Decreased Blood Flow in Brain Earliest Sign of Alzheimer’s
PhotoCredit:istock Contrary to previous understanding, the first physiological sign of Alzheimer’s disease is a decrease in blood flow in the brain, say researchers. An increase in amyloid protein was considered to be the first detectable sign of Alzheimer’s. While amyloid certainly plays a role, this study found that changes in blood flow were the earliest known warning sign of Alzheimer’s. Led by Alan Evans from Montreal Neurological Institute and Hospital, the researchers analysed more than 7,700 brain images from 1,171 people in various stages of Alzheimer’s progression using a variety…
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