Climate change is resulting in poorer health outcomes, increasing mortality and is a driver of health inequities. However, health is well placed to be a significant part of the solution; the positive health impacts from stronger climate change action can motivate stronger global ambition; health systems which are resilient to climate change can help protect their populations from the negative impacts (in the short and longer terms); and sustainable low carbon health systems can make a substantial contribution to reducing national and global emissions. This fact sheet on climate change and health is part of the Climate Fast Facts series of the United Nations Climate Action team.