Research from the University of Otago may help detect Alzheimer's disease long before symptoms start to show.
The research, published in the journal Alzheimer's & Dementia, shows the level of small molecules called microRNA, that are found in blood plasma, dynamically change as the symptoms of Alzheimer's disease get worse.
The team leader of the research, Associate Professor Joanna Williams, said changes could be seen in people's blood when a person had been diagnosed with Alzheimer's.
Research indicates changes to the molecules in blood occur long before symptoms appear.