WEBVTT - SYSK Selects: Why do men have nipples?

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<v Speaker 1>Hey, everybody, this is Chuck with this uh Saturday select

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<v Speaker 1>edition of Stuff you Should Know? And this week I

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<v Speaker 1>picked out a little show called why do Men Have Nipples?

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<v Speaker 1>And that's how you have to say it in your

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<v Speaker 1>head when you read it out loud. This from January,

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<v Speaker 1>and if I remember correctly, Um, it's just kind of

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<v Speaker 1>an interesting episode. I think Josh and I we're looking

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<v Speaker 1>at each other one day with their shirts off. I

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<v Speaker 1>was like, why you have nipples? Why do you have nipples?

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<v Speaker 1>And that's generally how most of our shows get started.

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<v Speaker 1>So give it a listen and I hope you enjoy it.

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<v Speaker 1>Welcome to Stuff you Should Know from House Stuff Works

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<v Speaker 1>dot com. Hey, and welcome to the podcast. I'm Josh Clark,

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<v Speaker 1>There's Charles W. Chuck Bryant, and we're doing this. We're

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<v Speaker 1>doing it whether you like it or not. Yeah, we're

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<v Speaker 1>recording our podcast Stuff you Should Know. Probably no because

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<v Speaker 1>you tuned in, so welcome and if it was an accident, Hey,

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<v Speaker 1>welcome to the party. Talk about serendipity. You're about to

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<v Speaker 1>learn about male nipples. Yeah you want to talk about

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<v Speaker 1>a party? Yeah? You got him? I got him. We

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<v Speaker 1>all do. Uh, do you want to talk about chromosomes

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<v Speaker 1>for a second. Sure, okay, chuck, uh, you and I

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<v Speaker 1>each have twenty three chromosomes in our body. We talked

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<v Speaker 1>a little bit in Designer Children. I think, yeah about

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<v Speaker 1>little genetics over We're not gonna go into that now.

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<v Speaker 1>But um, the twenty three chromosomes. H if you put

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<v Speaker 1>a man in a woman side by side, or their

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<v Speaker 1>chromosomes side by side, twenty two of the twenty three

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<v Speaker 1>chromosomes are going to be exactly alike. It's that twenty

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<v Speaker 1>three that gets you. The twenty three chromosome either has

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<v Speaker 1>a pair of xes or an X and a Y.

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<v Speaker 1>Pair of xes equals a woman, X Y equals a man. Okay,

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<v Speaker 1>we're not that far apart. We're really not. And that

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<v Speaker 1>becomes very very clear when we're in utero because sexual dimorphism,

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<v Speaker 1>which is the the inward and outward differences between genders

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<v Speaker 1>between male and female, like who who's in ha haas

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<v Speaker 1>and that kind of stuff. Um, those are all uh,

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<v Speaker 1>those are all hammered out in the course of our

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<v Speaker 1>development on the twenty three chrome zone. Right, A lot

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<v Speaker 1>of it you come out with, right, you were born

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<v Speaker 1>with a vagino or a penis, right, Um, but a

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<v Speaker 1>lot of it is also set up to be kicked

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<v Speaker 1>in when puberty happens. That's right, but still there's differences,

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<v Speaker 1>there's changes, and it's all because of this twenty three

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<v Speaker 1>chrome zone. Some of the things though, can go either

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<v Speaker 1>way and depending on what happens when puberty comes along. Um,

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<v Speaker 1>either nothing's going to happen to these to this equipment,

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<v Speaker 1>I guess you could call it yea or um. A

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<v Speaker 1>lot of crazy things happened to it. And one of those, uh,

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<v Speaker 1>the good examples of this are nipples. There's a really

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<v Speaker 1>great question, why do men have nipples? Chuck? Yeah, I

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<v Speaker 1>have a funny little story about this. My sister and

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<v Speaker 1>I were hanging out about about fifteen years ago, and

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<v Speaker 1>I was They had a male dog and I was

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<v Speaker 1>rubbing the belly and the dog had very like just

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<v Speaker 1>pronouncing nipples more so than you you would usually see

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<v Speaker 1>on a male dog. And I guess I never noticed before,

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<v Speaker 1>and I was just like, I was kind of grossed out.

