Polyphenols are chemicals found in plants that are believed to have important health benefits, according to the American Cancer Society. Some evidence exists that polyphenols help prevent health dangers such as cancer, high blood pressure, heart disease and diabetes.

Hypotension, or low blood pressure, can be a serious and life-threatening problem if not treated. If blood pressure drops too low, a person can feel dizzy or faint.

Your doctor may advise you to avoid vigorous exercise while you are taking blood thinners, medications used to reduce the formation of blood clots in arteries and veins. Falls or Injuries during vigorous exercise can cause serious internal bleeding.

The mineral magnesium plays several key roles in the body, including the regulation of blood pressure. People who eat diets rich in this nutrient along with others such as potassium tend to have lower blood pressure compared to people whose diets lack adequate levels.

When it comes to over-the-counter (OTC) medicine, doctors are more concerned about what you are taking when you have high blood pressure, or hypertension.

Following a vigorous exercise workout, you may notice symptoms other than sore muscles. If your heartbeat feels abnormal, this could be a sign of a serious problem. Hearing your heart pump in your ears may be normal for you, but you should consult a physician to rule out any serious causes.

Irregular heartbeat may be felt in the form of heart palpitations. These palpitations make it feel as though the heart is pounding, racing, or even skipping beats. A person can also have an irregular heartbeat and not be aware of it.

Beta-blockers are a class of medications prescribed to block the effects of adrenaline, a hormone produced by the adrenal glands. They help the heart work more efficiently, thereby reducing blood pressure, heart rate, muscle tremors and even anxiety.

Mackerel is the name for several species of cold-water, oily fish. These fish are gaining attention because of their high levels of omega-3 fatty acids, which are beneficial for cardiovascular health. The American Heart Association recommends eating fish at least twice per week.

The Centers for Disease Control and Prevention estimates about 67 million American adults have high blood pressure, or hypertension. Sometimes called the "silent killer" because of a lack of symptoms, high blood pressure can increase your risk of stroke or heart attack.

An excess of stomach acid does not cause blood pressure to rise. While high blood pressure, medically termed "hypertension," and heartburn, known as acid reflux, both occur more commonly if you're overweight or obese, one does not cause the other.

Blood ammonia comes primarily from the bacterial breakdown of unabsorbed dietary protein in the intestine. Intestinal ammonia passes into the bloodstream and travels to the liver, which converts ammonia into urea. Urea subsequently passes from the body through the urine.