“…Vitamin D deficiency and insufficiency is more prevalent in African Americans, smokers, obese individuals, and people with chronic diseases such as diabetes, hypertension, and various gastroenterological disorders [64] , [65] , [66] , [67] . In COVID-19, the high-risk patients with the greatest complications and death rates are also those with a poor vitamin D status [13] , [16] , [17] , [18] , [19] , [68] , [69] , [70] .…”