Determinants of growth and development Heredity: the most important factors Environmental factors can be improved potentially Nutrition: important factors at childhood the smaller the children s age the more important Diseases: factor that can not be neglected Seasonality: growth rate varied during the four seasons Hormone: a complex system三、Determinants of growth and development • Heredity: the most important factors • Environmental factors can be improved potentially – Nutrition: important factors at childhood, the smaller the children’s age, the more important – Diseases: factor that can not be neglected – Seasonality: growth rate varied during the four seasons • Hormone: a complex system