If a child or teenager is deficient in iron it will affect growth and development, and to a certain extent it will affect growth. Iron belongs to the essential trace elements, is the living tissue components, if iron long-term deficiency, most likely to lead to iron deficiency anemia, mostly in infants and young children, the elderly, pregnant women and lactating women. If children lack iron, they are prone to irritability and lack of interest in things around them. Or hinder the development of the body, physical strength decline, to a certain extent, will affect the height, and affect the concentration and learning power. But height is related to many factors, in addition to the micronutrients in the body, but also closely related to genetics, other diet, exercise and other aspects. If you want to grow taller, you need to ensure that your body has balanced nutrition, and it is also recommended that you increase physical activity and develop good habits. If a child’s height is significantly lower than that of an adult, he or she should seek medical attention to find the cause and cooperate with the doctor if necessary.