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Brain Found to Be Two Separate Organs
22 Sep
Summary
- Brain's front and back parts originate from different early cell groups.
- New findings may help research into neurological diseases like ALS and SMA.
- Functional hindbrain neurons can now be grown in labs using stem cells.
A new study by Stanford Medicine, published on September 18, 2026, posits that the human brain may not develop as a single, uniform system. Instead, findings suggest the front and back portions of the brain arise from two separate groups of early cells, which then develop and function as one interconnected organ.
This discovery is poised to significantly improve research into severe neurological diseases. Previously, growing certain brain cells in labs proved challenging. However, this research enables the cultivation of functional hindbrain neurons using human stem cells, offering a novel method for studying conditions like amyotrophic lateral sclerosis (ALS) and spinal muscular atrophy (SMA).
While this represents a positive step for future neurological research and treatment, experts caution against immediate clinical changes. The immediate value lies in a better developmental model of the brain and a laboratory tool for studying specific neurons. This could eventually lead to understanding disease mechanisms and identifying drug targets, though substantial further research is required.
