Menarche is the onset of physiological events culminating in reproductive capability in females, as demonstrated by menstruation. It is among the later events of puberty. Typically, girls are between ...

In a recent study published in JAMA Network Open, researchers examined the temporal trends and inequalities in menstruation onset, time to regularity, and the role of early-life body mass index (BMI) ...

Onset of menstruation, marking a girl’s first menstrual period and the beginning of her reproductive years, is termed as menarche. Typically occurring between ages 9 and 16, menarche signals the ...