Here are some studies linking Covid and aging .
Epigenomics in COVID-19; the link between DNA methylation, histone modifications and SARS-CoV-2 infection
https://www.ncbi.nlm...les/PMC8074570/
Evidence for Biological Age Acceleration and Telomere Shortening in COVID-19 Survivor
https://pubmed.ncbi....h.gov/34200325/
Virus-induced senescence is driver and therapeutic target in COVID-19
https://www.nature.c...campaign=nature
Methylation Effects of COV-19 Infection and Vaccinations
https://clinicaltria...how/NCT04939155
Increased mTOR signaling, impaired autophagic flux and cell-to-cell viral transmission are hallmarks of SARS-CoV-2 infection
https://www.biorxiv.....10.13.464225v1
Preclinical research shows that COVID-19 infection may dysregulate NAD+ synthesis
https://www.nutritio...e-nad-synthesis
Mitochondria and microbiota dysfunction in COVID-19 pathogenesis
https://www.ncbi.nlm...les/PMC7837003/