Malawian Program for Mental Health Research Training (WARMHEART) - Mental health disorders account for nearly 1/3 of years lived with disability globally and pose a growing threat to health system performance, workforce productivity, and economic stability. In the U.S., substantial unmet need persists in rural, low-income, and other low-resource communities. High costs of developing and implementing new interventions place additional demands on already burdened U.S. health systems, making the selection of effective, evidence-based, and cost-efficient interventions more important than ever. Malawi offers a policy-relevant, low-cost setting to develop, test, and scale solutions applicable to underserved U.S. populations. Many U.S. communities experience shortages of mental health personnel that parallel workforce constraints in Malawi, creating opportunities for bidirectional learning and translation of evidence-based, cost-effective approaches. The Malawian Program for Mental Health Research Training (WARMHEART) is a successful U.S.-Malawi partnership that will train the next generation of biomedical and behavioral scientists while generating rigorous, generalizable evidence to reduce mental health care gaps. This renewal builds on a successful first phase and transitions program leadership to the Kamuzu University of Health Sciences (Malawi), strengthening in-country capacity while maintaining strong collaboration with the UNC-Chapel Hill (U.S.). WARMHEART accelerates mental health research capacity through three complementary dimensions: depth, breadth, and reach. We will 1) advance NIH priorities by training early-career investigators through structured training in implementation science, rigorous research methods, and policy translation (depth). Trainees will conduct mentored research aligned with NIH standards for rigor and reproducibility, generating findings transferable to underserved U.S. populations and mental health shortage areas; 2) convene stakeholders to prioritize solution-oriented research and policy questions, promote cross-specialty collaboration, strengthen mentorship, and support journal clubs and conferences (breadth); and 3) extend researcher impact through leadership and policy translation training, collaborations with policymakers, and a policy translation meeting (reach). Research projects will prioritize scalable, cost-effective approaches to close the mental health treatment gap, including task-sharing, integrated care, and community-based interventions increasingly relevant to low-resource US regions. Malawi's health system provides a unique setting to develop and evaluate mental health care models under severe workforce constraints. Trainees will conduct research across a spectrum of disorders (e.g., suicide prevention, substance use) at a substantially lower cost than possible in the U.S. As a result, the U.S. benefits from the wealth of data generated, enabling cost comparisons across interventions to support implementing programs with the greatest potential for impact at the lowest cost. Lessons from task-sharing, community-based care, and implementation science can be translated to U.S. settings to extend the reach of scarce mental health professionals, improve access to care, and reduce the burden of mental health disorders.