“…Clinically, early parenteral nutrition (PN) alone or PN in combination with enteral feedings are strongly discouraged in critically ill patients, and only initiative early enteral nutrition (EEN) is recommended for patients who can be fed enterally [9] . EEN can be beneficial due to its trophic effect on gut mucosa [10] to avoid gut mucosa atrophy and bacteria translocation [11] , while aggressive nutritional support may be detrimental [10] due to the transient over-nutrition discussed above. In the future, high-quality clinical trials on restrictive eating [5] in which only very small amount of enteral nutrition will be provided to support the gut mucosa, and maintain serum fasting to dissipate the transient over-nutrition during SARS-CoV-2 viral infection should be designed to investigate the possible benefits of restrictive eating to COVID-19 recovery.…”