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<v Speaker 1>I was like, what is your dog nipples? And she's like,

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<v Speaker 1>you have nipples? And then it just like it was

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<v Speaker 1>an awakening my mind. Yeah, It's like, wow, you're right,

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<v Speaker 1>I do why And I never really researched things like

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<v Speaker 1>this back then, and uh, now I know why. Now

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<v Speaker 1>we know why. Yeah, and we should say this is

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<v Speaker 1>um the generally accepted explanation. It's not necessarily scientific fact,

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<v Speaker 1>but it is um. This is pretty much why. Ye,

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<v Speaker 1>most mammals, in fact, most male mammals have nipples. I

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<v Speaker 1>think mice, stallions and uh platyppie. Yeah, the male platypus

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<v Speaker 1>is among the handful of animals that of mammals that

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<v Speaker 1>where the boys are born nipple free, which is weird

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<v Speaker 1>because um, as Conger points out Christen Conger from Stuff

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<v Speaker 1>Mom Never told you she wrote this article, and um

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<v Speaker 1>she points out that you can make the case that

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<v Speaker 1>mice are more evolved in that respect than human males. Yeah.

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<v Speaker 1>Ours could be a flaw. Yeah, um, we'll get to that. Well,

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<v Speaker 1>let's talk about this. So they're back in uh nine,

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<v Speaker 1>right before Y two K it's y two K fever,

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<v Speaker 1>Yale University researchers released the study that said, Hey, we've

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<v Speaker 1>gotten to the bottom of this mystery of why or

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<v Speaker 1>how male mice don't grow nipples. They're just completely seriously,

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<v Speaker 1>go out in your yard right now, trap a mouse,

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<v Speaker 1>pick it up by its tail and examine it's some

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<v Speaker 1>little belly, no nipples, Yeah, nothing, or if it's got nipples,

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<v Speaker 1>that means it's a little lady exactly. That's the way

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<v Speaker 1>you tell. That's one of the ways you tell with mice.

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<v Speaker 1>And it's because of a protein pth little r P. Yeah.

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<v Speaker 1>It's always so exciting when they give them names like this. Uh.

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<v Speaker 1>After mice are after their memory tissue starts to form,

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<v Speaker 1>produces this protein. Uh. And in male mice it signals

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<v Speaker 1>the cells to form male hormone receptors and uh, it

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<v Speaker 1>basically destroys the tissue. Yeah, like in utero. Correct, Yes,

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<v Speaker 1>because boy mice and male and female mice are all

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<v Speaker 1>they all develop mammory tissue, which gives you all the

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<v Speaker 1>equipment for nipples and breasts and milk ducks and all

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<v Speaker 1>that stuff. They just destroy theirs before they're born. Yeah,

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<v Speaker 1>that protein signals that for to be destroyed in male mice. Uh,

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<v Speaker 1>prepare for the mind blower. Now, boys and girls as

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<v Speaker 1>humans undergo a very similar process in utero as well. Um,

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<v Speaker 1>before that sexual dimorphism that's really carried out by the

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<v Speaker 1>twenty three chromosome begins. We both both genders start to

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<v Speaker 1>develop um memory tissue, uh, and develop all the equipments

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<v Speaker 1>called milk lines. They're like kind of like calls it

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<v Speaker 1>the plumbing. We have the same plumbing exactly, which is

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<v Speaker 1>kind of funny and true. Yeah, um we and we

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<v Speaker 1>developed this plumbing before it's decided or before we start

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<v Speaker 1>to um develop sexual traits. So it's almost like if

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<v Speaker 1>you look at a timeline of sex sexual development, the

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<v Speaker 1>nipples come first, so that they're not associated as far

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<v Speaker 1>as the I guess nature is concerned with male or

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<v Speaker 1>female humans the same thing. Yeah, So we don't have

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<v Speaker 1>a protein that takes care of this um the nipples

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<v Speaker 1>and males. So men are and boys and girls are

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<v Speaker 1>born with pretty much exactly the same setup until puberty,

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<v Speaker 1>that's right, And that's when the hormones kick in. Estrogen

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<v Speaker 1>and girls is going to cause breast growth and mamory

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<v Speaker 1>gland development, and that's when things diverge. You know what

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<v Speaker 1>It really stood out to me on this um that

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<v Speaker 1>means that our nature's default setting as far as humans

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<v Speaker 1>are concerned, it's female. Uh yeah, I think it's pretty neat.

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<v Speaker 1>It's pretty neat. Well, you know, women are the seed

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<v Speaker 1>of everything, seed of life. Um, so it's what everybody

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<v Speaker 1>calls them, the seed of life. So um. The the

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<v Speaker 1>simple answer then is the reason we have nipples is

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<v Speaker 1>because we've always had nipples. And through the years, evolution

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<v Speaker 1>never said, you know what, you don't need nipples. No,

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<v Speaker 1>And um, the I think the case has been made.

