New Science
Friday, 7/3, 09:34 PM
Why aging muscles heal slowly, and the trade-off in making them young again
- As we age, our muscles repair themselves more slowly, and scientists have long wanted to know why — and whether it can be reversed.
- A new study points to a single protein that acts as a brake on aging muscle stem cells.
- Blocking it made old cells behave young again, but researchers found a catch: the same brake that slows repair also helps the cells survive.