User blog comment:Captaingoldvane2/Administrator Nomination: Jarod Pillagebane/@comment-3152785-20120516185806/@comment-3152785-20120516205201

Actually, brain cells do regenerate. Brain cells do in fact reproduce, but their mitosis cycle takes a lot more time than regular cells, like blood, bone and tissue cells. The interphase of a brain cell is like that of a muscle cell, which only reproduces when they need more, not automatically (unless in the case of cancer, where a cell keeps on reproducing until it kills its host). Brain cells are not used to reproducing often because they are meant to stay, because they store information. When a brain cell is killed, as is the information that it stores.