A systematic review: The relationship of COVID-19 to iron, zinc, and vitamin D

Background:Primary care physicians are crucial in identifying SARS-CoV-2 infection and transferring suspected cases since they are on the front lines of health care. Micronutrients are used as an adjunctive treatment for viral respiratory infections. Because there is currently no effective antiviral therapy for COVID-19, micronutrients such as iron, zinc, and vitamin D may be important for the survival of critically ill patients.Objective:To establish and emphasize a relationship between iron, zinc, and vitamin D to COVID-19.Materials and Methods:PubMed database was used for articles selection. All relevant articles to our review with the topics regarding the use of iron, zinc and vitamin D in COVID-19 patients. We excluded other articles, which are not related to this field and did not match inclusion criteria. The data extracted according to specific form and double reviewed by the group members.Results:The search of the mentioned database returned a total of 3614 studies that were included for title screening. 2910 of them were included for abstract screening, which lead to the exclusion of 1064 articles. The remaining 1846 publications full texts were reviewed. The full-text revision led to the exclusion of 1812 studies, and 34 were enrolled for final data extraction.Conclusion:This study raised the idea of employing zinc, iron, and vitamin D as ingredients to either protect SARS-CoV-2 patients or to speed up recovery, decrease symptoms severity and decrease mortality rates.