Very diverse levels of iron, copper, zinc, and nickel have been found in the food rations consumed by the populations of villages in the area of Czarnocin, with average levels of 11.07 mg, 10.08 mg, 0.88 mg, and 140 µg, respectively, with a range of variability ratios from 46% to 65%. These amounts covered 89%, 83%, 45% of the recommended intake of iron, copper and zinc, respectively, and 140% of the presumable demand for nickel.