A half-jokey, half-kinky term I came up with for the tangible—and as far as researchers have been able to tell permanent—"remodeling" of the human brain when your body has been pregnant. There is such a consistently patterned reduction in gray matter in people who've been pregnant that even six years later neuroimaging can tell if someone has been pregnant or not with 91.67% accuracy. This remodeling has also been associated with maternal attachment towards their child, suggesting the changes are in fact geared towards what we'd consider maternal instinct.

As it relates to kink and to me: Inducing lactation is done by simulating pregnancy/post-birth, so that your body believes you have a baby to care for and feed. There are certain ways the brain is changed by this that are self-evident. For example, the body lactates by responding to lactation triggers with an oxytocin release, such as nipple stimulation or babies crying; a person who's never been pregnant (or more accurately, never lactated) does not neurobiologically respond to these triggers. There are other ways the brain is changed by this that are only anecdotally shown, but extremely common. For example, people who induce lactation report a massive increase in maternal urges and desires, and especially note that when they're nursing or inducing that they're beset with "baby rabies" (a colloquial term coined in the adult breastfeeding community for the sudden overwhelming desire to have and care for a baby).

There hasn't been formal research into this, but this seems to suggest inducing lactation causes the same brain remodeling.

I have personally experienced the changes that come with inducing lactation, and I only learned any of these were things after I'd been experiencing them for a while, so it's no placebo effect. The ones that only persist while you're regularly pumping, like
- The wild baby rabies (holy hell, I never used to want kids, but when I'm pumping it's all I can think about).
- The kind of de-personalization of my body (the best summary I can give is it feels weirdly not mine, like it exists for the care of the baby that my brain is sure exists).

And the ones that persist even after you've stopped pumping, like
- My breasts are totally rewired for stimulation (way more sensitive, and having them sucked just gives me this tingly, relaxing full-body warmth that spreads outward from my chest, similar to when I'm pumping).
- I see my body a bit differently now (my breast dysphoria is actually kind of reduced, they feel more like a valid and important part of me, I actually have some pride in them beyond fetish value).
- Those maternal urges are still strong (not quite baby rabies-level anymore, but man I have such strong maternal urges and yearnings; my girlfriend has disgustedly referred to me as baby-pilled).

So since I see the kink potential in everything, I've described it as momification. I've been feminized, now I've been momified.

Anyway, I've just now learned that the official term for this is 'matrescence' because the changes are likened to 'adolescence'. To quote the Cambridge Dictionary, "Matrescence, the developmental phase of new motherhood, is like adolescence — a transition when hormones surge, bodies change, and identity and relationships shift." But I dunno, I think it's hotter to say I've been force momified than to say I've had matrescence.