New Delhi, July 12 -- Housing unaffordability will remain a defining economic and health challenge through 2040, with the World Economic Forum and Marsh warning that without intergenerational solutions, financial stress, poor health outcomes and wealth erosion will compound across both young and older adults.

The report argued that new models for lifelong living are emerging to address the housing challenges affecting younger and older adults, and that intergenerational collaboration will be critical to preserve the stability of financial and social systems. It points to projects in Spain, the UK and Hong Kong as examples of how quality, community and affordability can be put at the core of housing policy.

The scale of the problem is gl...