
New Studies Link Long COVID Fatigue to Reduced Brain Blood Flow and Dopamine Neuron Loss
Two recent studies identify distinct biological mechanisms behind persistent fatigue in long COVID. A Swedish study found reduced cerebral blood flow in the brains of fatigued patients, while a Canadian study linked the condition to the loss of dopamine-releasing neurons in the striatum. These findings suggest that neurovascular and dopaminergic disruptions may underpin symptoms like exhaustion, slow movement, and memory issues, potentially guiding future treatments.












