Nearly 40 years ago, my grandfather displayed dementia after his retirement as a miner and general labourer. He had a hard life with a retirement that he didn't get chance to enjoy. As a child, it was tough to watch your hero in mental decline. Worse still, there was actually a stigma around the condition at that time.

Happily, that hasn't happened again in my family, but the facts tell us that it will touch most of us.

So, we must all do what we can. If that means walking up a few hills, then that's a small price to pay to support Alzheimer's society.