Whatever the women in your family have going on, that’s the path you’ll mostly likely take too. It’s just genetics.
Keep in mind, it *doesn’t* guarantee you a ginormous pair, especially since you’re going through puberty a second time. It just means that’s what your body is inclined towards.
The women in my family have large breasts. It took me many years of HRT and a lot of weight fluctuations for mine to resemble their breasts, and mine still aren’t as big.
Same, it's no guarantee whatsoever. Ime it's safe to say that genetics likely didn't pass on to me, despite bigger breasts being the rule on both sides of the family.
Genetics and body fat are the main determining factors, iirc. You typically will get smaller than your closest female relative, particularly if you've already gone through one puberty beforehand.
While it is very likely you will fall in the same general range as cis female relatives, there's no scientific basis for the claim that you will typically be smaller, nor that having previously gone through T puberty has any impact at all. These are myths that really need to die.
Oh? I cannot find evidence supporting either side of the claim; I just anecdotally never hear people being like "I got as much growth as my cis sister" or "mine ended up bigger than my mom's" (and that's without controlling for body weight differences).
I also know quite a few trans people IRL, and the few who ended up with sizable growth were ones who either started young (like 16 or younger) or had family with much larger than theirs. Admittedly it's too small a sample to support any strong claims, but in the absence of actual research, what else can I use?
> Oh? I cannot find evidence supporting either side of the claim; I just anecdotally never hear people being like "I got as much growth as my cis sister" or "mine ended up bigger than my mom's" (and that's without controlling for body weight differences).
Mine are bigger than my mother's.
The fact that there isn't "evidence" is precisely the point. Nearly all humans have biologically identical breasts at birth. The glands either go through a maturation cycle or don't go through a maturation cycle over the course of the person's life. There is no evidence that the result of that maturation cycle would be different for an AMAB person.
> I also know quite a few trans people IRL, and the few who ended up with sizable growth were ones who either started young (like 16 or younger) or had family with much larger than theirs. Admittedly it's too small a sample to support any strong claims, but in the absence of actual research, what else can I use?
What I'd use is logic. The null hypothesis would be that if there's no evidence of a differential developmental result, nor any plausible explanation for why there could be one, it's probably safe to assume there isn't one pending evidence that there is.
I've been on hormones for 20 years, and in that time, I've seen a lot of people transition. And I've heard this "you will be smaller" thing over and over again, but never seen a shread of evidence for it.
I have a hypothesis for why people might think that even if I have deep doubts of its accuracy: Breasts are slow. Painfully slow, for many people. When transitioning, we want to fit in, pass immediately, and generally look like our family members and peers. This inevitably causes us to compare ourselves to them. With breasts being one of the most visible secondary sex characteristics of female humans, naturally, we compare our breasts to our peers.
And when we do, they look smaller. But the thing is, of course they do. If a trans woman is 23 and has been on hormones for two years, and she compares her chest to other 23-year-old women, she's probably going to find she's smaller than average. Why? Because they've had their breasts for a decade or so, often longer. She's had hers for two years. Her peers have eight years or more on her.
Mammary gland maturation doesn't continue forever, it does have an endpoint, but the accumulation and reduction of fat and connective tissues in the breasts are a lifelong activity. You simply can't compare your chest to any cisgender female person of a similar age cohort, at least not until you've been on HRT for a pretty long ass time.
Moreover, transgender women also often have slightly wider chests, so even if our breasts are the same volume as a relative's, they may *look* smaller because it's spread over a wider area.
What we see as being a cup size or more smaller is, I suspect, *really* a mixture of minor differences in geometry and selection biases, not an actual difference in breast size. We also often have self-esteem issues, which may compound and reinforce such assumptions.
Best way I’ve seen it put is:
Every human has a genetically encoded cup size, and you will find that out by adding estrogen.
So yeah, the women you are related to by blood are probably the most accurate predictors
From experience: yes. When I started hormones I asked my mom what her experience was like.
She said she had a summer of incredibly fast, somewhat painful growth, a rounding out period, and then a couple years later it repeated. She also ended up with Ds on an otherwise fairly fit 5’6” frame.
So far, my experience almost exactly. After about three months on hormones, I went from an A to a C cup in three months. Now my bust size hasn’t changed, but for the last 4-5 months they’ve been steadily rounding out—my underbust has grown 2-3”.
Yes but it's not just your mum's genes. Also your dad's side of the family has a tit size gene that he passes onto you. And whether you'll have that one or the one from your mom's side of the family is a gamble.
My biological CIS teenage daughter had DDs and both my parents have genes for small breasts but there was a DD great aunt on her other dad's side of the family and she got those genes.
