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When Does Menstruation Start?

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A young woman's first period usually starts when she least expects it. This guide is about when does menstruation start?


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By 0 found this helpful
June 11, 2012

I was just wondering if anyone had any ideas when my 11 year old will get her period. I have no idea, because all my girls got theirs when they were 13 and all the signs when they were 12. She has the signs now is she going to get them or not?

By mc4lifes from Sydney, NSW


June 11, 20120 found this helpful
Best Answer

There is no "set age". Some start as early as 9 and others into their late teens.
If nothing has happened by age 17, I would suggest a trip to the doctor.

I started when I was 8, and my daughters at 11, 13, 14, 15 and 16.

Diet plays a factor -research has shown that girls who drink a lot of milk with hormones in it tend to start earlier, girls who don't get enough iron start later. Weight plays a factor as well, as being underweight or overweight will delay or stop it (athletic women often stop during training).


Don't pressure her, it isn't anything she can control, and don't make her self conscious or worrisome over it. Actually, having one can be a pain in the rear end when you are young, so enjoy life without it! She won't have to worry about swimming or overnight slumber parties without it!

I would have the discussion with her, and make sure she has a couple pads with her in her purse, so that if the time comes to start when she isn't home, she is prepared.

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August 13, 20170 found this helpful

Just tell her about it and prepare her. No one is the same. I was 8. One of my daughters was 17. My twins were 3 years apart. This is something that can not be predicted, even by a doctor.

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August 13, 20170 found this helpful

When the breasts start developing and pubic hair and underarm hair starts growing the first period can be expected within the year.

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