COVID-19, the Gut, and Nutritional Implications.

Gastrointestinal symptoms of COVID-19 are common and often persist even after classically defined illness resolution. Nutritional status and content have been shown to impact infection risk and severity. Well-balanced diets are associated with decreased infection risk/severity, and early nutrition is associated with better outcomes in the critically ill. No specific vitamin supplementation regimen has shown consistent benefit for infection treatment or prevention. The impact of COVID-19 extends far past the pulmonary system, and its impact on the gut should not be ignored. For those interested in adopting lifestyle modifications to prevent severe COVID-19 infection/side effects, consideration should be made for adoption of a well-balanced diet (e.g., Mediterranean style), utilization of probiotics, and addressing nutritional/vitamin deficiencies. Future, high-quality research is needed in this arena.