With the over-64s already comprising just over a quarter of its 128 million population, Japan is at the forefront of devising ways to tackle the challenges posed by a super-ageing society, including the stigma attached to people with Alzheimer’s disease and other forms of dementia.

The disorder affects 4.6 million people in Japan, with the number forecast to rise to 7 million – or one in five people aged 65 or over – by 2025.