Human growth hormones (HGH) are natural substances produced by the pituitary gland that stimulate growth, cell reproduction, and regeneration in humans. They play a crucial role in physical development, influencing height and muscle mass as well as helping to regulate body composition, metabolism, and overall health. HGH is often used therapeutically to treat growth disorders in children and hormonal deficiencies in adults. Additionally, it is sometimes misused for anti-aging purposes and athletic performance enhancement.