What are “Normal” Menstrual Cycles?
- The normal menstrual cycles recurs every 28 days
- The primary hormones produced are estrogen and progesterone
- Estrogen is very important for health
Severe Menstrual Disturbances
Amenorrhea: Absence of menstrual cycles for 3 months or longer
- Primary Amenorrhea: No menstrual cycles before age 15
- Secondary Amenorrhea: No menstrual cycles for 3 months or more in women who previously had menstrual cycles