During the intrauterine period and for the first two years of life, the brain grows in size and the neural pathways mature by a process called myelination. The neurons (brain cells), unlike muscle cells, have no capacity to undergo cell division. Therefore, for the rest of one's life, brain has no capacity to grow further. In fact, neurons continue to degenerate with age and it has been proven that the cortical gray matter shrinks with age. This shrinkage may be more in some people (related to alcohol use, certain diseases affecting the brain, and many more) and less in others. The only situation in which brain size (and certainly not the number of neurons) 'increases' in adulthood is following an injury to the brain when it swells.
2007-01-25 22:01:53
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answer #1
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answered by I 3
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The effect of age upon monoamine oxidase -A and -B (MAO-A and -B) in 23 different regions of human brain was determined. There was a significant positive correlation with age in 19 out of 23 regions for MAO-B, but no positive correlation with age was found for MAO-A. The increased MAO-B activity was found, in 5 out of 5 regions tested, to be due entirely to an increased enzyme concentration, rather than due to an increased molecular turnover number of the enzyme. The responses of the mitochondrial marker enzymes succinate dehydrogenase (SDH) and malate dehydrogenase (MDH) were studied in 5 brain regions, and no consistent change in activity found with age. The lysosomal enzyme acid phosphatase was found to tend towards an increased activity with age. No difference in either the specific activities or molecular characteristics of MAO were found between men and women. Cross-correlation studies of the data, after compensation for the effects of age, indicated that the activities of the two enzyme forms are under some form of organized control across the whole brain. Such a finding is consistent with a genetic regulation of the enzyme forms
2007-01-23 19:11:47
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answer #2
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answered by pramodh k 2
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To a point the brain increases with age. Their is a point at which the brain stops growing bigger and merely increases the connections within the brain. Their should be a way to convince the brain to continue to develop in size past the normal time. I am hoping on a breakthrough such as that for my daughter. My daughter was shaken nearly to death by her baby sitter. As a result of this, she has lost about 50% of her brain volume. She is 20 months old. I am praying that a break through happens with our understanding of the brain such that she might be able to redevelop the brain that she lost when she was shaken. It kills me to see her laying in her crib at her hospital with little hope of ever recovering to be a normal little girl.
2007-01-22 21:28:16
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answer #3
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answered by daddyspanksalot 5
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While the size of the brain may seem to increase, the activity of the brain decreases.
2007-01-22 21:16:55
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answer #4
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answered by Mel K 2
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Unless you are in puberty no. During puberty, your mind gets more responsible. But im not really sure of what you mean by brain increase. That is too general. Increase in memory? logic? common sense? but as you get too old, your brain decrease in everything. That is called alzheimers.
2007-01-22 22:36:04
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answer #5
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answered by Anonymous
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THE SIZE DECREASES... a persons brain is largest in their mid teens, give or take a few years.
the brain of an 80 year old can be 15% smaller than a teens brain.
2007-01-23 09:09:48
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answer #6
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answered by Anonymous
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its a fact that brain size increase till the age of 18 after that cells keep more infromation but brain size remains the same
2007-01-22 23:35:30
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answer #7
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answered by stranger 4
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If you are referring to the total mass of the brain, then the answer is NO. Brain cells die at very fast rate, although our brain contains more than a billion cells, which is never replenished.
2007-01-22 21:29:37
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answer #8
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answered by Spaceman Spiff 3
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up to 17 year their is rise in brain functioning capacity lateron it declines after 40 year n in between these year we can only use the brain developed cant increase it furthre more
2007-01-23 04:00:15
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answer #9
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answered by Anonymous
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Unfortunatly size is decreasing with incresing of age.Neurons are just dying.
2007-01-22 21:22:33
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answer #10
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answered by Anonymous
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