An ambitious NIH study has brought new attention to chronic fatigue syndrome NPRStudy of Patients With a Chronic Fatigue Condition May Offer Clues to Long Covid The New York TimesScientists find link between brain imbalance and chronic fatigue syndrome The GuardianNIH study of ME/CFS points to clear biological hallmarks – STAT STATLong COVID can destroy your ability to exercise. Now we know why. National Geographic