Does Potassium Lower Blood Pressure?


It’s not groundbreaking news that high blood pressure and diet are related. Even when you go the medical doctor route, one of the first things your doctor will suggest is lowering your salt intake to help control your blood pressure. But what else can help? Does potassium lower blood pressure? Often, one important nutritional catalyst is overlooked; and yes, it is indeed potassium.

bananaeaten 235x147 Does Potassium Lower Blood Pressure?

Does Potassium Lower Blood Pressure?

Potassium has several functions in the body, aiding with the proper workings of the heart, kidneys, nerves, muscles and the digestive system. A lack of potassium can manifest itself in many ways, including high blood pressure.

Researchers have looked at the connection between high blood pressure and potassium for decades, determining that simply increasing your potassium intake while lowering your sodium intake is enough to get your blood pressure back under control.

Our friends over at NaturalNews have compiled some pretty telling statements from experts in the medical and nutritional community on the power of potassium in helping control blood pressure.

Sodium and potassium play related role in controlling fluid balance in the body. Without sufficient potassium to help the body secrete sodium, sodium builds up and exerts its harmful effects. Thus, to reduce high blood pressure most people need not only to lower sodium intake but also to increase potassium consumption. Indeed, some studies indicate that potassium intake is a stronger factor in determining blood pressure than is sodium intake. Various population studies confirm a beneficial effect on blood pressure from increases in potassium consumption.

– Off-the-Shelf Natural Health by Mark Mayell

The sudden death that can occur in fasting, anorexia nervosa, or starvation is often a result of heart failure caused by potassium deficiency. Many population studies have found links between low potassium intakes and an increased risk of high blood pressure and death from stroke. Increasing the amount of potassium-rich foods in the diet can lead to a reduction in high blood pressure. The ratio of sodium to potassium in the diet appears to play an important role in the development of high blood pressure. The typical Western diet is low in potassium relative to sodium.

– The New Encyclopedia of Vitamins, Minerals, Supplements and Herbs by Nicola Reavley

One study conducted from St. George’s Medical School in London and published in the April 2005 issue of Hypertension, found that potassium citrate can lower blood pressure just as well as potassium chloride – which has been shown to lower blood pressure. Potassium chloride must be taken in supplement form, while potassium citrate can be attained through foods.


After comparing the blood-pressure-lowering effects of potassium chloride against the effects of potassium citrate, researchers found that each one has similarly positive effects. Adults starting at 151/93 on average found their blood pressure reduced to 140/88 while using potassium chloride, and 138/88 when taking potassium citrate.

Potassium Food Sources

Sure, you could take a potassium supplement. But, why pop a pill when you can get plenty of potassium through healthy food choices. You can get about the same potassium from one bite of a banana as you can from one 99 mg supplement. The following foods are rich in potassium. By cutting down on sodium and eating several of these foods each day, you can combat high blood pressure naturally:

 

 

Long term calcium intake and rates of all cause and cardiovascular mortality: community based prospective longitudinal cohort study.


Abstract

Objective To investigate the association between long term intake of dietary and supplemental calcium and death from all causes and cardiovascular disease.

Design Prospective longitudinal cohort study.

Setting Swedish mammography cohort, a population based cohort established in 1987-90.

Participants 61 433 women (born between 1914 and 1948) followed-up for a median of 19 years.

Main outcome measures Primary outcome measures, identified from registry data, were time to death from all causes (n=11 944) and cause specific cardiovascular disease (n=3862), ischaemic heart disease (n=1932), and stroke (n=1100). Diet was assessed by food frequency questionnaires at baseline and in 1997 for 38 984 women, and intakes of calcium were estimated. Total calcium intake was the sum of dietary and supplemental calcium.

Results The risk patterns with dietary calcium intake were non-linear, with higher rates concentrated around the highest intakes (≥1400 mg/day). Compared with intakes between 600 and 1000 mg/day, intakes above 1400 mg/day were associated with higher death rates from all causes (hazard ratio 1.40, 95% confidence interval 1.17 to 1.67), cardiovascular disease (1 49, 1.09 to 2.02), and ischaemic heart disease (2.14, 1.48 to 3.09) but not from stroke (0.73, 0.33 to 1.65). After sensitivity analysis including marginal structural models, the higher death rate with low dietary calcium intake (<600 mg/day) or with low and high total calcium intake was no longer apparent. Use of calcium tablets (6% users; 500 mg calcium per tablet) was not on average associated with all cause or cause specific mortality but among calcium tablet users with a dietary calcium intake above 1400 mg/day the hazard ratio for all cause mortality was 2.57 (95% confidence interval 1.19 to 5.55).

Conclusion High intakes of calcium in women are associated with higher death rates from all causes and cardiovascular disease but not from stroke.

Source: BMJ