When do periods start?
Menarche, or the first time when periods start in a girl, is a biological process that occurs as a result of hitting puberty. It’s a sign that your body is ready to begin reproduction. Puberty is the period of your life when your body goes through a lot of changes which typically start between the ages of 12 and 15 years. For example, on the exterior, you’ll notice hair starting to grow under your arms and around your pubic area, as well as the development of your breasts. On the inside, you begin to have periods as a result of the release of female hormones estrogen and progesterone. 1 For most girls, periods start when she is about 12 years old, though it varies from person to person. Some girls may begin as early as 8 years while others may start as late as 15 years depending on family history, race, food, environment, and weight. Period start age is usually any number between 10 and 15. 2 What causes periods to occur? Changes in hormone levels is the main cause behind the start o