Robert F. Kennedy Jr. has threatened to prevent government scientists from publishing their work in leading medical journals, marking a significant shift in his approach to scientific discourse. In a recent podcast appearance, Kennedy criticized top medical journals and claimed that their own leaders, including The Lancet’s Editor-in-Chief Richard Horton, “really disgraced himself” during the Covid-19 pandemic. Medical journal controversies and leadership responses raise questions about scientific integrityKennedy referenced past statements from prominent journal editors that cast doubt on the reliability of published clinical research. He also mentioned Richard Horton’s 2015 concerns about the replicability of scientific research. Secretary Kennedy speaks on how gain-of-function research has proven to be a threat to humanity, and how “NIH research almost certainly led to the Covid pandemic”.