Puberty represents a critical period of transformation in the lifespan, marking the transition from childhood to adolescence through complex biological processes that alter the structure and function of the body. It involves rapid physical growth, hormonal changes, and sexual maturation driven largely by endocrine system activity. These changes not only reshape the body but also influence emotional, social, and cognitive development, profoundly affecting adolescents’ daily lives. Understanding the biological foundations of puberty and the differences in male and female developmental patterns provides insight into the broader context of human growth and behavior during adolescence. The biological foundation of puberty begins in the brain, specifically in the hypothalamus, which activates a chain reaction within the endocrine system. The hypothalamus releases gonadotropin-releasing hormone (GnRH), which stimulates the pituitary gland to produce two key hormones: luteinizing hormone (LH) and follicle-stimulating hormone (FSH). These hormones regulate the gonads—the testes in boys and the ovaries in girls—triggering the production of sex hormones such as testosterone, estrogen, and progesterone. These hormones are responsible for the development of primary and secondary sexual characteristics. The hormonal surge signals the body to initiate growth spurts, changes in body composition, and the maturation of reproductive organs. This neuroendocrine interaction highlights puberty not merely as a physical process but