Until recently, most laypeople were unfamiliar with the medical term “differences in sex development” (DSD). Only now, after a gender furore engulfed women’s boxing at the Olympics, has DSD come under the spotlight. Algerian boxer Imane Khelif, 25, and 28-year-old Taiwanese boxer Lin Yu-ting were disqualified from the 2023 world championships run by the International Boxing Association after failing to meet “eligibility criteria”.

However, both competed in the Tokyo Olympics three years ago and were cleared to fight in Paris. The row erupted after Khelif won her bout against Italy’s Angela Carini in Paris in just 46 seconds with two strong punches to the Italian’s nose. What is DSD?.