Why does it matter whether we collect data on sex? In this episode of the Sex Matters podcast, Helen Joyce talks to sociologist Professor Alice Sullivan of University College London about her forthcoming book Sex, Lies and Statistics, due out in November.
Alice explains why sex has always been an essential statistical variable, and how conflating it with “gender identity” conceals differences in health, crime and life outcomes. They discuss preference falsification: how the vilification of the commonplace understanding of sex as real and biological has led many people to conceal their true views. They look at how public and private organisations, from the Office for National Statistics to sports governing bodies, came to adopt fringe ideas that few people share, and why so many institutions have treated people who raise concerns as the problem.
Finally, Alice discusses the need for stronger free-speech protections and an end to the culture of impunity if sex-based data and evidence-based policy-making are to be restored.








