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Speaker 1: Brought to you by the reinvented two thousand twelve camera.

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Speaker 1: It's ready. Are you welcome to stuff mom never told you?

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Speaker 1: From how Stuff Works dot Com. Hello, and welcome to

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Speaker 1: the podcast. I'm Kristen and I'm Caroline. Caroline. I learn

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Speaker 1: a new word today while prepping for this podcast. It's letharky.

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Speaker 1: Oh yeah. Is that like lazy menarchy? Really slow period?

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Speaker 1: Slow first period? Uh No, although you are right to

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Speaker 1: associate it with monarchy, which is the term for the

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Speaker 1: first menstrual period, and letharkey is the term for the

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Speaker 1: initial breast development. Now, when who could drop letharchy into

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Speaker 1: casual conversation? I don't know, but I'm still glad to

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Speaker 1: have a new word up in monoggan. And the reason

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Speaker 1: why letharky came up in the research today was because

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Speaker 1: we're talking about asymmetrical boobs. It's normal. It's totally normal.

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Speaker 1: Let's go ahead and get that out of the way.

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Speaker 1: For any person with boobs who is listening unless you

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Speaker 1: paid for him, in which case, if they are are asymmetrical,

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Speaker 1: I don't know, you might want your money back. But

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Speaker 1: asymmetrical boobs are totally normal breasts. Boobs breasts exactly. Now,

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Speaker 1: there are certain circumstances where one might be radically different

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Speaker 1: than the other, in which case that could be completely different.

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Speaker 1: But if we're talking about just average, normal, run of

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Speaker 1: the mill breast development, they're usually different sizes, and it

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Speaker 1: might be it might be obvious, it might be just

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Speaker 1: like kind of like one might be a little bit

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Speaker 1: smaller than you. Might not notice that much, but it's

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Speaker 1: don't worry, you're your normal. Yeah, And it has to

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Speaker 1: do with the fact that breasts are a secondary sex

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Speaker 1: trait or a physical characteristic that makes its grand debut

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Speaker 1: during puberty. So you know, guys all of a sudden

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Speaker 1: sprout all this hair, the pubic hair, chest hair, facial hair,

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Speaker 1: their testicles and large, their voice gets deeper. Girls. Meanwhile,

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Speaker 1: we get a monarchy and letharchy to two twins, boobs

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Speaker 1: in a period, and other things of course, such as

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Speaker 1: pubic hair. But with this sudden influx of hormones, specifically estrogen,

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Speaker 1: when we're talking about breast development, things can get a

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Speaker 1: little uneven when it comes to developing these secondary sex traits. Yeah,

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Speaker 1: and a lot of this does have to do with

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Speaker 1: hormone levels. We have menstruation and and this is not

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Speaker 1: just changing like you know, one breast being lightly different.

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Speaker 1: This is kind of overall breath changes in general. During menstruation,

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Speaker 1: they can get fuller and more tender. I'm sure that's

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Speaker 1: very common. I've experienced that. You know, when your boobs

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Speaker 1: just hurt, when they're huge out of nowhere, that's okay,

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Speaker 1: But the boobs hurting thing, it's not as good if

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Speaker 1: you're small busted. Sometimes he'll take it. Sometimes that's exciting,

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Speaker 1: I think for both blushing for a week. Um. Then

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Speaker 1: there's during pregnancy and nursing. Obviously they get significantly larger. Menopause,

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Speaker 1: they may even become lumpy, which is something I can

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Speaker 1: look forward to, I guess. And if you're taking contraceptives

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Speaker 1: and or gaining and losing weight, that also causes a

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Speaker 1: lot of changes. But it's really during that whole puberty

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Speaker 1: thing when your breast begin to develop and one might

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Speaker 1: just you know, like pop out sooner than the other,

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Speaker 1: which is unfortunate. But I'm sorry, I'm sorry, but it happens.

