teded: Did you know that as we get older, the hippocampus loses 5% of its neurons every decade? That

teded:

Did you know that as we get older, the hippocampus loses 5% of its neurons every decade? That amounts to a total loss of 20% by the time we are 80 years old - which helps explain why our memories seem to fade.

From the TED-Ed Lesson How memories form and how we lose them - Catharine Young

Animation by Patrick Smith