Menarche

Menarche is the term used to describe a person's first menstrual period. It's a significant milestone in female puberty, marking the beginning of reproductive capability. Typically occurring between the ages of 10 and 15, menarche signals that the body has started releasing eggs and is physically capable of becoming pregnant.

Additional Information

The timing of menarche can vary widely due to factors like genetics, nutrition, body weight, and overall health. In recent decades, the average age of menarche has been decreasing in many parts of the world, a phenomenon known as the "secular trend."

Menarche doesn't necessarily mean that ovulation has begun immediately. It often takes several months or even years after menarche for menstrual cycles to become regular and ovulatory. The first periods are often irregular and may be heavier or lighter than what becomes typical for that individual.

While menarche is a biological event, it also carries significant cultural and social meaning in many societies. Some cultures celebrate it as a rite of passage, while others may treat it more privately.