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Speaker 1: And the simplest explanation for why it happens is that

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Speaker 1: the amount of estrogen that the ovary secrete and then

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Speaker 1: are directed to Uh, that breast tissue and specifically to

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Speaker 1: the milk ducks inside of our breast. The estrogen isn't

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Speaker 1: delivered evenly. It's not like the ovaries deliver like one

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Speaker 1: shot of estrogen to the left and one shot to

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Speaker 1: the right. Uh. Sometimes one breast gets a little bit

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Speaker 1: more than the other, and so you have some uneven growth.

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Speaker 1: And one thing I also didn't know about breast development.

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Speaker 1: I learned so many things about my boobs today that

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Speaker 1: I'm going to try to drop into casual conversation. So

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Speaker 1: that's gonna be awkward this weekend. Um. Technically, doctors don't

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Speaker 1: consider breast fully mature until after childbirth and lactation, So

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Speaker 1: basically they've done everything they could possibly do in terms

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Speaker 1: of you know, becoming gorged with milk and the milk

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Speaker 1: exiting with lactation, and then it's the swelling going back

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Speaker 1: down after you wean a baby, and then it's time

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Speaker 1: for really support of bras. So I wonder if you,

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Speaker 1: in a doctor's eyes, for instance, if you just never

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Speaker 1: have a kid, do you then have never bobs are

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Speaker 1: just immature. I grow up and get a job. You

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Speaker 1: have really sarcastic dudes A side glances. Well, yeah, speaking

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Speaker 1: of nursing, UM, it's also common for maybe one breast,

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Speaker 1: you know, if it's the larger breast, for instance, to

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Speaker 1: also produce more milk. Um. As web and D and

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Speaker 1: pregnancy dot Org point out, each breast is independent. They're

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Speaker 1: they're neighboring countries, but they are independent, so breastfeeding might

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Speaker 1: not even have the same effect on each side. So

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Speaker 1: what happens You get breast engorgement, which is caused by

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Speaker 1: congested blood vessels while you're nursing. But once that resolves,

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Speaker 1: once your your breast, the swelling reduces in your breast.

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Speaker 1: One might be slightly misshapen, unfortunately, I'm sorry. Again, I'm sorry. Um,

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Speaker 1: one may stay larger or droop or flatten more. And

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Speaker 1: you know, if one ends up producing more milk than

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Speaker 1: the other, than you will have one bigger breast than

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Speaker 1: the other. But again, hey, normal normal boobs not not

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Speaker 1: necessarily the same size. But there are, as you mentioned earlier,

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Speaker 1: some conditions in which there is it is more of

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Speaker 1: an abnormality. UM. For instance, there's something called Poland's syndrome,

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Speaker 1: which is a congenital defect, meaning you're you're born with

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Speaker 1: it and it's marked by the absence of the pectoralis

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Speaker 1: which is our big chest muscle on one side of

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Speaker 1: the body, and webbing of the fingers on the hand

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Speaker 1: of the same size. UM. And it was named fun

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Speaker 1: fact for the nineteenth century British surgeon Alfred Poland. Has

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Speaker 1: nothing to do with the country, No, nothing to do. Um.

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Speaker 1: There's also also a juvenile hypertrophy, which is one breast

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Speaker 1: growing significantly larger than the other. And they point out that, uh,

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Speaker 1: there are some things that work and some things that don't.

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Speaker 1: If you have uneven breast size. Things that don't work exercises,

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Speaker 1: supplements or diets. Yeah, and uh in the case of

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Speaker 1: and we're talking about something that does work in order

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Speaker 1: to to fix this. I think we're speaking specifically towards

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Speaker 1: something like juvenile hypertrophy, because we're not talking about just

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Speaker 1: some run of the mill asymmetry. One's kind of you know,

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Speaker 1: a be almost in one's a fuller b or whatever

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Speaker 1: your letter is. Um. This is where there's significant difference

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Speaker 1: in size. There's actually a term for that. We're there

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Speaker 1: it is and there's actually a specific term. I'm really

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Speaker 1: into specific boob terms today. UM. But when one breast

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Speaker 1: is much larger than the other because of that hypertrophy.

