why do women have periods
2006-12-21 23:06:35 · 7 answers · asked by jonathan_ambrose_morrison 1 in Health ➔ Women's Health
When you have a question like this, the way to find out the answer is to ask, "What if they didn't?"
Maintaining the female body in a constant state of fertility would use up a lot of energy (See Natalie Angier's "Woman: An intimate geography") and would probably have made our ancestors get pregnant too easily and quickly, making it hard for them to care for all their babies. So we evolved a technique in which our body only is fertile for a few days a month. And when we don't need all that cushy uterine lining and extra blood flow, well, it's gotta go somewhere, hence the period.
Reproductive strategies are always interesting, I think.
2006-12-22 01:30:52 · answer #1 · answered by MissA 7 · 0⤊ 0⤋
They have periods to shed the lining of the uterus. Each month the uterus prepares for a fertilized egg to be implanted. When it doesn't happen, it sheds the lining. This is what women see as a period.
2006-12-22 08:01:23 · answer #2 · answered by DNA 6 · 0⤊ 0⤋
So they can have babies. Every month, a woman's womb prepares itself to nest a baby - when it turns out we're not pregnant, the womb sheds the nesting material.
2006-12-22 07:10:09 · answer #3 · answered by They call me ... Trixie. 7 · 0⤊ 0⤋
so that we can have baby's! our bodies realease an egg every month then if it is not fertial then our body discharge the egg via a period.
2006-12-22 07:09:59 · answer #4 · answered by wickedrose24752 1 · 0⤊ 0⤋
You are in serious need of some biology classes.
2006-12-22 07:09:57 · answer #5 · answered by Anonymous · 0⤊ 0⤋
because we do its the way are bodys work and also the way we can have a baby.
2006-12-22 08:25:30 · answer #6 · answered by Kaylee M 2 · 0⤊ 0⤋
i really don't no y i don't like oeriods it takes away your life & money
2006-12-22 07:11:07 · answer #7 · answered by jamie 3 · 0⤊ 0⤋