Can Giving Children Ejiao Lead to Early Puberty?

Concerns about whether consuming donkey-hide gelatin (ejiao) can trigger premature puberty in children are understandable, but current scientific evidence does not support this claim. Ejiao—a traditional Chinese medicinal product derived from collagen-rich donkey skin—is primarily used to address blood deficiency patterns, such as pallor, dizziness, palpitations, and fatigue—symptoms commonly associated with iron-deficiency anemia or post-illness recovery. It contains hydrolyzed collagen peptides, amino acids (including glycine and proline), and trace minerals, but it is not a source of sex hormones like estrogen or testosterone.

Early puberty—clinically termed central precocious puberty—is defined as the onset of secondary sexual characteristics before age 8 in girls and age 9 in boys. Its causes are multifactorial and include genetic predisposition, hypothalamic-pituitary-gonadal axis dysregulation, certain CNS abnormalities, and environmental endocrine disruptors—not dietary collagen supplements. No peer-reviewed clinical studies have linked ejiao ingestion to accelerated pubertal development in pediatric populations.

That said, ejiao is not routinely recommended for healthy children. Its use should be guided by a qualified practitioner trained in integrative or traditional East Asian medicine, and only when a clear pattern of deficiency—such as chronic blood deficiency confirmed through clinical assessment and possibly laboratory testing—is present. Unsupervised long-term or high-dose use may pose risks, including gastrointestinal discomfort or, rarely, allergic reactions. Moreover, inappropriate supplementation could delay diagnosis of underlying conditions causing fatigue or pallor, such as celiac disease, inflammatory bowel disease, or hematologic disorders.

Parents considering ejiao for their child should consult both a pediatrician and a licensed practitioner experienced in evidence-informed herbal medicine. A thorough evaluation—including growth velocity, bone age assessment, hormonal panels if indicated, and nutritional status—remains essential before initiating any supplement intended to influence physiological development.