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<v Speaker 1>The reason men still have nipples because nipples are so

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<v Speaker 1>vital to female reproductive success that, um, there's no Conger

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<v Speaker 1>points out, there's no adaptive pressure to select nipples out

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<v Speaker 1>of men. Yeah, it's such a vital function. Right, So

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<v Speaker 1>it's like we don't want to possibly mess with anything,

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<v Speaker 1>So everybody gets nipples. Okay, you just live with it. Yeah. Yeah,

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<v Speaker 1>but that's why men have nipples because nature's default setting

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<v Speaker 1>for humans is girls. Yeah. That's interesting. And um, I

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<v Speaker 1>love my little nipples. I'll just come out and say it.

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<v Speaker 1>Do you do well? I think it would be odd

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<v Speaker 1>to not have them. I don't think so. It's a

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<v Speaker 1>little getting used to, but I think, um, I think

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<v Speaker 1>it would not look on you know, we did our

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<v Speaker 1>our Barbie podcasts that come out already. Yeah, and there

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<v Speaker 1>are web there are people on the web that will

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<v Speaker 1>teach you how to make nipples. For your Barbie dolls.

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<v Speaker 1>I saw their kindles. Yeah, yeah, like very realistic, looking,

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<v Speaker 1>very realistic. But yeah, you look like a kin doll.

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<v Speaker 1>This would just be weird. I don't think ken looks

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<v Speaker 1>abnormal without nipples because it's a doll. It also doesn't

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<v Speaker 1>look at normal without a penis. That's true, you know. Yeah,

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<v Speaker 1>I think you would be the little distressed if you

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<v Speaker 1>woke up one day without nipples. Or maybe you'd love it.

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<v Speaker 1>Maybe it's a new lease on life for you. Yeah,

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<v Speaker 1>I'd be like, just go bare chested everywhere. Great, I'm

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<v Speaker 1>a freak. Yeah yeah. Um, so we said, Chuck, something

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<v Speaker 1>that's kind of interesting. If you ask me, if you

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<v Speaker 1>take a six year old boy and a six year

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<v Speaker 1>old girl, prep bess boy and pre pubescent girl, and

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<v Speaker 1>you compared their um, their memory glands, the whole memory

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<v Speaker 1>operation they've got going on, they're virtually the same. And

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<v Speaker 1>it's not until estrogen comes along that the the differences

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<v Speaker 1>really change. The fat develops, so the breasts get bigger. Um,

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<v Speaker 1>these milk ducks developed. You've You've got all this this

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<v Speaker 1>process that's that just kind of takes these things that

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<v Speaker 1>are almost latent in turns them into functioning breasts. Right, Um,

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<v Speaker 1>if we've found if you expose a man to estrogen,

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<v Speaker 1>he could conceivably lacktate himself. That's part two of this.

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<v Speaker 1>We didn't even put that in the title because we

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<v Speaker 1>didn't want to just blow your minds right out of

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<v Speaker 1>the gate. But the point is is men have nipples

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<v Speaker 1>because girls have nipples, and men can lack take because

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<v Speaker 1>women can lack take. Yeah, and in fact, as little babies, um,

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<v Speaker 1>you and I might have lactated. Who knows when the

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<v Speaker 1>hormone prolactin is what facilitates breast milk production, and new

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<v Speaker 1>moms um when they can actually pass this along in

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<v Speaker 1>utero to their fetus, and that little baby can come

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<v Speaker 1>out if they get enough of that passed along with

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<v Speaker 1>the ability to lactate both little boys and little girl,

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<v Speaker 1>and it's called witches milk um only last couple of weeks. Usually, yeah,

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<v Speaker 1>I'll bet it's a distressing couple of weeks if you're

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<v Speaker 1>the parent, like, what is going on? Well, I'm sure

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<v Speaker 1>it's explained. There's all sorts of weird things that can

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<v Speaker 1>happen right away that you're like, what and uh, I

0:11:14.480 --> 0:11:17.160
<v Speaker 1>think Usually doctors like, don't worry that a little fun

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<v Speaker 1>thing else the brain will grow together. Are not the brain,

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<v Speaker 1>The skull will grow together at some point. Don't worry

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<v Speaker 1>about this, just don't pat it on ahead an Um,

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<v Speaker 1>So that yeah, which is milk? It occurs, and I

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<v Speaker 1>don't know how rare it is, she didn't say, but

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<v Speaker 1>is it? Yeah? Even rarer? Is um spontaneous lactation in

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<v Speaker 1>adult men. Yes, and that's called galacteria, which does not

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<v Speaker 1>sound very pleasant. No it doesn't. But essentially, if um,

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<v Speaker 1>if you lack enough testosterone that your estrogen levels are

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<v Speaker 1>comparatively high, you can um suffer galacteria, which basically is

