Coronaviruses are a large family of viruses that can cause disease in both animals and humans. In humans, several coronaviruses are known to cause respiratory infections that can range from the common cold to more serious illnesses such as Middle East Respiratory Syndrome (MERS) and Severe Acute Respiratory Syndrome (SARS). Methods. Nutritional medical treatment is of the utmost importance, given the high energy and protein needs associated with the energy expenditure that the disease entails, and in the recovery phase, which can be long. An inadequate diet, whether it is associated with overweight or obesity or malnutrition, can significantly influence the evolution of Covid-19. Therefore, patients hospitalized for Covid-19 must be properly nourished.