“This study provides us with strong evidence that we need to stop looking at Covid-19 as strictly an upper respiratory disease and start viewing it as a systemic disorder that impacts multiple organs,” Douglas C. Wallace, the study’s coauthor, said in a statement. “The continued dysfunction we observed in organs other than the lungs suggests that mitochondrial dysfunction could be causing long-term damage to the internal organs of these patients.”
https://www.forbes.com/sites/ariannajohnson/2023/08/09/long-covid-may-affect-organs-like-the-heart-and-kidneys-after-lungs-recover-new-research-says/