From Evidence to Action: Rethinking Climate and Health for Resilient Systems Part 1

As IHF began engaging with the climate–health nexus, one of the earliest realizations was that the challenge is not a lack of evidence—but a lack of translation. The connections between rising temperatures, air pollution, and disease burdens are well established. Yet, these insights rarely translate into timely decisions on the ground—whether by a frontline health worker, a district administrator, or a vulnerable community. This gap between knowledge and action has emerged as one of the most critical barriers in the field.

Through its work, IHF has learned that the most meaningful opportunities do not sit within climate or health systems alone, but at their intersection. Solutions that operate in silos—pure climate analytics or standalone health interventions—often fail to drive impact. What is needed instead are integrated approaches that combine climate intelligence with health system workflows, enabling better surveillance, early warning, and response.

Another consistent insight has been the importance of place. Climate risks—and their health impacts—are deeply local. Heat stress in an urban informal settlement, for instance, differs significantly from that in a rural agrarian setting. However, most available data and interventions remain too aggregated to inform such nuanced responses. IHF’s experience underscores that hyperlocal data and context-specific solutions are essential to making climate-health action effective.

Importantly, climate change rarely acts as an isolation. It tends to amplify existing vulnerabilities—worsening respiratory illnesses in polluted environments, intensifying risks for TB patients, or exacerbating maternal and child health challenges during extreme heat. This has reinforced a key learning: climate resilience must be embedded within existing health systems and programs, rather than approached as a parallel or standalone agenda.

At the same time, while the innovation landscape is growing, moving from promising pilots to scaled, system- integrated solutions remain a persistent challenge. Many innovations struggle to navigate validation, government adoption, and sustainable deployment. This “missing middle” highlights the need for catalytic actors who can bridge innovation and implementation, supporting solutions through their most critical transition phases.

IHF has also observed that while data availability is improving, its usability remains limited. Climate and health datasets are often fragmented, non-interoperable, or not designed for decision-making at the last mile. Similarly, the role of community behavior and awareness—critical determinants of health outcomes in climate contexts—remains underleveraged in current approaches.

Finally, the field itself is still evolving in how it defines its priorities. Climate and health is often framed broadly, making it difficult for funders and innovators to identify clear, investable opportunities. There is a growing need to translate broad challenges into focused, outcome-driven problem statements that can anchor investment and action.

Taken together, IHF’s journey points to a central shift needed in the field: from building awareness of climate–health linkages to enabling integrated, actionable, and scalable solutions that are rooted in local realities and embedded within health systems.