My mother has dementia.

She and my father have been married for 62 years. There are many days now when she does not recognise him. There are days when she does not remember that I am her only child.

She hasn't gone. She is being taken away brick by brick, and this should not be happening. Not to her, not to my father and not to the one in three people born int he UK today who will develop dementia in their lifetime.

On Monday 28th September I'm walking 100 laps of the outfield at Lord's - roughly 50 km in a single day - for the Alzheimer's Society and Sports United Against Dementia. Its one of a hundred places on the pitch, and it ends climbing the Pavilion steps into the Long Room as a Lord's centurion.

This means a huge amount to me. I sit on the board of Insurance United Against Dementia, the Insurance industry's equivalent to Sports United Against Dementia. I joined it for my mother. Every lap funds two things: 1. support for the families dealing with dementia right now and research so that fewer families have to deal with it later.

Any donation would be appreciated. I genuinely believe we can beat this disease with focus and funding.

Tracy-Lee