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.
On a side note: my apologies for not posting lately, since I started school all of my time has been devoted to studying like crazy, the good part of that though is that I'm rocking it! Now that I know what to expect with school I will be able to post more frequently. Cheers.
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