Why do women have periods?

TED-Ed Channel Youtube
Views 2,553,987 16637 1135

Published on Oct 19, 2015

View full lesson: http://ed.ted.com/lessons/why-do-women-have-periods

A handful of species on Earth share a seemingly mysterious trait: a menstrual cycle. We’re one of the select few mammals on Earth that menstruate, and we also do it more than any other animal, even though it’s a waste of nutrients, and can be a physical inconvenience. So where’s the sense in this uncommon biological process? TED-Ed describes the history and evolution of menstruation.

Lesson by TED-Ed, animation by TED-Ed.

Categoy: Education

menstruation menustruation cycle human period pregnancy reproductive health uterus fetus ted ted-ed tedx ted education womb placenta maternal cell barrier baby embryo

  • silem arod - Channel Youtube
    silem arod - 17 hours ago

    Watching this video is better than the condoms for not to get pregnant.

  • Abid Ansar - Channel Youtube
    Abid Ansar - 2 days ago

    wow you girls can send blood without dying

  • Square squirrels Box squirrels - Channel Youtube
    Square squirrels Box squirrels - 4 days ago

    what about dogs they have periods to?

  • Princess Źoya - Channel Youtube
    Princess Źoya - 4 days ago

    They did not explain it good at all 😐

  • Loki Doki - Channel Youtube
    Loki Doki - 5 days ago

    The bad thing is you can't prediect when your period stops. So it's either pain for a week or for a month ;-;

  • Mystery Girl - Channel Youtube
    Mystery Girl - 6 days ago

    I am scared to get pregnant I don’t want diabetes like isn’t my fault that the baby died but I am not being horrible to people that I have diabetes my friend has it ok I was just joking

  • Joshua Lyttle - Channel Youtube
    Joshua Lyttle - 1 week ago

    This spoke ntn

  • Lemonn Pantherr - Channel Youtube
    Lemonn Pantherr - 1 week ago

    I looked this up because me and my dog are on our period the same time and she leaves blood all over the house.

  • itsjustallee - Channel Youtube
    itsjustallee - 1 week ago

    The only reason i want to get pregnant is because i don’t have to have a period.

  • Toni666 - Channel Youtube
    Toni666 - 1 week ago

    So yeah I'm adopting

  • Crissa Plays - Channel Youtube
    Crissa Plays - 1 week ago

    dogs also minestrait

  • x Ruby x - Channel Youtube
    x Ruby x - 1 week ago

    I’m on my period and I felt like I was gonna die since it feels like I got no blood left so i decided to search this up but while I’m typing it feels like I’m gonna die

  • Anthony BravoMendoza - Channel Youtube
    Anthony BravoMendoza - 2 weeks ago

    H. H f

  • Average Normie - Channel Youtube
    Average Normie - 2 weeks ago

    Why was this in my recommended?

  • thatsideofutube 3 - Channel Youtube
    thatsideofutube 3 - 2 weeks ago

    bc life hates us

  • Keknegen kai - Channel Youtube
    Keknegen kai - 2 weeks ago

    Babies seem to be described with the characteristics of a parasite inside the human body. I would love to know more on that

  • s c - Channel Youtube
    s c - 2 weeks ago

    Even female dogs menstruate

  • Kiowa and Friends The Rebels - Channel Youtube
    Kiowa and Friends The Rebels - 2 weeks ago

    Women have periods because men can not handle them.

  • Abid Ansar - Channel Youtube
    Abid Ansar - 2 weeks ago

    Im a guy Why am i watching this🤔

  • vietnamese football - Channel Youtube
    vietnamese football - 2 weeks ago

    Like if ur a guy

  • Hannah Mitten - Channel Youtube
    Hannah Mitten - 2 weeks ago

    I thought dogs had their period?

  • Niketia Wilson - Channel Youtube
    Niketia Wilson - 2 weeks ago

    Dogs also have their cycle, PLEASE don't be misinformed

  • Im Bored - Channel Youtube
    Im Bored - 2 weeks ago

    M y d a d w i l l b e a t t h e s h i t o u t o f m e i f I s e e t h i s (Copy and paste to other period videos. Period haters only)

  • Jevon Jackson - Channel Youtube
    Jevon Jackson - 2 weeks ago

    To women it takes true will and drive to deal with bleeding and cramps. Just one word wow.

  • HaNgRy JeJeJe - Channel Youtube
    HaNgRy JeJeJe - 3 weeks ago

    Becuase they are sentences.

  • Sophia demetrion-boatright - Channel Youtube
    Sophia demetrion-boatright - 3 weeks ago

    I love how all the comments have no dislikes

  • ronny Vernon - Channel Youtube
    ronny Vernon - 3 weeks ago

    They have periods because they need to end their sentences

  • Twin animations - Channel Youtube
    Twin animations - 3 weeks ago

    *I hAVE BEen AsKIng MYseLF ThiS QueSTIon AlL mY life*

  • Veruka Hansen - Channel Youtube
    Veruka Hansen - 3 weeks ago

    That's not true. My female dog has a period every month. And also does cats

  • Sapphire Eye - Channel Youtube
    Sapphire Eye - 3 weeks ago

    0:17 And dogs