“…Vitamin D plays a multi-faceted role in human health. Specifically, its blood levels are associated with a range of health conditions and risks, including maternal and child health [3,4], reproductive functions [5][6][7], physical performance [8], renal function [9], and sleep quality [10], as well as diseases like cancer [11][12][13][14], lung disease [15][16][17][18][19], vascular disease [20][21][22], metabolic syndrome [23,24], dementia [25,26], psychiatric disorders [27][28][29][30], viral diseases [31][32][33][34][35] including COVID-19, and intractable diseases like myofibromyalgia [36]. Furthermore, adequate vitamin D levels can reduce chronic inflammation, a known trigger for various serious diseases [37,38].…”