Étienne-Émile Baulieu (born 12 December 1926) is a French biochemist and endocrinologist who is best known for his research in the field of steroid hormones and their role in reproduction and aging.
Baulieu changed his name during World War II when his family fled to the area near Grenoble and he engaged in the French resistance.
Since 2004 Baulieu is a member of the French "Ethical Advisory Committee" (Comité consultatif national d'éthique) for science and health.
Upon the invitation of Seymour Lieberman Baulieu became visiting scientist at the Columbia University in 1961–1962, and during this time he met Gregory Pincus, the father of the "birth control pill".
Such agents may prove to be useful in the maintenance of brain function during age, and Baulieu suggests that use of DHEA in the elderly may ameliorate certain age-associated deficits including memory loss and depressive mood.
Baulieu investigated the actions of this agent as an anti-progesterone steroid that proved to be able to induce early abortion and became more effective in conjunction with misoprostol.