One of the biological pathways that lead to age-related cognitive decline has been discovered by scientists.

It all comes down to the blood-brain barrier, a membrane that separates the brain from blood circulating in the rest of the body. When it gets disrupted - due to trauma or age - proteins leak through that can wreak havoc in the brain.
In a talk at the AAAS meeting in Washington DC, Kaufer will be discussing new data from experiments in mice and humans that explain the link between blood-brain barrier disruption and declining cognitive function. She will also present new work showing how even very old brains can be made young again.
Source-Eurekalert