Germany’s fitness protein product market expanded by roughly 25% in retail revenue between March 2024 and March 2025, according to data from the statistics portal Statista, as branded supplements increasingly target adolescent consumers.
Products like Kindershake and Teen Balance are specifically engineered to appeal to young people, and survey data suggests the strategy is gaining traction among a wide swath of American families.
A representative University of Michigan survey of nearly 1,000 parents, conducted in 2024, found that just under half reported their children between the ages of 13 and 17 had used protein products within the previous year.
The motivations split along gender lines, with boys gravitating toward supplements for muscle building and athletic performance, while girls were more likely to cite dietary balance and weight management as their reasons.
Nutritionists point out that most teenagers are already exceeding their protein needs without any supplementation, making the marketing of these products to young people a concern.
A German study conducted between 2015 and 2017 found that roughly half of children and adolescents aged six to seventeen were consuming more than double the protein levels recommended for their age group.
The German Nutrition Society, known as the DGE, sets the daily protein requirement for teenagers at 0.9 grams per kilogram of body weight, meaning a 45-kilogram adolescent needs approximately 40.5 grams per day.
Chronically exceeding that threshold carries real medical consequences, as excess protein forces the kidneys to continuously convert amino acids into urea for excretion, a process that can cause organ damage, particularly in those who are dehydrated or have pre-existing kidney conditions.
Research also links high protein consumption in children, especially from animal sources, to elevated rates of overweight and, in some cases, earlier onset of puberty.
Beyond kidney strain, the specific products being marketed to teens carry additional risks that rarely feature in advertising, including the presence of doping substances discovered by researchers at the German Sport University in Cologne in muscle-building protein products.
Milk-based protein powders, which dominate the market, may also stimulate sebum production in the skin, potentially triggering or worsening acne in adolescents, though a definitive causal link has not yet been established.
Specialists have also raised concerns that relying on shakes or bars could displace balanced meals, leaving young consumers short on fiber, healthy fats, and essential micronutrients.
Cost is another dimension critics highlight, with a 2022 consumer organization study finding that naturally protein-rich foods like cheese, curds, and soy drinks frequently carry a price premium when manufacturers choose to emphasize their protein content on packaging.
The DGE maintains there is no scientific basis for using protein supplements even when the body is under significant physical strain, advising instead that individuals optimize their ordinary diet first.
Elite and high-volume athletes are the one category where higher intake is justified, with the DGE recommending between 1.2 and 2 grams of protein per kilogram of body weight daily, though only for those training more than five hours per day.
For everyone else, including most teenagers playing recreational sports, the society’s position is that a well-structured diet of whole grains, legumes, dairy, and lean protein sources is entirely sufficient.
The DGE does carve out a narrow exception for protein preparations in cases involving allergies, digestive disorders, difficulties with chewing or swallowing, or severely reduced appetite.
Plant-based protein sources, while slightly lower in essential amino acids than animal alternatives, offer compensating benefits in fiber, vitamins, and unsaturated fats, and the DGE specifically recommends prioritizing them when boosting protein intake.
For parents navigating an increasingly aggressive supplement market, the underlying arithmetic remains straightforward: most adolescents are already getting more protein than they need, and the products promising to close a gap that does not exist may quietly introduce risks of their own.