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<v Speaker 1>male lactation. Spontaneous elactation. Yeah, but um, Congor points out,

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<v Speaker 1>it could be you know, the cause of alarm though, uh,

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<v Speaker 1>if you're an older man, correct, is that just because

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<v Speaker 1>of the testosterone deficiency? Okay, yeah, but Darwin thinks, hey,

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<v Speaker 1>maybe early man breastfed, like full on breastfed, and who knows,

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<v Speaker 1>maybe they did. Who's to say? Are we to say? No,

0:12:21.920 --> 0:12:26.800
<v Speaker 1>Charles Darwin? Yeah, Um, so you've got galacteria is a possibility,

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<v Speaker 1>which is milk is possibility? Two ways that um human

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<v Speaker 1>males can spontaneously lactate and we're not the only ones

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<v Speaker 1>who do. There's a type of bat that was discovered

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<v Speaker 1>to lactate spontaneously, and a surprising amount of animals over

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<v Speaker 1>the course of the last century or two have been

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<v Speaker 1>exposed to all sorts of different tests to make them

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<v Speaker 1>spontaneously lactate. UM. A steer was made to lactate. Do

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<v Speaker 1>you know how surprised that steer must have been? UM.

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<v Speaker 1>But we've found that if you can, if you can

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<v Speaker 1>increase estrogen levels and trigger the release of prolactin, you

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<v Speaker 1>can make men produce milk. And it happens sometimes. So

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<v Speaker 1>the prolactin is UM is produced by the thyroid gland

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<v Speaker 1>right tuitary gland. Yeah, and women when they have a

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<v Speaker 1>little baby, they it really ramps up like ten times

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<v Speaker 1>as much exactly. So what they found is that UM

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<v Speaker 1>after a baby is born. Dad's suffer, I guess suffer

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<v Speaker 1>it's not the right word. Dad's experience an increase in

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<v Speaker 1>prolactin production too. Normally, it's not it's not enough to

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<v Speaker 1>cause lactation, but they suspect you can make it happen

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<v Speaker 1>if you are okay, So this is really strange. If

0:13:47.200 --> 0:13:50.800
<v Speaker 1>you hold a baby to your breast and your nipple

0:13:51.040 --> 0:13:53.360
<v Speaker 1>and your man and you're the father, so you're already

0:13:53.400 --> 0:13:57.440
<v Speaker 1>kind of like prolactin high. You could conceivably trigger the

0:13:57.440 --> 0:13:59.959
<v Speaker 1>production of milk if you did that repeatedly over the

0:14:00.880 --> 0:14:03.200
<v Speaker 1>over the course of like a couple of weeks. Yeah,

0:14:03.200 --> 0:14:07.439
<v Speaker 1>it's like it's a physiological response and biological I guess

0:14:07.480 --> 0:14:09.640
<v Speaker 1>sort of all wrapped up into one, and you can

0:14:09.679 --> 0:14:13.200
<v Speaker 1>have like a sympathy lactation almost. Yeah, and it's happened

0:14:13.240 --> 0:14:16.480
<v Speaker 1>two thousand two in Sri Lanka, right. Yeah. Um. I

0:14:16.480 --> 0:14:18.480
<v Speaker 1>didn't actually get to look this guy up, so I

0:14:18.480 --> 0:14:20.320
<v Speaker 1>don't know a whole lot about him other than the

0:14:20.360 --> 0:14:23.000
<v Speaker 1>fact that he breastfed his daughters after his wife died. Yes,

0:14:23.040 --> 0:14:27.720
<v Speaker 1>his wife died during a childbirth and he took over. Wow,

0:14:27.760 --> 0:14:32.920
<v Speaker 1>that's amazing. But another way to um lactat as if

0:14:32.920 --> 0:14:38.240
<v Speaker 1>you're starving chuck. Yeah. Um, there was this one pow camp,

0:14:38.320 --> 0:14:42.360
<v Speaker 1>Japanese pow camp, and just one there was five cases

0:14:42.360 --> 0:14:48.720
<v Speaker 1>of men lactating, uh, spontaneously for each other. No, you

0:14:48.720 --> 0:14:52.120
<v Speaker 1>would think, Um, actually, what what happens is so your

0:14:52.520 --> 0:14:58.120
<v Speaker 1>your pituitary gland produces prolactin um and your liver is

0:14:58.560 --> 0:15:03.400
<v Speaker 1>typically charged with um eating up excess hormones. Right. Um,

0:15:03.440 --> 0:15:05.640
<v Speaker 1>when you're starving, both of them kind of slow down.

