Armpit Hair at 9
Understanding Armpit Hair Development in 9-Year-Old Boys: Is It Normal?

Learn if it's normal for a 9-year-old boy to develop armpit hair and the implications of early puberty.

Puberty Changes
Is It Normal for a 9-Year-Old to Develop Pubic Hair?

Discover if it's normal for your 9-year-old daughter to have pubic hair and learn about puberty signs.