A healthy human brain (left) compared to the brain of a 90 year old (right) which is only two thirds the size of the young brain. Over time, white matter decreases and the brain shrinks. This gradual shrinkage is most extreme between age 70 and 80.
Brains are really freakin’ awesome. I got to hold one last year in my anatomy class, with the full spinal cord attached, including the cauda equina. Unfortunately, I got formaldehyde on my shoes but it was still pretty damn awesome.
(Source: , via swingonaspiral)