0:15:05.880 --> 0:15:09.359
<v Speaker 1>But when you start to eat normally again, your petuitary

0:15:09.360 --> 0:15:12.720
<v Speaker 1>gland starts functioning quicker than your liver, so you have

0:15:12.800 --> 0:15:17.120
<v Speaker 1>higher levels of hormones, including prolactant. Hence you have starving

0:15:17.160 --> 0:15:22.320
<v Speaker 1>men who lack tate. Wow, that's a reality show some

0:15:22.400 --> 0:15:55.400
<v Speaker 1>sort of island location islands, I don't know. And there

0:15:55.440 --> 0:15:59.280
<v Speaker 1>there's a tribe, the Acca pygmy tribe in Africa. There's

0:15:59.280 --> 0:16:03.000
<v Speaker 1>about out on them and this dude it was documented

0:16:03.040 --> 0:16:05.560
<v Speaker 1>that they men breastfeed their children and this dude went

0:16:05.600 --> 0:16:10.600
<v Speaker 1>and live with them. And uh, not only that, it's amazing.

0:16:10.640 --> 0:16:13.280
<v Speaker 1>They're they're known as the best fathers in the world

0:16:13.680 --> 0:16:18.640
<v Speaker 1>because they spend forty seven percent of their time um

0:16:20.400 --> 0:16:22.320
<v Speaker 1>percent of the time their babies are within arm's reach

0:16:22.840 --> 0:16:26.240
<v Speaker 1>of the father, which is far and away more than

0:16:26.280 --> 0:16:30.240
<v Speaker 1>any other culture in the history of the world. And

0:16:30.280 --> 0:16:33.960
<v Speaker 1>the gender roles in this Accat tribe are completely interchangeable.

0:16:34.400 --> 0:16:36.240
<v Speaker 1>Like sometimes the men go out and hunt, the women

0:16:36.280 --> 0:16:38.400
<v Speaker 1>take care of things. Sometimes the women go out and

0:16:38.480 --> 0:16:41.480
<v Speaker 1>hunt and the men watch the clay pots and take

0:16:41.520 --> 0:16:44.200
<v Speaker 1>care of the children, and it's just they don't know

0:16:44.440 --> 0:16:48.440
<v Speaker 1>gender roles like that. It's just completely interchangeable. It's pretty cool.

0:16:48.480 --> 0:16:51.000
<v Speaker 1>That is very cool. Um. And that's a that was

0:16:51.000 --> 0:16:54.240
<v Speaker 1>a question that kind of Darwin raised, like, well, wait

0:16:54.280 --> 0:16:56.760
<v Speaker 1>a minute, maybe we used to breastfeed. Men used to breastfeed,

0:16:56.800 --> 0:17:00.280
<v Speaker 1>and that's why we have this, which would make it vestigial, right,

0:17:00.360 --> 0:17:02.680
<v Speaker 1>like wisdom teeth appendix. It's something that we used to

0:17:02.760 --> 0:17:06.440
<v Speaker 1>use that we don't anymore. So it's just superfluous um.

0:17:06.680 --> 0:17:10.320
<v Speaker 1>Or it's possible that we can in a pinch do it,

0:17:10.600 --> 0:17:13.720
<v Speaker 1>which would not make a vestigial because we we could

0:17:13.720 --> 0:17:16.639
<v Speaker 1>still conceivably use it like thead in Sri Lanka, the

0:17:16.640 --> 0:17:21.639
<v Speaker 1>aka um the I guess the big question that it

0:17:22.000 --> 0:17:26.520
<v Speaker 1>underlines is like like why if men can do it,

0:17:26.600 --> 0:17:30.760
<v Speaker 1>why aren't we Yeah, why why wouldn't you do that?

0:17:30.840 --> 0:17:35.119
<v Speaker 1>Especially if we live in generally monogamous cultures? Well, I

0:17:35.160 --> 0:17:38.080
<v Speaker 1>think probably because of the evolution, because women did it

0:17:38.119 --> 0:17:40.919
<v Speaker 1>for tens of thousands of years. Only like if we

0:17:40.960 --> 0:17:43.280
<v Speaker 1>had kept doing it, if early man did do that

0:17:43.760 --> 0:17:46.000
<v Speaker 1>and they just kept doing it, then today you and

0:17:46.040 --> 0:17:48.399
<v Speaker 1>I might it might be like, hey, I'll pump and

0:17:48.440 --> 0:17:50.439
<v Speaker 1>dump today honey, exactly, don't worry about it. So let

0:17:50.440 --> 0:17:53.320
<v Speaker 1>me ask you this, if we stopped, if we used

