Alzheimer's campaigners are urging people to join them on two 'Memory Walks' this weekend.
The events will take place in Cardiff and Swansea.
Joining them with be Rachel Smith, who lost her grandfather two years ago.
- Hear Rachel's story in my report below:
Stanley Smith died in May 2016, after suffering from vascular dementia.
Last year came another blow, with the news that Rachel's other grandfather had been diagnosed with Alzheimer's disease.
Across Wales over 45,000 people are living with dementia and 850,000 are affected UK-wide.
The Alzheimer's Society says dementia is now the UK's biggest killer, with someone developing it every three minutes.
Rachel will be taking part in a Memory Walk this weekend, and says the events are a great source of support.
- You can sign up to the Cardiff Memory Walk on Saturday 1 September and the Swansea Memory Walk on Sunday 13 October at memorywalk.org.uk