidence; and whether the purchase is being framed as a route to moral belonging among the “disciplined,” “clean” or “healthy.”

The ethical boundary appears when a strategy depends on increasing shame, guilt, dissatisfaction or fear in order to make a product more desirable. Persuasion is not inherently harmful. Turning body vulnerability into a conversion funnel deserves much closer psychological scrutiny.

07 · Food moralization

“Good food,” “bad food”: when a consumption choice becomes a judgment about the person

Classifying foods can simplify decisions, but moralization does something different: eating becomes evidence of virtue. Recent qualitative work shows that people frequently use moral and emotional categories when describing food and that restrictive practices can become tied to identity and self-worth.

From a marketing perspective, this grammar can be commercially powerful. If a “clean” food symbolizes discipline, a supplement can sell belonging to a disciplined identity. If a “bad” food symbolizes failure, a perceived transgression can produce guilt — and guilt can create demand for a compensatory purchase.

The product is not always the supplement. Sometimes the psychological product is the promise of no longer feeling guilty for failing to look like the influencer.

08 · Algorithms and repeated exposure

Personalization can turn a preference into an information environment

The Flinders study analyzed content, not recommendation algorithms. Other research, however, helps explain why personalization matters. A study involving more than one million delivered videos over one month found that accounts belonging to people with eating disorders were exposed more frequently than healthy controls to appearance-focused, dieting, exercise and toxic eating-disorder-related content.⁵

This does not mean the algorithm caused the disorder. It does show that exposure environments can differ materially based on user patterns and profiles. For marketing ethics, that means a single post may operate as part of a repeated stream rather than as an isolated message.

09 · Commercial ethics

A before-and-after image is not scientific evidence

The U.S. Federal Trade Commission requires influencers to clearly disclose material relationships with brands and prohibits claims that imply evidence advertisers do not actually possess. Health-related claims require especially strong substantiation.⁶

The broader principle is universal: personal testimony must be separated from scientific evidence. “This worked for me” is not equivalent to “this will make you look like me.” Hidden commercial relationships also change how audiences should interpret recommendations.

10 · Seven principles for ethical wellness marketing

1. Do not equate appearance with health. Thinness or muscularity is not sufficient evidence of wellbeing.
2. Do not moralize food. Replace “good/bad,” “clean/dirty” and guilt language with contextual information.
3. Separate lived experience from clinical advice. Credentials and scope should be explicit.
4. Disclose commercial relationships. Transparency allows informed interpretation of persuasion.
5. Do not use the creator’s body as causal proof. A body image does not demonstrate product efficacy.
6. Assess audience vulnerability. Take extra care with minors and users with body-image or eating concerns.
7. Optimize for usefulness, not anxiety. Ethical neuromarketing should reduce uncertainty without manufacturing personal deficiency.

Consumer checklist

Eight questions before turning a Reel into an eating rule

1. Who is giving the advice, and what verifiable qualifications do they have?
2. Is a brand relationship or affiliate code clearly disclosed?
3. Is evidence provided, or only a personal transformation story?
4. Does the message promise a specific body outcome?
5. Does it moralize foods as “good” or “bad”?
6. Does it eliminate whole food groups without clinical context?
7. Does the content inform you, or leave you feeling afraid, guilty or inferior?
8. Would the recommendation still seem credible if you completely ignored the influencer’s body?

Conclusion

Health should not need shame in order to sell

The Flinders study does not show that TikTok or Instagram causes eating disorders. It does document a popular wellness environment where healthy-eating language is frequently mixed with restriction, food moralization, body objectification, supplements and misleading health information.

Consumer psychology helps explain why that combination can be commercially powerful. Perceived creator credibility, parasocial relationships, social comparison and health halos can turn a product into a vehicle for identity. Consumers may not only be purchasing ingredients; they may be purchasing the expectation of becoming the kind of person the content presents as disciplined, desirable and healthy.

Responsible neuromarketing should therefore stop asking how vulnerability can be exploited more efficiently. The better question is how value can be communicated without making psychological insecurity a prerequisite for conversion.

Selected references

1. Porteous, K., Kemps, E., Powell, A., & Prichard, I. (2026). “Eat Like Me = Look Like Me:” A Content Analysis of Healthy Lifestyle, Nutrition and Clean Eating Social Media Content. Journal of Technology in Behavioral Science. https://doi.org/10.1007/s41347-026-00685-5
2. Flinders University. (2026, September 8). Eat like me to look like me.
3. Donini, L. M., et al. (2022). Consensus definition and diagnostic criteria for orthorexia nervosa.
4. Bonfanti, R. C., et al. (2025). Social comparison in social media, body image concerns and eating-disorder symptoms: systematic review and meta-analysis.
5. Federal Trade Commission. Endorsements, Influencers, and Reviews; Endorsement Guides.