New Study Reveals Adult Brains Continue to Grow New Neurons, Challenging Decades-Old Assumptions
A groundbreaking study from Sweden has provided compelling evidence that the adult human brain continues to generate new neurons well into old age, debunking the long-standing belief that brain cell growth halts after childhood. This discovery, published in the journal Science and highlighted in a recent Gizmodo report, offers new hope for future treatments of neurological and psychological disorders, and reshapes our understanding of the brain’s lifelong potential.
For decades, it was widely believed—taught both in schools and medical textbooks—that the human brain reached its full complement of neurons in early life, and that no new neurons were formed past childhood. While previous studies hinted at ongoing brain cell growth, scientific opinion remained split, with some researchers finding scant evidence for adult neurogenesis and others reporting clear signs. The confusion was particularly acute when it came to humans, since much of the existing evidence came from studies in animals such as mice or pigs.