Environmental and policy change to support healthy aging.

Given the growing evidence of the influence of the environment on older adult health, the need to design and implement effective environmental policy around healthy and vital aging is urgent. This article describes issues amenable to improvement through policy change, evidence supporting specific policy approaches and outcomes, and promising strategies for implementing those approaches. Key areas of focus are neighborhood design and safety, housing, transportation, and mobility. Strategies to build capacity for policy change are also addressed. Our goals are to foster greater attention to environmental change in support of healthy aging and to illuminate directions for policy change.