“…The various pathophysiological mechanisms for glucocorticoid‐associated hyperglycemia are as follows: increased endogenous glucose production, impaired peripheral insulin sensitivity, reduced peripheral glucose uptake of muscle and adipose tissue, enhanced effects of other counter‐regulatory hormones that increase endogenous gluconeogenesis, and inhibition of the production and secretion of insulin from pancreatic beta‐cells 2,8,9 . Therefore, many patients with severe COVID‐19 pneumonia suffer from hyperglycemia derived from stress caused by a viral infection, comorbidity of diabetes mellitus, parenteral nutrition, and glucocorticoid use 1,2 . Many reports have shown that hyperglycemia in critically ill patients negatively affects prognosis 10–12 .…”