In a landmark discovery, a recent study from Sweden's Karolinska Institutet has overturned the long-held belief that the human brain stops producing new neurons after adolescence. Researchers found that adults continue to generate new brain cells, a process known as neurogenesis, within the hippocampus—the crucial region for memory and learning. By analyzing brain tissue from individuals of all ages, the study identified the continuous creation of new neurons. This finding not only deepens our understanding of brain aging but also opens promising new avenues for developing regenerative treatments for neurodegenerative diseases and psychiatric disorders....