Disgust, Dating, and Autogynephilia: An Evolutionary Psychologist's Taboo Takes - Diana Fleischman

5 June 2025

With Diana Fleischman

Global

Diana Fleischman brings evolutionary psychology to bear on the gender debate — examining why disgust responses carry moral information, what autogynephilia reveals about male gender identity, and why suppressing inconvenient science carries real costs. For European clinicians, academics and policymakers still reckoning with the aftermath of evidence-free gender medicine, her secular, data-driven framework offers something that ideology has long blocked: a grounded account of sex differences that does not require an apology.

Diana Fleischman is not a comfortable guest. An evolutionary psychologist at the University of New Mexico, she has built a research career on questions that academic culture would prefer to leave unanswered. Her work on sex differences in disgust sensitivity — now cited over two thousand times — has documented that women evolved a more finely calibrated disgust response as a disease-avoidance mechanism. That finding, and what it implies for how people instinctively react to certain aspects of the current gender landscape, is at the centre of this conversation with Stella O'Malley, Mia Hughes and Dr Bret Alderman. The episode opens with a question that cuts straight to the point: why do many women feel visceral discomfort when they see a pregnant person who identifies as a man? Fleischman's answer is neither moralistic nor dismissive. She argues that disgust is not simply prejudice in biological costume — it is information. It encodes accumulated evolutionary learning about things that carry risk, including risks to offspring. European listeners schooled in a culture that treats any instinctive reaction to gender ideology as evidence of bigotry will find this framing genuinely disruptive. The conversation moves into autogynephilia — the theory that a subset of male-bodied people experience sexual arousal in response to the idea of themselves as women. This concept has been almost entirely expelled from clinical discourse in several European countries, including the Netherlands and Sweden, at precisely the moment those countries are revisiting the evidence base for gender medicine more broadly. Fleischman treats it as a legitimate subject for evolutionary analysis rather than a slur, and her framing raises a direct question for European clinicians: what is lost when a diagnostic concept is removed from the toolkit not because it lacks evidence, but because it became politically inconvenient? Free speech and the mechanisms of social punishment run as a thread through the entire episode. Fleischman describes how outrage and virtue signalling function as dominance strategies within intellectual communities, suppressing findings that challenge prevailing orthodoxies. This dynamic has been particularly visible in European universities and research institutions, where pressure to align with gender-affirmative frameworks has shaped hiring, publication and funding decisions in ways that are only now beginning to be scrutinised. For European listeners, the episode's deeper value lies in its demonstration that the science underpinning gender-critical concerns does not depend on religion, conservatism or any particular cultural tradition. Evolutionary psychology offers a secular, evidence-grounded account of why sex differences are real, why some instinctive reactions carry moral weight, and why suppressing inconvenient data always extracts a cost. At a moment when Sweden, Finland and several other countries are formally recalibrating their approach to gender medicine, conversations like this one help map the intellectual terrain that policy will eventually have to cross.

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