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Brain inflammation may be the reason behind muscle fatigue after infection and injury — Diego E. Rincon-Limas and Aaron N. Johnson

Illustration of a human profile with an overlay of the brain, highlighting anatomical structures. The skull and spine are visible, with a glowing effect emphasizing the brain's location.

Infectious or chronic diseases such as long COVID, Alzheimer’s disease and traumatic brain injury can cause inflammation in the brain, or neuroinflammation, that weakens muscles. While scientists are aware of this link between inflammation and muscle weakness, the molecules and processes involved have been unclear.

In our research, our team of neuroscientists and biologistsuncovered the hidden conversation between the brain and muscles that triggers muscle fatigue, and potential ways to treat it.