29/08/2025
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Every single human on Earth started life as female. That is not opinion, that is biology. In the earliest weeks of pregnancy every embryo follows the same template and that template is female. Only later, depending on chromosomes, hormones and timing, do bodies develop into male, female, inters*x or something in between.
The cl****is and the p***s come from the same tissue. The ovaries and the te**es come from the same tissue. Even ni***es form first. Every one of us was female once before testosterone did anything.
Here is where it gets even more interesting. S*x organs form in the first trimester. The brain develops its s*x characteristics later in the second trimester. These are two separate processes happening at different times, shaped by different hormone signals. If those signals donāt line up, you can end up with a body that goes one way and a brain that goes another. That is one of the clearest biological explanations for why transgender people exist. This is not a theory. It is science backed up by decades of research in embryology, endocrinology and neuroscience.
Brain imaging studies confirm this. Over the past twenty years researchers using MRI and PET scans have shown clear structural and functional differences in the brains of trans people compared with cis people. For example, trans women often show brain patterns that align more closely with cis women than cis men in areas linked to body perception and identity. Trans men often show the reverse. A 2015 study in The Journal of Neuroscience found that even before hormone treatment, trans peopleās brain structures reflected their gender identity more than their s*x assigned at birth. These are not psychological illusions. They are measurable biological realities.
Inters*x variations prove this even more. Chromosome patterns like XXY or XO, androgen insensitivity, mosaic genetics and differences in hormone receptors can all create bodies that do not fit neatly into āmaleā or āfemale.ā Some people are assigned a s*x at birth that is completely different from their biology. Some only find out they are inters*x years later.
Human biology is not simple. It is messy, diverse and full of natural variation. School biology lessons give a version that is easy to memorise. Real science is far more complicated.
So when someone says āyou canāt be a woman if you werenāt born one,ā they are denying their own story. They were female once. Their p***s was once a cl****is. Their te**es were once ovaries. Their ni***es were there long before testosterone touched their body.
We all began in the same place. Some of us kept transitioning after birth. Some of us did not. Neither is more natural than the other. The idea of a fixed binary truth is not only cruel, it is bad science.
So the next time someone throws ābiologyā at you like a weapon, remember this. Biology proves them wrong.