This just is not true. Although there is evidence of neurogenesis in certain areas of the brain, many of our other neurons live as along as we do unless they are destroyed. Neurogenesis is not the complete “replacement” of old neurons for new ones.

I did not know that neurogenesis happened in adult brains at all until I read you comment and went to pull an article to show you that we don’t make new neurons. But I was wrong. We do. We just keep the old ones too.

So thank you.