Growing Up: What is Puberty?

Puberty is the process of physical maturation that results in sexual dimorphism. It is distinct from 'adolescence,' which refers to the psychosocial and cultural transition to adulthood.

The hypothalamus releases GnRH pulses, which trigger the pituitary gland to release LH and FSH. These hormones stimulate the gonads to produce sex steroids like testosterone and estradiol, driving physical transformation.

The timing of puberty can have significant psychosocial impacts. Early or late onset can influence body image, self-esteem, and social behaviors during the transition to adulthood.

Research suggests that while the age of puberty markers has shifted since the 19th century, environmental factors like nutrition and exposure to endocrine disruptors play a role in these changes.

Males experience virilization driven by testosterone, while females experience more complex hormonal cycles involving estradiol and progesterone. These hormones regulate epiphyseal maturation and the pubertal growth spurt.