New tests identify very early changes in Alzheimer's disease before symptoms appear

Researchers at the University of Gothenburg in Sweden, together with their colleagues at the Barcelona Beta Research Centre in Spain, the University Medical Centre in Ljubljana, Slovenia, and the University of Paris, have found new forms of tau protein that become abnormal in the very early stages of Alzheimer's disease before cognitive problems develop. The scientists developed new tools to detect these subtle changes and confirmed their results in human samples.