Neurons, thinking cells, are generated in the human brain
in the hippocampus every day. However, their production is influenced by a
number of different environmental factors. For example, the consumption of
alcohol has been shown to retard the generation of new neurons. Studies have
shown that rats that exercise regularly can produce twice as many new cells in
the hippocampus than those who lead a more sedentary lifestyle. However, unless
the rats are cognitively challenged, the new neurons disappear rather quickly
and do not survive indefinitely.
(Shors, Tracey J. “Saving New Bain Cells.” Scientific
American, p 47-48, march 2009)
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