Scientists say a new drinkable compound shows promise in fighting Alzheimer's disease in mice, and may even restore memories.

And the number of people living with dementia could more than double again by 2050, researchers say.

When proteins don't fold into the right shape, they don't work right. New research digs into how cells decide to save or scrap the misfolded proteins.

In a small study, MRI brain scans predicted with 89 percent accuracy who would go on to develop dementia within three years.

The discovery could lead to reducing risk of Alzheimer's disease by targeting the right genes and proteins to manage cholesterol and triglycerides.

The scaffold, which delivers stem cells and is biodegradable, could help treat Alzheimer's and Parkinson's diseases, as well as spine and brain injuries.