A woman's first menstruation.
The establishment or beginning of the menstrual function.
the onset of menstrual periods during puberty.
the first menstrual bleeding (period). The usual age range is from 10-15 with the average about 12.5 years. The age of menarche has dropped (called the "secular trend") during the past century but the age of menarche now appears to be stabilizing in developed countries in the 21st century.
The initial onset of menstrual periods in a young woman.
the establishment of the menstrual function, the time of the first menstrual period flow.
Age at which menstrual periods start.
a woman's first menstral period
the first menstrual period of a girl in puberty.
the onset of menstruation, signalling the body's coming readiness for childbearing.
The beginning of the menstrual cycle.
A girls first menstrual cycle.
The beginning of menstrual function; the first menstrual period, which normally occurs at puberty.
The age at which a girl has her first period. It marks the beginning of her childbearing years.
The age at which menstruation starts.
The time when a girl starts to have monthly periods.
stage of sexual development in a girl marked by the first period.
When a girl first begins her menstrual cycles.
the time when a woman has her first menstruation.
The first time a young woman has her menstrual period. Menarche before age 12 is a risk factor for developing breast cancer.
The beginning of menstruation; the first menstrual period.
The time in a young woman’s life when menstrual periods begin.
The appearance of first menstrual period.
The time when a women has her first menstrual period.
The time in that menstruation first begins.
First menstruation. (page 115)
The first menstrual period or beginning of menstruation.
A woman's first menstrual period.
Time in a woman's life when menstruation starts.
the beginning of a female's monthly cycle.
The onset of menstruation in girls.
The beginning of menstruation; one of the signs of puberty.
The onset of menstruation; the first menstrual period.
Pronounced “men-ark-ieâ€; this is the medical term for first menstruation.
is the term given to the onset of menstruation in females. This occur at puberty and can be anywhere between the ages of 10 and 17, depending on the individual.
the beginning of menstruation, usually occurring between the ages of 11 and 13. (131)
The first menstrual period a girl experiences at the start of reproductive life.
The first menstruation in a woman's life.
the time when a woman has her first menstual period
Girl's first menstruation. (335)
onset of menstrual function.
a young woman's first period.
The first menstrual period or the establishment of the menstrual function.
Menarche is the beginning of menstrual function.
the first menstruation; usually occurs between 9 and 17 years of age
The time when a woman first menstruates.
in adolescent girls, the onset or beginning of cyclic menstruation
A girl's first menstrual period.
The time when a woman has her first menstrual period.
First occurrence of menstruation.
Age at which menstruation begins in female.
The time at which menstruation first begins.
The first menstrual period, indicative of sexual maturation in a girl.
Menarche (IPA: ) is the first menstrual period, or first menstrual bleeding. From both social and medical perspectives it is often considered the central event of female puberty, as it signals the possibility of fertility. Timing of menarche is influenced by both genetic and environmental factors, especially nutritional status.