Round up the grandkids: Transfusion of young blood could delay onset of diseases like Alzheimer's

Giving middle-aged people a transfusion of young blood could keep their brain healthy in old age and delay the onset of diseases like Alzheimer's, scientists claim.

Researchers from Stanford University found that old mice given transfusions of younger blood performed better in a memory task than those left to age naturally.

They also began to re-grow connections in their brains which had previously begun to disappear as part of the aging process and which affect memory.