What age group is primarily affected by Tanner stage III breast development?

Tanner stage III breast development occurs as part of the physical maturation process during puberty, which typically takes place between ages 9 and 14. In this stage, breast tissue increases in size, and the areola and nipple begin to form a more pronounced elevation.

The age range of 13-14 years aligns with this developmental milestone, as most girls enter Tanner stage III between ages 11 and 14. At this stage, they may also experience additional signs of puberty, including the onset of menstruation and increased body fat distribution. Understanding the Tanner stages is crucial for assessing normal growth and development during adolescence, making this age group the most commonly associated with Tanner stage III breast development.