Evidence Against Adult Human Neurogenesis
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The results here will cause some upheaval in the research community if verified, and will do doubt lead to considerable debate regardless of the outcome. For decades it is has been considered that neurogenesis, the production and integration of new neurons in the brain, continues past childhood, albeit at a lower rate. This is based largely on studies in mice, but also on a range of human evidence. The researchers here suggest that this is wrong, and in fact humans are not like mice in this regard: we do not generate new neurons at any detectable level as adults. This question of adult neurogenesis has great influence on the strategies adopted in the development of therapies that might enhance maintenance of the brain. This is a topic of considerable importance to the future of human rejuvenation: we are our brains, and damage and loss must be repaired in situ. If there are no naturally occurring mechanisms to achieve that goal in some or all of the brain, this suggests that the task will be that much harder to safely achieve.

neurogenesisneurons

One of the liveliest debates in neuroscience over the past half century surrounds whether the human brain renews itself by

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