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Name: darren
Status: educator
Grade: 9-12
Location: N/A
Country: N/A
Date: June 2006

Question:
My younger sister told me tha her teacher told her that 1000 brain cells die every second is that true?



Replies:
There are probably 1000 cells in every part of your body dying every second. It is estimated that you have over one trillion (1000 billion) cells in your body. Most of the time, when the cells die they are replaced by mitosis (cell division).

Van Hoeck


There is a great deal of speculation about the number of brain cells that a person looses to death every day. The problem comes from the fact that most brain cells are glia cells which assist, support and protect the neurons. A good article is found at this site:

http://www.madsci.org/posts/archives/mar2002/1016223301.Cb.r.html

However, many will argue that the glia cells really do not count and the neurons stay pretty much the same in number throughout life, but maybe not in physical condition.

New information is available all the time on this subject and related topics.

Steve Sample


That is not quite right. You have around 9,000 brain cells a day after you are 20 years old. We have around 100 billion brain cells, so 9,000 is not that many. The cells that are still alive form new connections, helping the brain to still function well. Things like drugs, laughing gas, smelling paint thinners, and alcohol can increase the brain cell death rate to up to 300, 000 a day.

Grace Fields



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