The human brain is a biological wonder with considerable skills. Regeneration, unfortunately, isn’t one of them. Save for one tiny V-shaped region within the hippocampus, the human brain’s ability to rebuild itself is nearly nonexistent. When neurons die, there’s no backup reserve of cells to replace them.
Brain trauma — a blow to the head, a stroke, or neurodegeneration — can be brutally final. You’re not getting lost neurons back. An obvious solution is to... read more