Large Study Details Years of Brain Changes in Alzheimer’s Patients — VOA Learning English
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A long-term study in China has shown that a series of changes take place in the brains of people who get Alzheimer’s disease long before they present signs of the sickness.
The large study followed middle-aged and older adults for 20 years. The individuals were examined on a regular basis during that period. The researchers used brain imaging, spinal fluid checks and other tools to collect data.
The researchers reported that the study subjects who later developed Alzheimer’s showed high levels of disease-linked protein in their spinal fluid. The higher levels were recorded as much as 18 years before the patients were identified as having Alzheimer's.
Then every few years, the study detected…
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