This blog is based on a talk that Dr Daniela Alaattinoğlu and I delivered recently at the University of Oxford. As we delivered the talk together, we have also authored this text together. As its title suggests, the main finding of the talk was that the medical field exercises immense control over the legal gender recognition of trans persons. Even when the law is based only on self-identification, and no role has been carved out for medical professionals, they seem to exercise a great influence in the desire and ability of a trans person to get legal gender recognition. Let us look closer at the Nordic countries and India.