Insulin resistance and diabetes
Even those without a prior history of diabetes demonstrate abnormal insulin resistance and glycemic abnormalities 2 months after infection.
Even a mild Covid infection is associated with 28% higher risk of developing type 2 diabetes in the year after initial infection.
This suggests the need for diabetes screening even after mild Covid cases.
Sources: Incidence of newly diagnosed diabetes after Covid-19 | SpringerLink and Acute and long-term disruption of glycometabolic control after SARS-CoV-2 infection | Nature Metabolism