Why do women menstruate?

you-moiandmemoriesdecaying:

[…] as many women can tell you, it’s uncomfortable, awkward, and sometimes debilitating. So why, evolution, why?

One assumption some people might make is that that is just the way mammalian reproduction works. This isn’t true! Most mammals do not menstruate […] Of the mammals, only most primates, a few bats, and elephant shrews are among the lucky animals that menstruate […]

Awesome article!

(Source: scipsy)