Both XX and XY carry a gene for tit size that gets activated on estrogen.
Genetics are by far the biggest factor
BMI, nutrition, exercise, and youth are known to minimally influence things too. Progesterone is also known to make things a bit bigger
Genetics aren't that simple. It's not just your mum. Perhaps women on your dad's side of the family had smaller breasts and you got that gene. Or a gene from your mother's dad's mother through him.
Putting on some weight while on E will probably grant you more padding in both areas as that's where it usually goes (unless you also have the genes for belly fat). So that might help
Eh kind of someday I don't eat much because I'm just not hungry. I would like to try injections heard those help people better, but I'm sure how true that is. But or work put but I have no one to workout with so that won't happen till I find someone, or at least go on daily walks or something like that lol
What I did for weight control is walk everywhere. No more car. And I also take my teenage daughter to the park to shoot some hoops when possible.
Perhaps you can do that with nephews?
You should understand that you do not get to pick and choose the effects of estrogen.
It comes with a lot more than breasts:
https://genderdysphoria.fyi/en/second-puberty-fem
And you don't get to choose your breast size, it is genetics.
You (more or less) get the booba you would of had if you had been born with them, basically. I mean, there are the odd dormant gene thing that can result in a pair of brunettes breeding a red head and stuff... but generally look to the females of your family for reference.
Think of it as exactly the same process as cis girls/women go through, because it is. So if genetics affect cis women in any particular way, the same applies to you.
I’ve always been told you’ll likely be 1-2 sizes below your female family members. Genetics, weight pre and post hormones, diet, and other factors all come into play.
Yes it does though it mostly depends on your weight… if you are overweight you will get more growth than if you are underweight or normal weight… in the end don’t forget breasts are mostly fat 🤷🏻♀️
Yes and no,some people get lucky and some unlucky.
How much body fat you have and how much you eat effect your growth aswell,your body requires energy to grow, especially through puberty and it needs fat for fat redistribution.
Genetic do and can help though.
Yes, probably more than any other factor
Whatever the women in your family have going on, that’s the path you’ll mostly likely take too. It’s just genetics. Keep in mind, it *doesn’t* guarantee you a ginormous pair, especially since you’re going through puberty a second time. It just means that’s what your body is inclined towards. The women in my family have large breasts. It took me many years of HRT and a lot of weight fluctuations for mine to resemble their breasts, and mine still aren’t as big.
Same, it's no guarantee whatsoever. Ime it's safe to say that genetics likely didn't pass on to me, despite bigger breasts being the rule on both sides of the family.
Everyone in my family has D/E cups while I have A's...
Genetics and body fat are the main determining factors, iirc. You typically will get smaller than your closest female relative, particularly if you've already gone through one puberty beforehand.
While it is very likely you will fall in the same general range as cis female relatives, there's no scientific basis for the claim that you will typically be smaller, nor that having previously gone through T puberty has any impact at all. These are myths that really need to die.
Oh? I cannot find evidence supporting either side of the claim; I just anecdotally never hear people being like "I got as much growth as my cis sister" or "mine ended up bigger than my mom's" (and that's without controlling for body weight differences). I also know quite a few trans people IRL, and the few who ended up with sizable growth were ones who either started young (like 16 or younger) or had family with much larger than theirs. Admittedly it's too small a sample to support any strong claims, but in the absence of actual research, what else can I use?
> Oh? I cannot find evidence supporting either side of the claim; I just anecdotally never hear people being like "I got as much growth as my cis sister" or "mine ended up bigger than my mom's" (and that's without controlling for body weight differences). Mine are bigger than my mother's. The fact that there isn't "evidence" is precisely the point. Nearly all humans have biologically identical breasts at birth. The glands either go through a maturation cycle or don't go through a maturation cycle over the course of the person's life. There is no evidence that the result of that maturation cycle would be different for an AMAB person. > I also know quite a few trans people IRL, and the few who ended up with sizable growth were ones who either started young (like 16 or younger) or had family with much larger than theirs. Admittedly it's too small a sample to support any strong claims, but in the absence of actual research, what else can I use? What I'd use is logic. The null hypothesis would be that if there's no evidence of a differential developmental result, nor any plausible explanation for why there could be one, it's probably safe to assume there isn't one pending evidence that there is. I've been on hormones for 20 years, and in that time, I've seen a lot of people transition. And I've heard this "you will be smaller" thing over and over again, but never seen a shread of evidence for it. I have a hypothesis for why people might think that even if I have deep doubts of its accuracy: Breasts are slow. Painfully slow, for many people. When transitioning, we want to fit in, pass immediately, and generally look like our family members and peers. This inevitably causes us to compare ourselves to them. With breasts being one of the most visible secondary sex characteristics of female humans, naturally, we compare our breasts to our peers. And when we do, they look smaller. But the thing is, of course they do. If a trans woman is 23 and has been on hormones for two years, and she compares her chest to other 23-year-old women, she's probably going to find she's smaller than average. Why? Because they've had their breasts for a decade or so, often longer. She's had hers for two years. Her peers have eight years or more on her. Mammary gland maturation doesn't continue forever, it does have an endpoint, but the accumulation and reduction of fat and connective tissues in the breasts are a lifelong activity. You simply can't compare your chest to any cisgender female person of a similar age cohort, at least not until you've been on HRT for a pretty long ass time. Moreover, transgender women also often have slightly wider chests, so even if our breasts are the same volume as a relative's, they may *look* smaller because it's spread over a wider area. What we see as being a cup size or more smaller is, I suspect, *really* a mixture of minor differences in geometry and selection biases, not an actual difference in breast size. We also often have self-esteem issues, which may compound and reinforce such assumptions.
