The first menstruation can be as young as 9. In the US the average age for girls to start menstruating is 12.
menarche; 12
Yes, a female can have a menstrual cycle at 9 years old. The average age of menarche (first period) is 13 years old, but it is possible for females to enter puberty and start ovulating (thus menstruating) from only 9 years old.
Menopause starts somewhere between 45-55 years old in most people, this is the start of the winding down of the reproductive cycle so menstrual cycles become irregular. When menstrual cycles stop all together can vary greatly from person to person after menopause.
Technically, dogs do not have menstrual cycles - only primates menstruate. However, dogs do have estrus or heat cycles, and a female dog can start cycling at about 6 months of age.
It differs among girls, but it usually starts around 12 or 13
The menstrual cycle is the reproductive cycle of a woman, while she is of reproductive age and not suppressing her cycles with hormonal birth control, she is always experiencing her menstrual cycles. Hunger is a basic human need, it lets you know when to eat, you will always be hungry throughout your entire menstrual cycle - this is called being human.
Only females over 6 months of age will have a menstrual cycle. This will happen once every six months and last for 10-14 days.
is a monthly sexual cycle in a women of reproductive age group which enables them the capacity toreproduce
Figuring out women of any age has been a mystery ever since man could ask the question. Due to women's hormones (generally starts at puberty .. the general age being 12, but perhaps can start as young as 10) they can have hormonal changes when girls go through their menstrual periods (bleeding once a month.) For a few days they can be very cranky, but once they start into their monthly menstrual cycle they are happy again. The best you can do is be there when she is happy and duck when she isn't.
10 to 16 years old
You can have a baby anytime after you have your menstrual cycle up until menopause.