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Speaker 1: It's called gigantomastia. Hmm, that sounds unfortunate. Yeah, So in

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Speaker 1: that kind of case you might need something like a

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Speaker 1: plastic surge re um, a special insert in a bra

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Speaker 1: and um. For for some women who have this, there

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Speaker 1: is a feeling of having having a deformity. Yeah, that's uh.

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Speaker 1: Lori Cassus doctor Dr Cassas over on web in d

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Speaker 1: She is an Associate professor of surgery at Northwestern University's

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Speaker 1: Fineberg School of Medicine in Chicago, UM. She says, Yeah,

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Speaker 1: people really feel like they don't have a normal body part,

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Speaker 1: and this whole thing becomes a body image issue, not

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Speaker 1: necessarily just a self esteem issue. People want to look normal,

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Speaker 1: They want to look good in clothes, which I mean,

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Speaker 1: of course, and so if you feel like something on

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Speaker 1: you is radically different than how it's supposed to be,

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Speaker 1: then then you're very maybe insecure. Yeah, and that can

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Speaker 1: absolutely that psychological aspect can absolutely extend to cases um

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Speaker 1: of not dealing specifically with juvenile hypertrophy, but just um

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Speaker 1: breast asymmetry, especially when your breasts are developing. If you're

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Speaker 1: younger breast to because them so sexualized and we have

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Speaker 1: um these I think idealized images now of what breasts

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Speaker 1: should look like, these two perfect, perky things. And if

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Speaker 1: they don't look perfect or like the way we think

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Speaker 1: they should, then maybe we think that there's something wrong

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Speaker 1: with us, and we might think that we will be

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Speaker 1: negatively judged if we become intimate with someone for for

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Speaker 1: not being completely symmetrical. Right, And there's also depression was

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Speaker 1: also cited in a study in the Israel Medical Association Journal.

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Speaker 1: They looked at the causes and characteristics of breast asymmetry

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Speaker 1: and adolescents with normal indecrine profiles and sexual developments. So

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Speaker 1: they're trying to find out, okay, what causes these breast

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Speaker 1: size issues and young girls. They looked at eleven patients.

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Speaker 1: It was a small study, but they found that severe

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Speaker 1: breast asymmetry may be due to congenital factors, diseases involving

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Speaker 1: the breast tissue, or to the effects of medical treatment,

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Speaker 1: and it may have severe ad verse psychological and social implications.

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Speaker 1: And so they say that depression is often an accompanying

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Speaker 1: symptom for young girls who have severe breast a symmetry right,

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Speaker 1: But a lot of times um doctors will reassure younger

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Speaker 1: girls that any kind of a symmetry will tend to

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Speaker 1: even out by the age of twenty. But it's still

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Speaker 1: normal to not have the exact same left and right breast. Yeah,

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Speaker 1: it's actually so normal that Fruit of Balloom and Amazon

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Speaker 1: teamed up for the Pick your Perfect Pair bra um.

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Speaker 1: You can pick different cup sizes for each side, so

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Speaker 1: that's neat. Yeah, that's a great idea. And if they

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Speaker 1: come in cute there, like all polka dots and multicolors

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Speaker 1: and stuff, so you could have like a polka dotted

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Speaker 1: boob and then a stripe boob. Whatever you're feeling like

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Speaker 1: that day, whatever your bee feels like, and whatever you're

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Speaker 1: almost be feels like mix and match. But there is

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Speaker 1: one more alarming connection with a symmetry and rest that

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Speaker 1: has come up, starting really in March of two thousand

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Speaker 1: and six, with a study that was published in the

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Speaker 1: journal Breast Cancer Research. And it's an association between breast

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Speaker 1: asymmetry and developing breast cancer. But before we go any further,

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Speaker 1: don't worry. This doesn't mean if you have uneven breasts

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Speaker 1: you are necessarily bound to develop breast cancer, but some

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Speaker 1: studies have uncovered a link. Yeah, the researchers went into

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Speaker 1: the study thinking that a larger difference in breast size

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Speaker 1: could be an independent risk factor for developing breast cancer,

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Speaker 1: because they found that women who later developed breast cancer

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Speaker 1: had more a symmetry than those who didn't develop it.

