Blood test may detect Alzheimer’s early

A simple blood test for Alzheimer’s, capable of spotting the disease 20 years before memory loss and confusion occur, is on the horizon. Scientists found that tiny fragments of a protein in the brains of people with dementia also start to circulate in the blood early on in the illness. The discovery opens the door to widespread screening and will enable doctors to detect the condition far earlier, when it may be possible to halt or reverse deterioration in the brain.