In the next twenty years, the European Union will gain 17 million people over age 65 – a 30% increase – and 5.5 million more people over age 80, a 39% increase. Disability in old age is frequent and not only lowers the quality of life of its victims, but strains society’s limited resources for assistance, care and rehabilitation. Prevention of disability in old age is therefore a matter of great humanitarian and economic concern.