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Speaker 1: But at the end of it all, you know, kind

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Speaker 1: of lowering the alarm. Asymmetry is just one of many

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Speaker 1: traits that influenced breast cancer risk because there's all of

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Speaker 1: these risks you know, genetic, environmental, whatever, whatever, that this

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Speaker 1: is just one of the many possibilities. Yeah, I mean

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Speaker 1: you have things like obviously a family history breast cancer,

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Speaker 1: a lower age at monarchy, later menopause later, first pregnancies UM.

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Speaker 1: And the reason why these University of Liverpool researchers were

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Speaker 1: looking at breast symmetry to begin with this was they

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Speaker 1: were looking at it among two two women in one

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Speaker 1: group and then mammograms from two hundred fifty two women

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Speaker 1: in a control group. And they were looking at breast

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Speaker 1: size because of UM, the influence of estrogen on breast

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Speaker 1: cancer development. So they are concerned that because UM asymmetry

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Speaker 1: might indicate sort of a lower tolerance for disruptive hormones

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Speaker 1: like that rush of estrogen that will hit at puberty

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Speaker 1: and stimulate breast development. They think that perhaps there might

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Speaker 1: be some kind of connection there, but again, it's one

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Speaker 1: factor among many when it comes to developing breast cancer, right,

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Speaker 1: And there was a different study US genetics company twenty

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Speaker 1: three in me examine the link, which is adorable. Twenty

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Speaker 1: three in me. It just sounds like it's like a

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Speaker 1: sitcom from the eighties or something. But anyway, and your

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Speaker 1: friendly geno. But yeah, so this genetics company examined the

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Speaker 1: link between breast eye and cancer. And Britain's National Health

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Speaker 1: Service took a look at this study and basically said

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Speaker 1: that it oversimplified all the different factors because breath cancer

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Speaker 1: is such a complex condition. Yeah, because you'll see there

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Speaker 1: was a headline in the Daily Mail reporting on this

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Speaker 1: study that said, I don't and now I'm paraphrasing this headline,

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Speaker 1: but it was something along the lines of bigger bra siye,

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Speaker 1: bigger risk of breast cancer. No sensationalism there, yeah, to

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Speaker 1: which every so many women probably clutched their boobs in horror. Um.

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Speaker 1: But yeah, when it comes to these these explorations of

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Speaker 1: breast cancer, breast size, and symmetry versus asymmetry. Um, it

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Speaker 1: is important to look beyond just the headlines that you

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Speaker 1: might see. But to close things out, since we're talking

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Speaker 1: about breast asymmetry, why why do we care so much

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Speaker 1: about a little bit of unevenness? Like why why worry

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Speaker 1: about it in the first place. Well, we're probably worried

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Speaker 1: what we look like nakedly or in the mirror. That

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Speaker 1: could be, it could be. It would be nice though

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Speaker 1: if that were not the case, if it's never worried

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Speaker 1: what we looked like naked. Uh, Well, I um, I

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Speaker 1: think it has something to do with our innate attraction

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Speaker 1: to symmetrical things. There's like within uh, they like our biology.

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Speaker 1: We are drawn to symmetry, are we not. Yeah, it

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Speaker 1: doesn't suppose it's supposed to mean that you're healthier or

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Speaker 1: that you're Elizabeth Harley. I don't know, she's very symmetrical.

