Medically reviewed by Renita White, MD Key Takeaways Amenorrhea is the medical term for not having periods when you are not pregnant.If you haven't had a period by age 15 (referred to as primary ...
THURSDAY, Oct. 30, 2025 (HealthDay News) — Puberty is the time when children’s bodies start to make hormones that lead to physical changes and signs of maturation. It prepares the body for ...