Do brain cells regenerate?


I’ve heard that brain cells do not regenerate after the birth of a human. But an adult’s brain case is much bigger than a baby’s. What fills up the space? For the love of all that is sacred, please don’t offer any toe-curling attempts at humour in the answer to this serious question.

Its true there is very little regeneration of neurons (the brain cells you’re probably thinking of, that send signals) after the original setup. however, there is another whole segment of brain cells called glial cells, which back up the neurons in various ways – removing chemicals, maintaining the barrier between the brain and the blood etc.

A big part of growth in the brain and nervous system is the process of myelination, in which the glial cells wrap the neurons in what is basically insulation. This is the white stuff (mainly) in white matter of the brain. It lets signals travel more clearly and faster, and the loss of this myelin is the main source of disorder in the disease multiple sclerosis. Myelination is a process that continues well into the teens, and may account for the gain in brain mass.

Do Brain Cells Regenerate

Brain cell is a generic term for the neurons and glial cells. Neurons are nerve cells that process and transmit information through the nervous system. Glial cells provide support, protection, and nutrition to the neurons. Other cells in the brain include epithelial cells that make up the lining of the blood vessels.

Brain cells are commonly thought to remain in the beginning stage of interphase of cell reproduction for their life, and never divide, and instead develop by forming new synapses with other neurons. However, a landmark study in 1998 by researchers from Sweden and the Salk Institute in La Jolla, California, showed for the first time that some brain cells in mature humans may regenerate under certain circumstances

Good luck.

Brain cells are commonly thought to remain in the beginning stage of interphase of cell reproduction for their life, and never divide, and instead develop by forming new synapses with other neurons. However, a landmark study in 1998 by researchers from Sweden and the Salk Institute in La Jolla, California, showed for the first time that some brain cells in mature humans may regenerate under certain circumstances

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RE:
Do brain cells regenerate?
I've heard that brain cells do not regenerate after the birth of a human. But an adult's brain case is much bigger than a baby's. What fills up the space? For the love of all that is sacred, please don't offer any toe-curling attempts at humour in the answer to this serious question.

in the time frame since this question was asked and answered research and experience has proven different with the dual caveats of age and cause of cell mortality. It has been found that younger people do have the physiological ability for brain cells to regenerate under certain circumstances. This is most often when cell damage is due to traumatic injury, so the conventional stance is still held as true to prevent people from expecting too much. Most of this has come from the results found from dealing with head wounds suffered by our military, mostly men, and mostly under the age of thirty, who have received extremely fast emergency surgical care in Iraq and Afghanistan

Humans are unusual in that our brains continue to develop for several years postpartum. That is a requirement of our head size compared to our body size – if a newborn’s head were any larger birth would be a serious problem, and if the mother’s pelvis were any wider walking would be a problem.
I can’t do the subject justice, but neuroscientist Terrence Deacon covers it well in the book listed as a source. The focus of the book is language rather than the brain per se so it is rather scattered throughout.
The upshot is that there is considerable growth of new neurons after birth, slowing considerably in the first years. It is unclear whether it stops altogether or dwindles to the point we can’t tell any more.

Brain cells do regenerate and reproduce. However, the older a person gets, the slower the process is (resulting in a loss of brain cells in the end).

Some consider this a matter of semantics. Do they regenerate? NO, not under normal conditions. They do, however sprout, and form new synapses. Once a nerve cell is dead, it is dead, and it will not regenerate.

Brain cells do not regenerate, yet they do form and as you grow you get more. Adults, however do not get new ones and therefore we must be careful.

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