Up to 70% of SARS-CoV-2 infected have reduced organ function for 4 months or more after infection, which leads to an increased risk of developing chronic diseases in e.g. lungs, kidneys and the cardiovascular system.

“Even though the etiology of COVID-19 is complex and there are multiple factors involved, decreased organ function has been associated with mitochondrial dysfunction for both the acute phase and post-acute phase of COVID”

“Lower rates of gas exchange in the lungs may contribute to impaired cognitive function ("brain fog") tied to long COVID, according to a small study to be presented at next week's Radiological Society of North America's (RSNA's) annual meeting in Chicago.

Pulmonary gas exchange is the movement of oxygen from the lungs to the bloodstream and carbon dioxide from the bloodstream to the lungs.”