Harvard expert Dr William Li is convinced that the most powerful way to beat disease - from cancer to dementia - is to prevent it in the first place. Here the doctor recommends foods that could do just that.
The first 'dementia friendly' ambulances in the UK have been launched by East Midlands Ambulance Service.
The four ambulances have been adapted to make them less frightening and confusing for people with dementia.
Some of the additions include: