Fairy tales may seem harmless, but when they morph into viral diets, they become invisible traps that ensnare young girls with no safety net.
Madrid, August 2025
The so-called “princess diet” has become an alarming trend on social media, especially on TikTok and Instagram. Under the guise of an innocent challenge inspired by animated characters, it promotes a daily intake limit of just 600 calories, promising a weight loss of up to ten kilograms in two weeks. According to warnings from the World Health Organization and the Spanish Association of Pediatrics, this amount is far below the minimum nutritional requirements for growing children and adolescents, posing severe and potentially irreversible consequences for their physical and mental health.
This practice does not emerge in isolation—it feeds off a cultural narrative that, for decades, has linked feminine beauty to extreme thinness. In children’s storytelling, “princess” figures embody an unattainable ideal of purity, success, and love, while more diverse bodies are often relegated to the role of villains or secondary characters. Child psychology experts emphasize that such representations condition self-perception from an early age and increase vulnerability to extreme weight-control measures.
The risks go far beyond rapid weight loss. Severe calorie restriction can lead to dizziness, extreme fatigue, hormonal imbalances, weakened immunity, and growth delays. Psychologically, it significantly increases the risk of developing eating disorders such as anorexia and bulimia, as well as depression and anxiety. The Spanish Society of Endocrinology and Nutrition warns that subjecting a developing body to this level of food deprivation impacts not only immediate health but also the ability to reach full physical and cognitive development in adulthood.
The digital component amplifies the problem. Social media recommendation algorithms boost the visibility of such challenges, especially among young users who have previously engaged with similar content. A recent University of California study found that harmful trends of this nature spread 40% faster than health education or warning messages, making it harder to counter their influence. The cycle of likes, comments, and public challenges fuels a culture of constant comparison that erodes self-esteem and normalizes damaging behaviors.
This effect is compounded by the indirect complicity of users who, unaware of the risks, replicate the trend as just another online craze. Influencers and micro-content creators have participated in the viral spread of the diet without acknowledging its dangers, reinforcing the illusion that it is harmless fun when, in reality, it represents a public health hazard. Authorities in countries such as Spain, Mexico, and the United States have already requested the removal of such content from platforms, but the speed at which new versions appear makes full control difficult.
Mental health and nutrition organizations recommend a combined approach: early education on healthy eating habits, media literacy to identify and challenge harmful narratives, and coordinated efforts between tech platforms and regulatory bodies to detect and block dangerous trends. They also propose mandatory warning labels on any content referencing extreme diets, similar to the regulations applied to tobacco and alcohol.
Experts caution that the root of the problem is cultural and structural. As long as beauty ideals remain narrow, homogeneous, and exclusionary, such fads will find fertile ground to spread. The difference today is that technology amplifies the pressure and shortens reaction times, allowing risks to reach younger audiences faster than ever before.
If this trend is not curbed, the number of minors affected by eating disorders could rise steadily over the next decade. Conversely, if critical and empathetic education on body image and health is integrated from childhood, social media could become an ally in spreading positive messages and safeguarding vulnerable audiences. The challenge will always be to create role models and narratives that break the mold of imposed perfection, ensuring that beauty is not a prison but a free, plural space.
Because behind every “viral challenge” that manipulates eating habits, there is no magic or fairytale ending—only a social and media structure that must be challenged before it turns a game into a lifelong wound.
This piece was developed by the Phoenix24 editorial team using reliable sources, public data, and rigorous analysis in alignment with the current global context.
Esta pieza fue desarrollada por el equipo editorial de Phoenix24 con base en fuentes confiables, datos públicos y análisis riguroso, en coherencia con el contexto global vigente.