Diana Fleischman
Evolutionary psychologist and writer
Diana Fleischman brings evolutionary psychology to questions that gender medicine has long refused to ask. A secular, data-driven thinker, she argues that disgust responses carry genuine moral information and that autogynephilia is a real, measurable phenomenon — offering European clinicians and policymakers a non-ideological framework for reassessing the evidence base for gender-affirming care.
Diana Fleischman is an evolutionary psychologist whose research spans disgust, human sexuality, and the behavioural consequences of our evolved psychology. She has held academic positions in the United Kingdom and the United States and is known for subjecting topics that institutional science treats as too sensitive to investigate to rigorous, data-driven scrutiny.
In her Beyond Gender episode Disgust, Dating, and Autogynephilia: An Evolutionary Psychologist's Taboo Takes (June 2025), Fleischman joins hosts Stella O'Malley, Mia Hughes and Dr Bret Alderman to argue that disgust responses are not mere social prejudice but carry genuine moral and adaptive information — a framing with direct implications for how European societies have dismissed objections to gender-affirmative protocols as simple bigotry. She examines autogynephilia — erotic interest in oneself as a woman — as a well-documented and clinically relevant phenomenon, and makes the case that suppressing this science carries real human costs.
For continental European audiences, Fleischman's secular, evolutionary framework offers something rare: a non-religious, non-partisan critique of gender medicine grounded in peer-reviewed research. As Sweden, Finland, the Netherlands, France and Germany reassess their clinical protocols in light of the Cass Review and equivalent national investigations, her work provides intellectual scaffolding for clinicians, academics and policymakers who need to ask hard questions without ideological cover.
Fleischman writes and speaks widely on evolutionary psychology, sex differences, and the political pressures that distort scientific inquiry. Her willingness to engage publicly with taboo data — autogynephilia, sex-based disgust, the role of sexuality in gender identity — makes her a distinctive voice for European professionals navigating the aftermath of evidence-free gender medicine.
