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According to the latest estimates (2016), the brain contains about 86 billion neurons and roughly the same number of glial cells (support cells).

As far as we know, the vast majority of these cells are produced in the womb - during early pregnancy, about 250,000 brain cells are produced every minute. The rest are produced during a short period of time after birth -maybe as little as a few months, or as much as a year.

As a result, the brain produces at least twice as many cells than it actually needs to work properly.

Neurons begin to die before we have even been born and continue to die every day of our lives. Researchers have estimated that about 85,000 neurons die every day in the cerebral cortex. That's equivalent to one every second.

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7y ago

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