This is where memory is essential to identity formation. The self is assembled not from everything that has happened to us, but from what the brain has chosen to preserve and retrieve.

Tau proteins play an important role in our normal brain function, mainly by helping to stabilize neurons in the brain. But in Alzheimer’s disease, tau proteins can misfold and tangle inside neurons.

In former college and professional football players, a new study has found higher levels of inflammation were associated with worse brain structure, which in turn was related to worse memory. The ...