Raisins are rich in potassium while low in sodium (3 oz contains 646 mg potassium and 10 mg sodium). It is well accepted that potassium helps to reduce blood pressure. The DASH-Sodium diet (Dietary Approaches to Stop Hypertension), which is rich in potassium, has been successfully used to treat patients with high blood pressure.
Other benefits of a potassium in the diet include:
  • It may reduce the risk of stroke (independent of its effect on blood pressure)
  • It may help prevent the development of some types of kidney disease
  • It reduces calcium excretion which may help bone health and reduce the formation of kidney stones
  • It may play a role in carbohydrate intolerance
  • It may help reduce the risk of heart arrhythmias in some patients with heart disease.

He, FJ and MacGregor, GA. Potassium: more beneficial effects. Climacteric Supplement, 3, 36-48, 2003.