"I know I have a parent, but she is no longer there."
The innovation has been described as a breakthrough to combat the disease.
Patterns of weight gain or loss may predict an individual's risk.
"We now know that vitamin D is present in reasonable amounts in human brains, and it seems to be correlated with less decline in cognitive function."
The first signs of the disease have been detected through a chemical - in pee.
It could lead to drugs or lifestyle changes being prescribed when they are most likely to be effective.
Crosswords also caused less brain shrinkage (measured with MRI), seen after 78 weeks.
Drummer Mickey Hart helped develop a game that taught 60 to 79-year-olds how to drum and also improved their ability to remember faces.
The team examined data from more than 2.5 million people.
The findings are based on electronic health records of 559,106 US veterans people diagnosed with type 2 diabetes between January 2000 to December 2019.