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Do we really lose thousands of brain cells every day in older age?
Answer: For years, experts believed that, unlike many other cells in the body, neurons did not regenerate. They thought that the brain produced new brain cells only early in life and that once you reached adulthood, the growth of new neurons ceased and existing neurons began to die off.
You may have heard the oft-repeated “fact” that you lose 10,000 brain cells a day. The idea was that your brain was shrinking, and that could mean only one thing: as you lost neurons, you also lost some of your capacity to learn, think, and remember. Researchers now know that this neuron degradation is less pronounced than previously thought....