0:17:53.359 --> 0:17:55.239
<v Speaker 1>to do it, even if we didn't used to do it,

0:17:55.560 --> 0:17:58.080
<v Speaker 1>the very fact that we're equipped to do it, like

0:17:58.240 --> 0:18:00.520
<v Speaker 1>under the right conditions, under the right chem coll baths,

0:18:00.560 --> 0:18:03.879
<v Speaker 1>you and I could lac take right now, right, let's

0:18:03.920 --> 0:18:06.840
<v Speaker 1>have a party. As our culture has become more and

0:18:06.840 --> 0:18:10.040
<v Speaker 1>more monogamous, and it's we get further and further away

0:18:10.080 --> 0:18:14.479
<v Speaker 1>from males going around and spreading their DNA with as

0:18:14.560 --> 0:18:19.680
<v Speaker 1>many mates as possible and instead pair up. Then, um,

0:18:19.720 --> 0:18:22.800
<v Speaker 1>it's entirely possible that ten thousand years from now, men

0:18:22.880 --> 0:18:26.480
<v Speaker 1>and women will both breastfeed. We've got the equipment. It's possible.

0:18:26.520 --> 0:18:28.200
<v Speaker 1>It will just get easier and easier for us to

0:18:28.240 --> 0:18:31.720
<v Speaker 1>do it, and then we will breastfeed as well. Interesting

0:18:32.400 --> 0:18:35.960
<v Speaker 1>it is, Well, it's apparently quite a bonding experience between

0:18:36.040 --> 0:18:41.359
<v Speaker 1>mother and child, and so I do it. Jerry just laughed.

0:18:42.640 --> 0:18:45.920
<v Speaker 1>I was not breathfed, however, Oh you weren't, now, man,

0:18:46.080 --> 0:18:48.640
<v Speaker 1>I was the child number three, and um, your mom

0:18:48.720 --> 0:18:50.359
<v Speaker 1>was over it. Yeah, she's just like I can know

0:18:50.440 --> 0:18:53.719
<v Speaker 1>more so, Uh, I've never looked into the ramifications of

0:18:53.720 --> 0:18:56.320
<v Speaker 1>that psychologically if that matters. It seems like you turned

0:18:56.359 --> 0:18:59.679
<v Speaker 1>out Okay, no comment. So before we sign off, I

0:18:59.680 --> 0:19:02.879
<v Speaker 1>guess we should raise the point that because we do

0:19:03.040 --> 0:19:06.520
<v Speaker 1>have a lot of the same anatomy underneath, UH, men

0:19:06.600 --> 0:19:10.000
<v Speaker 1>can get breast cancer. Um, it's not rare, but it's

0:19:10.040 --> 0:19:12.720
<v Speaker 1>not super common. I think in the two thousand twelve

0:19:13.240 --> 0:19:18.120
<v Speaker 1>about American men were diagnosed with breast cancer, and so

0:19:18.280 --> 0:19:21.840
<v Speaker 1>it happens. You never hear about it there. There's nothing

0:19:21.880 --> 0:19:24.280
<v Speaker 1>to be ashamed of guys. And that's that's a high

0:19:24.359 --> 0:19:27.600
<v Speaker 1>enough rate to say for some to say like, well,

0:19:27.640 --> 0:19:30.679
<v Speaker 1>then that means that nipples should be selected out in

0:19:30.800 --> 0:19:34.760
<v Speaker 1>men and probably will eventually while they're in lies. What

0:19:34.800 --> 0:19:36.479
<v Speaker 1>we mentioned earlier is the fact that it could be

0:19:36.520 --> 0:19:40.399
<v Speaker 1>just a flaw, an adaptive flaw over the years. Yeah,

0:19:40.440 --> 0:19:44.119
<v Speaker 1>what about um, third nimples, additional nipples. Did you know

0:19:44.160 --> 0:19:46.960
<v Speaker 1>that they happen most frequently in males and on the

0:19:47.040 --> 0:19:50.959
<v Speaker 1>left side. It's interesting one in forty newborns has an

0:19:50.960 --> 0:19:54.520
<v Speaker 1>extra nipple. Yeah, a lot of I mean, have you

0:19:54.560 --> 0:19:57.480
<v Speaker 1>ever seen these? Yeah, they don't usually look like a

0:19:57.800 --> 0:20:00.399
<v Speaker 1>full on Sometimes it looks like a birth the mark

0:20:00.520 --> 0:20:02.800
<v Speaker 1>or something like that. Um, it has a tooth growing

0:20:02.840 --> 0:20:07.160
<v Speaker 1>in it. But um, yeah, Chandler had the third nipple

0:20:07.200 --> 0:20:10.920
<v Speaker 1>and friends, right, all right, that's superfectly sod crusty the clown. Really,

0:20:11.280 --> 0:20:13.600
<v Speaker 1>I didn't think I knew that. Yeah, one in forty

0:20:13.600 --> 0:20:15.320
<v Speaker 1>that's way more common than I think. That means that

0:20:16.000 --> 0:20:17.639
<v Speaker 1>I know if you dudes have a third nipple. They

0:20:17.960 --> 0:20:20.520
<v Speaker 1>just hadn't told me. I don't think I know forty people.

