Extremely rich in iron, fiber, and antioxidants, they are plentiful in natural sugar (majority in fructose), Vitamins (A & B) and other minerals, including potassium and calcium. High Energy- If you’re an athlete or simply trying to gain weight healthfully. Eat raisins, if adding calories is your goal. Helps in lowering cholesterol when included in daily diet.Compared to a small box of cranberries, raisins contain less fat, as much potassium as a small banana, more protein and fiber and five times more calcium.