With a little help, our brains can be trained to heal themselves. After a traumatic brain injury, some of your brain cells go into reset mode, reverting to a stem cell-like state. Using these "reset cells," a group of German researchers were able to coax the brains of injured mice to regrow neurons to replace damaged tissue (the images above are micrographs of the cells regrowing over time).
Though their methods are far from perfect, this breakthrough could help replace dead or damaged brain cells in people suffering from Alzheimer's as well as any type of injury. It's just a matter of extending the brain's natural self-healing powers.
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