Gender norms shape the daily lives of every person on the planet. Since the Bill & Melinda Gates Foundation is dedicated to the principle that everyone should have the opportunity to lead a healthy and productive life, we are especially interested in understanding how these norms negatively affect health. That is why we were so excited to co-fund the work that formed the basis for this Lancet Series on gender equality, norms, and health, along with the United Arab Emirates Ministry of Foreign Affairs and International Cooperation.