Can Eight-Year-Olds Develop Early Puberty from Eating Ejiao Candy?

Concerns about early puberty in children who consume traditional Chinese medicinal foods—such as ejiao cake (a gelatinous confection made from donkey-hide gelatin)—are understandable, but current scientific evidence does not support a causal link between moderate, age-appropriate consumption and precocious puberty.

Ejiao cake contains hydrolyzed collagen peptides, trace minerals, and small amounts of bioactive compounds derived from processed donkey hide. While it is traditionally used to support blood nourishment and alleviate fatigue in adults, it is not formulated or clinically validated for pediatric use. Importantly, ejiao cake does not contain exogenous sex hormones (e.g., estradiol or testosterone), nor does it possess known endocrine-disrupting activity that would directly stimulate gonadotropin-releasing hormone (GnRH) secretion or accelerate hypothalamic-pituitary-gonadal axis maturation.

Early puberty—defined as onset of breast development before age 8 in girls or testicular enlargement before age 9 in boys—is a complex neuroendocrine process influenced by genetic, nutritional, environmental, and metabolic factors. Obesity, rapid weight gain, exposure to certain environmental endocrine disruptors (e.g., phthalates, bisphenol A), and underlying medical conditions (e.g., central nervous system abnormalities, congenital adrenal hyperplasia) are well-documented contributors. Dietary collagen supplements, including ejiao-derived products, have not been implicated in epidemiological or mechanistic studies as risk factors for central precocious puberty.

That said, pediatricians advise caution: routine supplementation with traditional tonics in healthy children lacks evidence-based benefit and may displace nutrient-dense whole foods. For an 8-year-old, balanced nutrition, adequate sleep, regular physical activity, and avoidance of unnecessary hormonal or phytoestrogen-rich supplements remain the cornerstone of healthy pubertal timing. Parents with concerns about developmental milestones should consult a pediatric endocrinologist for individualized assessment—not rely on anecdotal reports or unverified traditional claims.