Comedian Jean-Paul Bell proves laughter is the best medicine after all as he brings joy and new life to dementia patients in Australian aged care homes. Jean-Paul calls himself a 'humour valet' and visits patients in nursing homes in Sydney. He's changed the lives of hundreds of people, by bringing humour into sometimes very difficult circumstances. His work is part of the world's first large scale research project into the effects of humour therapy on older people with dementia. And with Australia experiencing a rapidly growing ageing population - in the next 40 years the number of people over 85 is expected to quadruple from 0.4 to 1.8 million - it's more than a laughing matter. It's about quality of life for our elderly.