Jean-David Zeitoun is an MD, PhD (clinical epidemiology), also graduated from Sciences Po Paris, and an entrepreneur. He is co-founder of Inato, an technological company enhancing clinical trials. He frequently writes articles for reference media, like Le Monde or Les Echos. He is the author of "La Grande Extension, histoire de la santé humaine", issued in 2021 (éditions Denoël, translated in 5 languages) and "Le Suicide de l'espèce" (Denoël, 2023).