A new study published in The Lancet has raised urgent concerns about the global health consequences of recent cuts to U.S. foreign aid. The study, coordinated by researchers from the Barcelona Institute for Global Health (ISGlobal), together with the Institute of Collective Health of the Federal University of Bahia (ISC-UFBA), the University of California Los Angeles (UCLA), and the Manhiça Centre for Health Research (CISM), among others, estimates that 91 million deaths were prevented between 2001 and 2021 in low- and middle-income countries (LMICs) thanks to programs supported by the United States Agency for International Development (USAID), the largest funding agency for humanitarian and development aid worldwide. However, recent U.S. foreign aid cuts could reverse this progress and lead to more than 14 million additional deaths by 2030, including over 4.5 million children under five.