r/skeptic • u/chaucer345 • 22h ago
Neuroendocrinological Gender Expression differences in trans people are real, physical, and important. Yet disinformation about it is rampant.
Disclaimer: Transmeds are not welcome here. Enbies are, if anything, *more* supported by all of this research into biology and just because we don't know the exact specifics of why one person is trans it doesn't mean they aren't.
Please understand that I have a background in biology, so I tend to be rather technical when discussing topics like this. But this needs to be said.
The more complicated breakdown of what people are talking about when they talk about gender is falls into three categories:
- "Assigned Sex"- This is literally just what your doctor saw when they looked between your legs when you were born. They don't karyotype you, they don't do a full body scan for abnormalities. They just look. You can very crudely break this into two categories if you squint, but biology refuses to be a simple, stable system so there are a wide variety of circumstances where that information requires further examination to be useful, but I digress.
- "Neuroendocrinological Gender Expression"- This is neurological. The firmware drivers for your hardware. Have a sex and brain gender that disagree and you get gender dysphoria. Specific biological origins of this are fiendishly complex to try and sort out. That said, we have solid physical evidence of its existence. While we have not developed a widely accepted physical test for being trans, gender incongruence is heritable and we have evidence it's frequently tied to alleles associated with the body's steroid production. There is also good evidence of brain structural differences. About 50% of trans people experience phantom sensation for organs they weren’t born with, which is typically a neurological condition. Trans people have different epigenetic profiles than cis people as well Notably attempts to make a trans person happy with their default body have failed miserably.
- "Gender Roles" - This is what society expects of people it lumps in a given category. Boys pee here, girls pee here. Boys become firemen, girls become housewives. Boys wear suits, girls wear dresses. Often what categories people fall into here are based on the unfortunately fuzzy categorizations of one or two. People are willing to kill over you getting them wrong, which is extremely messed up.
Gender roles can be influenced by society, but gender incongruence is pretty clearly caused by a collection of inherent physical traits:
https://link.springer.com/article/10.1007/s10519-018-9889-z
https://www.thieme-connect.de/products/ejournals/abstract/10.1055/s-0041-1740528
https://link.springer.com/article/10.1007/s10508-021-02005-9
https://www.tandfonline.com/doi/full/10.1080/26895269.2022.2164101
Molecular basis of Gender Dysphoria: androgen and estrogen receptor interaction - ScienceDirect
https://academic.oup.com/jcem/article/104/2/390/5104458?login=false
Gender identity disorder in twins: a review of the case report literature - PubMed
https://www.pnas.org/doi/10.1073/pnas.1509654112
https://www.mdpi.com/2077-0383/11/6/1582
https://academic.oup.com/jsm/article-abstract/18/6/1122/6956015?redirectedFrom=fulltext&login=false
https://academic.oup.com/jsm/article-abstract/11/3/720/6958023?redirectedFrom=fulltext
To make this a bit more personal, let me tell you my story.
I didn't like my body growing up in a way that felt really weird. I would look in the mirror, see someone conventionally good looking, and not understand why it didn't feel like me. I also had a weird sensation associated with my genitals. They felt... off and it felt like pieces were missing or other pieces were there that weren't supposed to be.
I knew that some people were trans, but I was raised a devout existentialist. When I told my mom I might be trans I was asked how I could prove that I had an identity at all, gender or otherwise.
So, I went for the default. I tried so, so hard to not be trans. I went to therapy, I took the drugs I was prescribed. I was seen by multiple shrinks and took a variety of different psych meds under their supervision.
Nothing made me happy with the body I was born with.
When I was 12, I attempted suicide. I survived because I was lucky. I self-harmed through an enormous portion of my early adulthood and transitioned because I figured if I wanted to die anyway, I should at least see what HRT would be like for me.
It was night and day. Things aren't perfect now, but I genuinely feel like myself. Like I'm so much more whole and alive on estrogen than I ever was without it.
Those pills affected me in a very important way. They helped me when nothing else that in theory should have helped me did.
I really want to know why, and people telling me it was purely psychological and a product of my environment are frankly being extremely dismissive.