Why don't nerve cells regenerate?

Nerve cells don't regenerate primarily due to the fact that they are encased in scar tissue, if the nerve suffered a trauma. If the nerve, however, has died due to a neurodegenerative disorder, then that requires a slightly different explanation. read more

Well, the answer is that the brain's neurones have an architecture that's what's called post-mitotic: there are only a few restricted areas in the brain and central nervous system where there are new nerve cells being born in an adult brain. read more

There is in understandable misconception in the details, so I will have to talk about that first: evolution does not select for this most 'optimal' conditions concerning a cell. read more