Bananas have the highest potassium content of any fruit (411 mg per 100 g). It also has a low salt content. Potassium and sodium function together in the body, and their balance is crucial for blood pressure management. The more salt in your diet, the more potassium you'll need. In the event of hypertension, the banana is a fruit that should be consumed without hesitation. According to the World Health Organization (WHO), eating a diet high in potassium and low in salt helps to avoid high blood pressure. According to one study, eating a large amount of bananas with a meal (400g, or more than 3 bananas) lowered free radicals in the body two hours later. This diet lowered LDL-cholesterol (bad cholesterol) oxidation, which has been linked to the development of cardiovascular disease. More research is needed, however, to target the benefits of bananas over a longer period of time and at lower dosages.