The Swiss Brain Health Foundation organised, in collaboration with the INECO Foundation and the International Alliance on Brain Health, a high-level meeting in conjunction with The Lancet Commission on Brain Health, which took place on 24 and 25 April 2026 in Buenos Aires. The event brought together leaders across neuroscience, psychiatry, public health, economics, and governance to advance coordinated and implementable strategies for brain health. It addressed the need to move beyond fragmented approaches by aligning research, clinical care, prevention, and policy, while emphasizing brain health as a key driver of human development, societal resilience, and responses to demographic change.