According to Carson (2013), genetic and environmental causes greatly influence the maturation of human male and females. Maturation is characterized by the development of secondary sexual characteristics, a process that greatly depends on the hypothalamic-pituitary-gonadal axis. Most of the girls mature 2 to 3 years earlier than boys although the process varies from one individual to another. Luteinizing hormone and follicle stimulating hormone (FSH) are released by the pituitary gland to facilitate the maturation process in both males and females. Luteinizing hormone stimulates gonads to produce estrogen and progesterone in females, and testosterone in males. The function of the follicle stimulating hormone (FSH) is to excite the gonads to release female eggs and sperms in males. Production of both hormones, follicle stimulating hormone (FSH) and luteinizing hormone marks an important phase in development and maturation of males and females. If the pituitary glands are not in a position to release the maturation hormones, then the person’s gonads remains active but cannot facilitate the reproduction process (Carson 2013). Apart from production of sperms and ova, there are other exclusive changes that mark maturation of boys and girls. The scrotum, seminal vesicles, prostate glands and testes for boys start enlarging at the onset of maturation. The length of the penis starts increasing, as pubic and facial hair start growing (Gray et al. 2016). In girls, pubic and axillary hair starts to grow and breasts starts developing. Females receive their monthly menses and their hips broaden. Most girls begin to gain weight and more fat is deposited, mostly around the hips, thighs and buttocks. The inner lips of the vulva, Labia minora, develops.