This is non scientific opinion.
This is getting tiresome. The science which indicates a neurobiological origin of transgenderism is solid, which has been pointed out to you repeatedly, but yet, you think your engineering credentials qualify you to reject the current consensus.
In addition, you keep misreading statistics regarding “ex-homosexuals”, which has been pointed out to you repeatedly. Since you claim to have taken courses in statistics, I’m wondering if you do this on purpose?
Despite claiming to have a background in science, you keep citing a highly original, non-peer-reviewed book to prove your points.
You also keep making claims about Catholic teaching, despite people repeatedly having pointed out that your views indeed are
not Catholic teaching.
Lastly, here are a few of the studies that point toward the brain-sex hypothesis:
“There is also evidence, albeit clinical, for a role of testosterone in the sexual differentiation of the human brain, in particular in inducing male gender role behavior and heterosexual orientation.” -
link.springer.com/chapter/10.1007/978-1-4614-7441-8_1
“…We conclude that there is sufficient evidence that EDCs modify behavioral sexual dimorphism in children, presumably by interacting with the hypothalamic-pituitary-gonadal (HPG) axis.” -
ehp.niehs.nih.gov/wp-content/uploads/121/11/ehp.1306533.pdf
“Gender-dependent differentiation of the brain has been detected at every level of organization–morphological, neurochemical, and functional–and has been shown to be primarily controlled by sex differences in gonadal steroid hormone levels during perinatal development.” -
link.springer.com/article/10.1007/s00424-013-1258-4
“Gender identity (the conviction of belonging to the male or female gender), sexual orientation (hetero-, homo-, or bisexuality), pedophilia, and the risks for neuropsychiatric disorders are programmed into our brain during early development. There is no proof that postnatal social environment has any crucial effect on gender identity or sexual orientation.” -
link.springer.com/referenceworkentry/10.1007/978-1-4614-1997-6_115
“Testosterone, estrogen and dihydrotestosterone are the main steroid hormones responsible for the organization and sexual differentiation of brain structures during early development.”
journalagent.com/z4/download_fulltext.asp?pdir=jtgga&plng=tur&un=JTGGA-86836
“In human males, we show that variation in fetal testosterone (FT) predicts later local gray matter volume of specific brain regions in a direction that is congruent with sexual dimorphism observed in a large independent sample of age-matched males and females from the NIH Pediatric MRI Data Repository.” -
jneurosci.org/content/32/2/674.abstract
“Testosterone measured in infancy predicts subsequent sex-typed behavior in boys and in girls.” -
sciencedirect.com/science/article/pii/S0018506X1200044X
“The finger length ratio between the second and fourth digits in transgender men was significantly lower than in female controls in the right hand in this study. 2D : 4D showed a positive correlation with GIS score. Because 2D : 4D influences are assumed to be established in early life and to reflect testosterone exposure, our results suggest a relationship between GID-FtM and perinatal testosterone.” -
ncbi.nlm.nih.gov/pubmed/22738413
“…growing evidence shows that testosterone exposure contributes similarly to the development of other human behaviors that show sex differences, including sexual orientation, core gender identity, and some, though not all, sex-related cognitive and personality characteristics.” -
ncbi.nlm.nih.gov/pubmed/21438685
"There is strong evidence that high concentrations of androgens lead to more male-typical behavior and that this also influences gender identity. " -
degruyter.com/view/j/jpem.2010.23.issue-6/jpem.2010.095/jpem.2010.095.xml
“However, when the process of genital development and of brain sexual development does not match the same sex, females with a male brain and vice versa can arise. These transsexual people have problems with their gender identity and have the conviction of being born in the wrong body.” -
dspace.library.uu.nl/handle/1874/182733
“In this study, more than 150 individuals with confirmed or suspected prenatal diethylstilbestrol (DES) exposure reported moderate to severe feelings of gender dysphoria across the lifespan.” -
shb-info.org/sitebuildercontent/sitebuilderfiles/desexposedhbs.pdf
“Secondly, as predicted twin girls where one displayed gender dysphoria had a more masculine pattern of cerebral lateralization, than non-transgender girls. These findings support the notion of an influence of prenatal T on early brain organization in girls.” -
ncbi.nlm.nih.gov/pubmed/15177706
“It thus appears conceivable that due to local hormone dependent changes during development at least some areas of the brain may follow a different course than the genitals during the process of sexual differentiation. A partial or even complete brain-body sex reversal may eventually be the result.” -
dare.uva.nl/document/75961
“Results support the notion that the gender identity is related to the sex steroid-driven sexual differentiation of the brain, and that certain genetic variants of three of the genes critically involved in this process, may enhance the susceptibility for transsexualism.” -
gupea.ub.gu.se/handle/2077/12418
I am not the one pointing to pseudo-science here.
As good as every single study so far indicates that transgenderism is neurobiological in nature and caused by events during pregnancy.