"Revealed: Physical Cause of Fatigue in Long COVID Patients"

A study from Amsterdam UMC and Vrije Universiteit Amsterdam found that the persistent fatigue in long COVID patients is due to mitochondria in muscle cells producing less energy than in healthy individuals. The study observed abnormalities in muscle tissue and decreased mitochondrial function, indicating a biological cause for the fatigue. Additional studies, including those by the NIH, are underway to test potential treatments for long COVID, which affects an estimated 10% to 30% of people who have recovered from a coronavirus infection.