What causes some teen girls to have larger breasts than others?

[ventustalks]

Some of my friends have relatively bigger breasts than others. I ask them if their family has it but they say theirs are also the biggest in the family. It is strange to me

[jshm2]

It's due to diet, and more phytoestrogen laden foods available these days than in the past.

It's also why kids today are developmentally very different than the past and why schools are failing them. Those teachers work the process as was taught to them. But it's not much use when kids have much more different developments than even their teachers, teachers.

Anyway, boobs, are down to diet, not mere genetics. Even twins can have different boobs sizes. Genetics is used as an excuse and panacea, when it is a very small part of the overall picture.

[Berethor]

Good Genes and Eating Well, also Some Luck, Big Breasts are Mature and Sexy, it's Great.

https://allthetropes.org/wiki/Big_Breasts,_Big_Deal

https://www.youtube.com/embed/6YJ91FKZHI0

[jennifer_bloom]

Estrogen and prolactin can influence breast size, as well as diet, a paleo diet can make them bigger, and some types of birth control or hormonal drugs for treating medical conditions can make them bigger too.

[CrimsonAngel09]

You just grow out that way.

I was unfortunate that my body decided to give me a DD chest.

It sucks.

[brooker]

genetics play a huge role. If your mom, grandma, or aunts have larger breasts, there's a good chance you might too. It's like the family hand-me-down you didn't ask for but got anyway. But it's not just about family. Hormones are the big players here. The estrogen level in a girl's body is a major factor that dictates breast size. During puberty, estrogen levels spike, signaling to the body that it's time to start growing those curves. Some girls might experience a higher level of estrogen and thus end up with larger breasts.

Then there's the lifestyle aspect. Weight can influence breast size too. Breasts are made up of fatty tissues, so if you gain weight, some of that could go to your chest area. On the flip side, losing weight might reduce breast size. And speaking of lifestyle, exercise can also play a part, but it's mostly about toning the muscles under the breast tissue. So, don't expect a gym workout to drastically change your cup size. It'll make 'em perkier, but not necessarily bigger or smaller.

But here's the thing, let's not forget that everyone develops at their own rate. Some girls might start developing breasts as early as age 8 or 9, while others might be late bloomers. Time's got a way of evening things out, so it's all good.

Last but not least, if anyone's considering breast augmentation, just remember, it's a personal choice and there's no right or wrong here. It's your body, and you've got every right to feel comfortable in it. Just make sure to consult with a medical professional to weigh the risks and benefits.

[TheSpaceGnome]

Hormones are what cause breast growth. Specifically estrogen, progesterone, prolactin, and oxytocin. The first 2 grow the breasts themselves, the second 2 cause milk glands to produce milk. There are also some medications that have side effects that cause breast growth or lactation, probably because they effect the production of those hormones, or the production of something that inhibits or negates those hormones.

Humans tend to not have strict diets, so there isn't much common knowledge on what diets are best for max breast size, and what diets are the worst for it.

[Miristheiss]

It is genetic, just like how tall you'll be, what bone structure or density you'll have, what color hair and eyes you'll have, the chin, face structure. It is in your genetic code.

It's not like you can eat more spinach when you are little and you'll go from an A to D just like a guy destined to be 5'8" can't eat more steak and sleep 9 hours instead of 8 and then magically grow to 6'5".

It's in your genes.

[RingOfFire]

90% genetics, 10% nutrition. Obviously if you don't get the right nutrition, your body won't have the materials it needs to build to its fullest potential. But unless you are malnourished, this is probably almost 100% a factor of your genetic makeup. There isn't much you can do to change it.

[RingOfFire]

PS, you don't necessarily inherit traits like that directly from your parents. They can skip generations and then suddenly appear in a later generation. It's all about the genes you happen to inherit.

[ShesRad80]

genetics, hormonal changes and environmental factors

[HelpfulWoman]

You do get individual people equals individual features right? Plus there's birth control causing weight gain and such as side effects.

[Drewtate]

Hormones I guess.

[artgorgeous]

Usually genetics cause some women to have larger breasts. Those women who disagree with genetics, they go to plastic surgeon.

[katiesmuff]

It's Genetics which comes from your parents.

[AviatorTom]

Genetics, it's what determines most of our body parts.

[Wise4myage]

Genetics, same thing goes for guys who have big dicks.

[LazerBean]

Genetics mostly, but also lifestyle.

[exitseven]

It ids mostly genetics.

[LiamJHayden]

Genetics and diet.

[Nikki1989]

Genetics.

[boggboss]

Genetics pretty much

[Darklydarkened]

Hormones

[Agape93]

Genetics and diet

[Anonymous]

genetics or implants or both

[Staximus]

Genetics

[In_Trance]

Hormones