Social media health content dominated by unqualified influencers

Research indicates that a significant portion of health and nutrition content on social media platforms like TikTok and Instagram is misleading or provided by unqualified individuals. An analysis by Flinders University of 300 videos tagged with healthy eating hashtags found that 78% of creators lacked professional qualifications, such as dietetic or nutritional training. Consequently, more than two-thirds of the analyzed content was classified as deceptive or inaccurate.

The study noted that content often promotes restrictive eating rules, unverified superfoods, and supplements, frequently linking health directly to physical appearance. These patterns are associated with orthorexia nervosa, a condition characterized by an unhealthy obsession with pure or clean eating. While Instagram content tended to focus on idealized muscular bodies, TikTok content often framed eating around general wellness.

In a separate study of 5,000 posts by agency Billion Dollar Boy, researchers found that the effectiveness of food influencers is also tied to authenticity. Excessive or scripted product recommendations were found to reduce organic view rates by up to 42% on Instagram and 19% on TikTok. Conversely, when creators integrated products into relatable, real-life scenarios, brand favorability and purchase consideration increased.