Understanding growth trajectories during child development is important for the fields of human biology, public health, medicine, and evolutionary medicine. To date, the majority of current references for childhood development and health are primarily derived from the World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC). To ensure a child is developing properly, is equipped with proper nutrition, and will sustain a healthy life through adolescence and adulthood, these measurements and standards are necessary. The current study aims to test whether or not these standards are applicable in non-industrial small-scale societies where differences from western populations include diet composition, environmental pressures, climate, economic activity, mortality rates, and childhood physical activity levels