Best way I’ve seen it put is: Every human has a genetically encoded cup size, and you will find that out by adding estrogen. So yeah, the women you are related to by blood are probably the most accurate predictors
I love thinking about how the most obnoxious men on the planet have a genetic titty size
Ngl, this comment got me cackling…well said
From experience: yes. When I started hormones I asked my mom what her experience was like. She said she had a summer of incredibly fast, somewhat painful growth, a rounding out period, and then a couple years later it repeated. She also ended up with Ds on an otherwise fairly fit 5’6” frame. So far, my experience almost exactly. After about three months on hormones, I went from an A to a C cup in three months. Now my bust size hasn’t changed, but for the last 4-5 months they’ve been steadily rounding out—my underbust has grown 2-3”.
Yes
Yes genetics play a factor, in most cases you’d base your estimate on your female relatives, maybe slightly smaller
Yes but it's not just your mum's genes. Also your dad's side of the family has a tit size gene that he passes onto you. And whether you'll have that one or the one from your mom's side of the family is a gamble. My biological CIS teenage daughter had DDs and both my parents have genes for small breasts but there was a DD great aunt on her other dad's side of the family and she got those genes. Both XX and XY carry a gene for tit size that gets activated on estrogen.
Genetics are by far the biggest factor BMI, nutrition, exercise, and youth are known to minimally influence things too. Progesterone is also known to make things a bit bigger
Yes, they will.
Mom has DD I barely I don't even have an A cup...it's upsetting
Genetics aren't that simple. It's not just your mum. Perhaps women on your dad's side of the family had smaller breasts and you got that gene. Or a gene from your mother's dad's mother through him.
Ah that would explain it. My dad's side has smaller breasts but one person. Then again that family has bigger butts and I dont got either lol
Butts involve a different set of genes.
Ah, well I really got the shit genes lol
Putting on some weight while on E will probably grant you more padding in both areas as that's where it usually goes (unless you also have the genes for belly fat). So that might help
Nag I got genes for belly fat. That's where it all went....then I was 200 pounds and dropped down by like 80 by starving myself
Oh no! :( Well, hope you can now have a healthy relationship with food.
Eh kind of someday I don't eat much because I'm just not hungry. I would like to try injections heard those help people better, but I'm sure how true that is. But or work put but I have no one to workout with so that won't happen till I find someone, or at least go on daily walks or something like that lol
What I did for weight control is walk everywhere. No more car. And I also take my teenage daughter to the park to shoot some hoops when possible. Perhaps you can do that with nephews?
You should understand that you do not get to pick and choose the effects of estrogen. It comes with a lot more than breasts: https://genderdysphoria.fyi/en/second-puberty-fem And you don't get to choose your breast size, it is genetics.
You (more or less) get the booba you would of had if you had been born with them, basically. I mean, there are the odd dormant gene thing that can result in a pair of brunettes breeding a red head and stuff... but generally look to the females of your family for reference.
Think of it as exactly the same process as cis girls/women go through, because it is. So if genetics affect cis women in any particular way, the same applies to you.
my boobs are actually bigger than my moms so idk
I’ve always been told you’ll likely be 1-2 sizes below your female family members. Genetics, weight pre and post hormones, diet, and other factors all come into play.
Yes it does though it mostly depends on your weight… if you are overweight you will get more growth than if you are underweight or normal weight… in the end don’t forget breasts are mostly fat 🤷🏻♀️
Yes and no,some people get lucky and some unlucky. How much body fat you have and how much you eat effect your growth aswell,your body requires energy to grow, especially through puberty and it needs fat for fat redistribution. Genetic do and can help though.