Today, 8.5% of the world's population is 65 and over, and this statistic will reach 17% by 2050 (He et al., U.S. Census Bureau, international population reports, P95/16‐1, An ageing world: 2015, U.S., 2016). They are the people who, with increasing age, will find themselves more closely interfacing with the national health system, which in many countries shows strong imbalances between rural and urban areas. In this context, a fundamental role is played by the relatives who find themselves becoming informal caregivers to compensate for lack of services.
