This editorial was written by our postdoctoral researcher Javiera Rosell, together with Rosita Kornfeld-Matte and George W. Leeson, and it was published by the Journal of Population Ageing.

In the text, the researchers question the ageing of the population and the capacity of social infrastructures to adapt to changes in age structures.

It also reflects on the transition from a predominantly young world to a predominantly old world, with definitions of old age and older people that need to be revised.