1. Growth Hormone Deficiency: A lack of growth hormone can result in significantly shorter stature. 2. Hypothyroidism: Low levels of thyroid hormone can lead to delayed growth and development. 3. Turner Syndrome: This genetic disorder affects females and can result in short stature and other physical anomalies. 4. Constitutional Growth Delay: Some children are late bloomers and may experience delayed growth spurts but eventually reach normal adult height.