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Speaker 1: It signals being related to Elizabeth early yes, and um yeah,

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Speaker 1: and your your reproductive fitness. So you see all these

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Speaker 1: days that come up come out saying that more symmetrical

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Speaker 1: faces are redd as, more are attractive than non symmetrical faces,

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Speaker 1: although that doesn't mean. There was a blog that I

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Speaker 1: was reading over at Science two point oh and it

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Speaker 1: was it's called rogue neuron, and they were pointing out

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Speaker 1: that just because something might be more attractive doesn't necessarily

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Speaker 1: necessarily make it more sexually attractive. Sometimes it's more of

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Speaker 1: the difference, a little bit of a you know, I

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Speaker 1: don't want to say a flaw, um a unique something

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Speaker 1: or other distinguishing that related to a boobs. Yes, but

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Speaker 1: well I'm talking more about faces. Hopefully someone's not staring

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Speaker 1: so closely at my boobs that they can see the

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Speaker 1: geni of my left and Christian I'm always wearing sheer tops.

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Speaker 1: So speaking of symmetry and attractiveness, there are to studies.

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Speaker 1: This is a while ago, but it's just funny that

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Speaker 1: apparently the year of symmetry. This U T. Austin study

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Speaker 1: found that uh, people were more attracted to figures with

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Speaker 1: low waste hip ratios who were also uh, very symmetrical

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Speaker 1: in the boob region. Man, come on, you t us

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Speaker 1: and we've just we've just spent how long, like fifteen

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Speaker 1: minutes or something calming people's nerves about asymmetrical breast I

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Speaker 1: don't know, maybe things have changed since grunge went out, perhaps,

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Speaker 1: but yeah, so men of the grunge era really actually

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Speaker 1: used both waste to hip ratios and breath asymmetry and

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Speaker 1: judging attractiveness and being willing to develop romantic relationships. Now

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Speaker 1: I did not you found this study. And I have

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Speaker 1: a feeling though that because I've seen other studies that

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Speaker 1: on facial symmetry versus asymmetry, and they show participants all

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Speaker 1: these computer generated images of something like a really symmetrical

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Speaker 1: face and then a symmetrical face which would not exist

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Speaker 1: in nature, like like very it's it shows a hunchback

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Speaker 1: of netter Day. Yeah, it kind of feels sometimes like

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Speaker 1: the researchers are sort of like breathing down it just

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Speaker 1: beIN next being like because you know, if you have

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Speaker 1: like one I don't know one bood but three feet

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Speaker 1: out from the other one, I am taking. Yeah, I'm

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Speaker 1: gonna go ahead and take a stand on this study

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Speaker 1: and say, you know what, maybe the symmetry or asymmetry

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Speaker 1: was exaggerated images absolutely, But so this shows that men

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Speaker 1: of this very specific study Christen Men in Austin, Texas

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Speaker 1: of the grunge era found women who were symmetrical more

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Speaker 1: attractive than women who were ridiculously asymmetrical. There we go, okay,

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Speaker 1: Goo'd buy those results. But when it comes to day

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Speaker 1: to day and our breast, when we do when we

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Speaker 1: are naked, you know, because this does come down a

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Speaker 1: lot too to being naked. There were a lot of

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Speaker 1: um advice letters that I ran across while we were

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Speaker 1: looking for information on this, from younger girls in particular,

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Speaker 1: who were concerned about what what a part nor might

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Speaker 1: think about some asymmetry, to which I say to you

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Speaker 1: and all, it is a okay and it is normal.

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Speaker 1: And if one breast being slightly smaller or bigger, however,

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Speaker 1: why you look at a glass half all or glass

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Speaker 1: half empty? Uh is a deal breaker? Then kick him

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Speaker 1: to the curb anyway, Yeah, and then go buy a

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Speaker 1: braw and Amazon from True to the Limb, or just

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Speaker 1: don't wear one at all. I don't know, I don't care. Yeah,

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Speaker 1: we don't. We don't want to tell you what to

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Speaker 1: do with your bras. So that's why breasts are so

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Speaker 1: often uneven. And if you have any stories you would

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Speaker 1: like to share about about asymmetry and breast or any advice,

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Speaker 1: if we have younger listeners out there. If you're still

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Speaker 1: concerned about this issue, we'd be more than happy to

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Speaker 1: hear from you. You You can send us a letter. Mom

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Speaker 1: Stuff at Discovery dot com is our email address. And

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Speaker 1: in the meantime, I've got an email here from a

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Speaker 1: summer short, one of my favorite summer shorts so we did,

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Speaker 1: in fact on nude beaches. And this is from Alicia

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Speaker 1: and she she writes, I dated a guy whose family

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Speaker 1: owned and lived at a nudist park at a lake

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Speaker 1: in New Hampshire. We often referred to him as the

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Speaker 1: Naked Republican because his family was very conservative, very blue collar,

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Speaker 1: and they had a nudist park, complete with church on

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Speaker 1: Sunday morning. It seems like it shouldn't be possible, but

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Speaker 1: once there, it's easier to see that nothing is sexual.