0:20:50.560 --> 0:20:56.160
<v Speaker 1>You're so weird. Uh you got anything else? Nope? Okay. Well, um,

0:20:56.200 --> 0:20:59.920
<v Speaker 1>if you want to learn more about male nipples, male actation,

0:21:00.040 --> 0:21:04.960
<v Speaker 1>and evolution vestigial stuff, you can type in why do

0:21:05.080 --> 0:21:07.800
<v Speaker 1>men have nipples in the search part how stuff works

0:21:07.840 --> 0:21:10.240
<v Speaker 1>dot Com and it'll bring up this article. And I

0:21:10.240 --> 0:21:16.800
<v Speaker 1>said search bar, which means it's time for listener mail. Uh. Well, whoa, whoa.

0:21:16.960 --> 0:21:21.600
<v Speaker 1>I guess I need to stop myself stop. Uh. We

0:21:21.680 --> 0:21:24.240
<v Speaker 1>have a television show coming out where I played Josh,

0:21:24.320 --> 0:21:27.040
<v Speaker 1>you play Chuck. And the television show is called Stuff

0:21:27.040 --> 0:21:30.560
<v Speaker 1>You Should Know. Um and uh it's coming out on

0:21:30.680 --> 0:21:36.639
<v Speaker 1>Science Channel January nineteenth, Saturday at ten pm two episodes

0:21:36.800 --> 0:21:39.040
<v Speaker 1>for the big debut. That's right, and we are debuting

0:21:39.080 --> 0:21:42.359
<v Speaker 1>after the season three premiere of Idiot Abroad with Ricky

0:21:42.400 --> 0:21:45.840
<v Speaker 1>Jervais and Carl Pilkington. Yes, which we're excited about. That's

0:21:45.840 --> 0:21:48.440
<v Speaker 1>a great lead in for us. And if you don't

0:21:48.440 --> 0:21:51.120
<v Speaker 1>have cable and you don't have Science Channel, or even

0:21:51.160 --> 0:21:53.040
<v Speaker 1>if you do and you're like I love that and

0:21:53.080 --> 0:21:55.680
<v Speaker 1>I want to see it eight hundred times, you can

0:21:55.720 --> 0:21:58.280
<v Speaker 1>get it on iTunes. I'm told now. Uh, they are

0:21:58.320 --> 0:22:01.240
<v Speaker 1>making the shows available on iTunes for purchase the day

0:22:01.280 --> 0:22:05.359
<v Speaker 1>after the episode airs, and episode one is free dudes

0:22:05.560 --> 0:22:08.320
<v Speaker 1>and do deads. Yeah, so every Saturday when we have

0:22:08.359 --> 0:22:11.159
<v Speaker 1>a new episode the following day on iTunes, you'll be

0:22:11.160 --> 0:22:14.560
<v Speaker 1>able to buy it. That's right. Um, So January nine

0:22:15.000 --> 0:22:17.960
<v Speaker 1>is the big premiere. I'm already wearing a dickie and

0:22:18.000 --> 0:22:21.040
<v Speaker 1>a bow tie and little cuffs right now. How do

0:22:21.080 --> 0:22:23.879
<v Speaker 1>I look? You look great? I'm getting ready slowly, but surely.

0:22:23.880 --> 0:22:27.280
<v Speaker 1>That's right. Uh, that's ten pm on Science Channel stuff.

0:22:27.280 --> 0:22:29.159
<v Speaker 1>You should know the television show. It's going to be

0:22:29.280 --> 0:22:32.800
<v Speaker 1>great January, isn't there? Right? All right now, listener mail,

0:22:33.640 --> 0:22:38.240
<v Speaker 1>I'm gonna call this uh mustache woman. Remember during one

0:22:38.280 --> 0:22:43.280
<v Speaker 1>of the November plugs, I think said something about ladies.

