Genes have a lot to do with it, as does ethnicity, physical maturity, and weight.
It really depends on the person but studies have shown that at age 12 young women start their period.
at age 12 at least
Menopause
Sometimes getting your period starts the growth process. You could be 5 ft and get your period..then A year later be 5'5'' For some people it means the end of growth and for some ...the begining.
You shouldn't get them groomed when your too young. I would say maybe 13 or so. If you start at a young age the kids might not be ready for it.
There is no set age but depends upon the physiology of the individual. Some girls have been known to begin as young as 9, while others might be 14-15 years of age. The average age of onset of menses is 11-12.Rarely puberty occurs at the age of seven alsobetween 8 and 17
your period can begin at the age of 9 or 10. but every girl is different. some girls might get their period at age 11,12,13,or even 14. your period will last up to 3-7 days. your period will end at the age of 50.
Keep practiceing and maybe you will just might get lucky.
You might hear reference to a dark age of journalism. This refers to a period in which journalism is particularly repressed.
If you are young (age 8-18), or you have only had your period for less than 2 years, it is not uncommon to miss a period ocasionally. Don't worry, nothing is wrong!
any age around 10 to 14 generally but these days it could be even younger!
War and how our military works today could be changed