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Speaker 1: Their family has gone very far to make sure that

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Speaker 1: it is a family friendly park, despite the fact that

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Speaker 1: nobody wears clothes. There is a line between sexy and naked,

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Speaker 1: and I have to say they did it. The park

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Speaker 1: was started when my ex's grandfather came home from World

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Speaker 1: War Two. Was some kind of infection that the doctor

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Speaker 1: said would be best if not covered, so we bought

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Speaker 1: a huge tract of land in New Hampshire that had

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Speaker 1: a lake and there the park started. There are boats,

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Speaker 1: tennis courts, volleyball courts and many cabins to stay in.

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Speaker 1: You can't wear a bathing suit because that is sexy.

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Speaker 1: You can wear cover ups or as it still baffles me,

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Speaker 1: you can wear a jacket and nothing else. Disrobing in

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Speaker 1: public is a no no, and you do not ever

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Speaker 1: forget your towel. There's no alcohol on the premises and

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Speaker 1: it is a place where single people are selectively allowed.

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Speaker 1: This isn't a meat market. Oh man. Alicia, thanks so

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Speaker 1: much for sending in that story. And here's one from

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Speaker 1: brit on our Celiac Disease episode. She says, Celiac runs

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Speaker 1: in my family and it's been an eye opening experience.

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Speaker 1: Sometimes it gets annoying to hear people think you're just

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Speaker 1: following some fad diet when you're really advocating for your health.

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Speaker 1: I was surprised that you left out some of the

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Speaker 1: more random items and food. They contain gluten, and this

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Speaker 1: is an amazing list. I just want to tell you, Okay,

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Speaker 1: lip gloss, envelope, glue, processed ham, anything dusted with flowers

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Speaker 1: such as latex gloves, wine corks, even some pills, and finally,

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Speaker 1: art supplies like paint and clay. She says, well, not

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Speaker 1: important to people just going on a diet. It is

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Speaker 1: important for people with celia to investigate the ingredients and

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Speaker 1: keep talking to their doctors and apparently avoiding processed hams.

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Speaker 1: Stay away from the canned hams. Thank you, Britt. When

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Speaker 1: the holidays roll around soon, do not give canned hands

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Speaker 1: to your gluten free friends or or me. I'll just

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Speaker 1: go ahead and put that out there, or envelopes, Okay,

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Speaker 1: I guess they could use tape anyway, So send us

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Speaker 1: an email. Mom Stuff at Discovery dot com of course

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00:21:39,880 --> 00:21:41,679
Speaker 1: is where you can send them, and you can always

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00:21:41,680 --> 00:21:44,720
Speaker 1: find us on Facebook, like us over there if you would,

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00:21:44,720 --> 00:21:48,200
Speaker 1: and follow us on Twitter at Mom's Stuff podcast, and

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00:21:48,280 --> 00:21:52,360
Speaker 1: you can even join us on Tumbler Stuff Mom never

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00:21:52,440 --> 00:21:56,080
Speaker 1: told you dot tumbler dot com. And if you would

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00:21:56,080 --> 00:21:58,160
Speaker 1: like to get a little smarter this week, why don't

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00:21:58,160 --> 00:22:04,399
Speaker 1: you head to our website, It's house stuff works dot com.

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Speaker 1: For more on this and thousands of other topics, visit

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Speaker 1: how stuff works dot com. Brought to you by the

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Speaker 1: reinvented two thousand twelve camera, it's ready. Are you