There is increasing recognition of the world growing population of senior citizens, due to the rise in life expectancy and decreased fertility rates. Senior citizens are the most expensive population group for the healthcare system due to the avoidable ageing impact on health degradation. It is therefore necessary to move from the focus on curing to prevention. How can design play an important role to support healthcare prevention for the older adults? Do we need to alter our design tools and methods to be suitable for the design contexts? In this section, we gather a number of interesting papers from the scholarly in the Netherlands, China and Italy. They reported their design research experiences when designing for the specific target user groups.