0:22:43.359 --> 0:22:45.480
<v Speaker 1>Of course, you don't have a mustache, but blah blah blah,

0:22:45.920 --> 0:22:47.800
<v Speaker 1>it can happen, and this is probably a pretty good

0:22:47.800 --> 0:22:52.320
<v Speaker 1>podcast to mention this. Okay, this from Kayleb guys. I

0:22:52.320 --> 0:22:53.920
<v Speaker 1>was listening to what will Happen When We reach the

0:22:54.000 --> 0:22:57.520
<v Speaker 1>Singularity and Chuck said, men, I guess women, if you

0:22:57.520 --> 0:23:00.240
<v Speaker 1>can grow a mustache, more power to you. Immediately up

0:23:00.400 --> 0:23:03.200
<v Speaker 1>the podcast. What can Email? I suffer from a condition

0:23:03.200 --> 0:23:08.040
<v Speaker 1>known as polycystic ovarian syndrome p c o S, which

0:23:08.040 --> 0:23:10.720
<v Speaker 1>is a leading cause of infertility and effects about twelve

0:23:11.040 --> 0:23:13.760
<v Speaker 1>of women. Many women don't know what it is or

0:23:14.080 --> 0:23:17.520
<v Speaker 1>that they have it, but symptoms include um, infrequent or

0:23:17.600 --> 0:23:22.400
<v Speaker 1>no menstruation cycles, acne, weight gain, diabetes and insulin UH

0:23:22.640 --> 0:23:31.320
<v Speaker 1>insulin resistance and her her sutism her like her which

0:23:31.359 --> 0:23:34.000
<v Speaker 1>is excess hair UH. It can lead to women growing

0:23:34.000 --> 0:23:38.320
<v Speaker 1>hair where no woman should on the face, excessive arm hair, legs,

0:23:38.320 --> 0:23:40.800
<v Speaker 1>and even hair on the nipples. Luckily, I am not

0:23:40.880 --> 0:23:44.120
<v Speaker 1>affected by this particular symptom, but some women report having

0:23:44.160 --> 0:23:47.400
<v Speaker 1>to shave several times a day, including sneaking razors into

0:23:47.400 --> 0:23:50.320
<v Speaker 1>work to shave their faces. UH. Needless to say, this

0:23:50.400 --> 0:23:52.639
<v Speaker 1>is a devastating reality and can have huge impacts on

0:23:52.680 --> 0:23:56.000
<v Speaker 1>a woman's confidence an emotional well being. One lady with

0:23:56.040 --> 0:23:59.560
<v Speaker 1>PCOS is participating in November to raise money for men's

0:23:59.600 --> 0:24:03.760
<v Speaker 1>health awesome and to promote PCOS awareness. That is really awesome,

0:24:03.960 --> 0:24:05.800
<v Speaker 1>very cool. So I'd love if you could read this

0:24:05.840 --> 0:24:08.600
<v Speaker 1>on the air and raise some awareness around this condition.

0:24:08.960 --> 0:24:13.080
<v Speaker 1>You can find more information through the Polycystic Association of

0:24:13.400 --> 0:24:18.520
<v Speaker 1>Australia via Twitter at p O s A A on

0:24:18.640 --> 0:24:23.200
<v Speaker 1>Australian Please don't do an impersonation? Are you going to now?

0:24:24.320 --> 0:24:27.439
<v Speaker 1>That's terrible. I would really appreciate the plug, big fan

0:24:27.520 --> 0:24:30.520
<v Speaker 1>of you guys. Uh, this is Kayla awesome, Kaylea, thank

0:24:30.520 --> 0:24:32.959
<v Speaker 1>you very much for writing in and uh, thank you

0:24:33.000 --> 0:24:37.240
<v Speaker 1>to the woman who grew mustache from November. That's pretty awesome.

0:24:37.359 --> 0:24:40.240
<v Speaker 1>Head hats off to you. Um. If you want to

0:24:40.359 --> 0:24:43.359
<v Speaker 1>let us know about something that we obviously don't know

0:24:43.440 --> 0:24:47.440
<v Speaker 1>about um because we made some weird reference to it, who,

0:24:47.600 --> 0:24:49.600
<v Speaker 1>you can tell us all about it on Twitter at

0:24:49.720 --> 0:24:52.600
<v Speaker 1>s Y s K podcast. You can join us on

0:24:52.600 --> 0:24:55.439
<v Speaker 1>Facebook dot com slash stuff you Should Know, and you

0:24:55.480 --> 0:24:58.359
<v Speaker 1>can send us a good old fashioned email to Stuff

0:24:58.520 --> 0:25:06.960
<v Speaker 1>podcast at disco every dot com for more on this

0:25:07.119 --> 0:25:17.520
<v Speaker 1>and thousands of other topics. Visit how stuff Works dot com,

0:25:10.800 --> 0:25:10.840
<v Speaker 1>m