In most cases where high blood pressure is diagnosed, the cause remains unclear. One review paper in the International Journal of Hypertension explains that this accounts for around 90% of all hypertension diagnosis and is usually referred to as essential hypertension. Secondary hypertension is diagnosed when a cause can be identified. Potential causes of secondary hypertension may include:
In a 2014 review of previous studies, people who consumed probiotics—healthy bacteria found in yogurt and other fermented foods—saw their systolic blood pressure reduced an average of 3.6 points, and their diastolic reduced 2.4 points, compared to those who didn’t. Those with blood pressure higher than 130/85 experienced the greatest reductions, along with those who took probiotic supplements or ate probiotic foods for longer than two months. (Any blood pressure over 120/80 mm Hg is considered elevated.) Experts say any effect probiotics have on blood pressure is likely modest, but that they may play a role in an overall heart-healthy lifestyle.
4. Limit your salt usage. A sudden jump in blood pressure may be a sign of salt-sensitive hypertension. Overall, about half of Americans with high blood pressure are sodium sensitive; it's particularly common in African-Americans and those over age 65. Cutting the salt in your diet can result in anything from a small to a dramatic improvement in high blood pressure, depending on your level of salt sensitivity.
1. Isometric handgrip exercises. An American Heart Association study found that squeezing a spring-loaded handgrip for two minutes, over a period of 12 to 15 minutes three times a week, can help lower blood pressure. Why? The study found that blood flow returns to your hands after the isometric exercise, improving blood vessel function. Another study reported in the journal Hypertension found this exercise produced a 10% drop in both systolic (top number) and diastolic (bottom number) readings when practiced six times a day, five days a week for four weeks.