Raisins are often considered nature's candy. They are one of the most nutritious dried fruits in existence. Raisins are cholesterol-free, low in sodium and totally fat-free. They provide many necessary vitamins and minerals, including iron, potassium, calcium and certain B vitamins. Raisins are a good source of fiber and are rich in antioxidants. Raisins are an excellent snack for kids or for those that need a quick "pick-me-up".