# Study uses mutations to trace microglia origins in aging brains

Researchers analyzed somatic mutations in human brains to map the developmental origins of microglia, the brain's immune cells. The findings show how microglia are maintained throughout aging, offering insights into their roles in age-related neurological diseases and brain health.

**Importance:** 3/5

## Sources

### Science
- [Nature](https://www.nature.com/articles/s41586-026-10939-0) — 2026-07-30