The First look of raisin may not be appealing being so wrinkly dry and dark in color. But, actually they are natural alternatives to candies. Raisins have been known to be useful in treatment of gastrointestinal troubles like constipation, but now it is being found that raisins are useful for improving performance of every system of the body. Raisins have been declared as one of the most healthy snack food that can be binged upon instead of chocolates or other unhealthy snacks. A handful of raisins offer a rich source of iron, potassium and B vitamins. Additionally, they are also loaded with carbohydrates that offer instant levels of energy on consumption.