A year after Robert F. Kennedy Jr. abandoned his independent presidential bid, endorsed Donald Trump and launched the Make America Healthy Again movement, a new STAT investigation finds the initiative still drawing crowds yet struggling to deliver on its sweeping public-health promises. Kennedy, confirmed as health and human services secretary in February, has turned MAHA from a campaign slogan into a governing agenda spanning the nation’s health agencies. Supporters credit the effort with elevating debates over food additives and chronic-disease prevention, but interviews with nearly two dozen insiders point to widening ideological rifts and uncertainty over how to translate rhetoric into policy. The report details internal tensions over priorities, pressure from outside critics and a leadership team grappling with the practical limits of federal authority. While branded merchandise and social-media hashtags have kept MAHA visible, observers say the movement’s long-term influence will depend on whether Kennedy can convert enthusiasm into concrete regulatory or legislative wins.