1. Genetics: Genetic makeup significantly dictates a child's growth potential. 2. Nutrition: Adequate intake of nutrients is crucial for proper growth and development. 3. Hormones: Hormones like growth hormone, thyroid hormone, and sex hormones play pivotal roles. 4. Chronic Illnesses: Conditions such as congenital heart disease or chronic kidney disease can impact growth. 5. Environmental Factors: Socioeconomic status, access to healthcare, and exposure to toxins can also affect growth.