Hi --
The Dr.s Eades' (Protein Power) are pretty big on potassium, and for their view you'd have to read their book(s).
The key bits of the bit below conclude that "a diet high in potassium-rich food may help to protect against heart disease and stroke, according to various studies. One study found that people with high blood pressure who had a daily serving of a potassium-rich foods decreased their risk of fatal stroke by 40%. "
Personally I've found that potassium staches the occurance of cramps, especially in my legs.
Cheers
From
http://www.wholehealthmd.com/
What Is It?
With the exception of calcium and phosphorus, no other mineral is as abundant in the human body as potassium. Most people don't need to take supplements of this mineral because it's so widely available in foods such as bananas, orange juice, and potatoes.
Potassium's task is a formidable one, primarily because of its role as an electrolyte, a mineral that takes on a positive or negative charge when dissolved in the watery medium of body fluids. (Sodium and chloride are other important electrolytes.) To regulate blood pressure and muscle contraction, and to keep nerves, kidneys, and a host of other body processes working properly, the body needs to maintain these electrolytes in a delicate balance.
In addition, potassium aids in converting blood sugar (glucose, the body's foremost fuel), into glycogen, a form of energy that can be stored in the muscles and liver and released as needed.
Health Benefits
A healthy intake of potassium through foods is valuable for general health and can even help to maintain normal blood pressure. In fact, a diet high in potassium-rich food may help to protect against heart disease and stroke, according to various studies. One study found that people with high blood pressure who had a daily serving of a potassium-rich foods decreased their risk of fatal stroke by 40%. Whether this effect was entirely due to the potassium is not entirely clear, however.
Research also indicates that an adequate level of potassium may have a role to play in regulating heartbeat, staving off heart-rhythm abnormalities, and preventing kidney stones.
Specifically, potassium may help to:
# Reduce high blood pressure. Scientists have long known that potassium helps maintain blood pressure. According to the latest studies, people who regularly consume high-potassium foods, such as bananas, avocados, and yogurt, have lower blood pressure than those who don't. For example, in a recent review of 33 studies that examined the effect of potassium on blood pressure, researchers discovered that participants who started out with normal blood pressure and then added 2,340 mg of potassium daily (from foods, supplements, or both) were able to lower their risk of developing high blood pressure by 25%. The reductions were ultimately greatest for people who already had high blood pressure.
A potassium-rich diet may even enable people with high blood pressure to slash their daily dose of prescription medication. In one study of 54 adults with high blood pressure, the majority (81%) of those who were placed on a high-potassium diet--they ate three to six servings of potassium-rich foods daily--were able to safely and dramatically reduce their dosage of high blood pressure medications within 12 months. In contrast, only 29% of those who continued with their normal diets were able to do so.