High Blood Pressure Prevention

High Blood Pressure Prevention

High blood pressure is especially dangerous, because it often gives no warning signs or symptoms. Fortunately, you can find out if you have high blood pressure by having your blood pressure checked regularly. If it is high, you can take steps to lower it. Just as important, if your blood pressure is normal, you can learn how to keep it from rising.

How Can I Prevent High Blood Pressure?

You can prevent high blood pressure by:

·         Maintaining a healthy weight. Being overweight can make you two to six times more likely to develop high blood pressure than if you are at your desirable weight. Even small amounts of weight loss can make a big difference in helping to prevent and treat high blood pressure.

·         Getting regular exercise: People who are physically active have a lower risk of getting high blood pressure -- 20% to 50% lower -- than people who are not active. You don't have to be a marathon runner to benefit from physical activity. Even light activities, if done daily, can help lower your risk.

·         Reducing salt intake: Often, when people with high blood pressure cut back on salt, their blood pressure falls. Cutting back on salt also prevents blood pressure from rising.

·         Drinking alcohol in moderation, if at all: Drinking too much alcohol can raise your blood pressure. To help prevent high blood pressure, limit how much alcohol you drink to no more than two drinks a day. The "Dietary Guidelines for Americans" recommends that for overall health, women should limit their alcohol to no more than one drink a day.

·         Reduce stress: Stress can make blood pressure go up, and over time may contribute to the cause of high blood pressure. There are many steps you can take to reduce your stress. The article on easing stress will get you started.

Other nutrients may also help prevent high blood pressure. Here's a roundup of the research:

·         Potassium. Eating foods rich in potassium will help protect some people from developing high blood pressure. You probably can get enough potassium from your diet, so a supplement isn't necessary (and could be dangerous without a doctor's oversight). Many fruits, vegetables, dairy foods, and fish are good sources of potassium.

·         Calcium. Populations with low calcium intakes have high rates of high blood pressure. However, it has not been proven that taking calcium tablets will prevent high blood pressure. But it is important to be sure to get at least the recommended amount of calcium -- 1,000 milligrams per day for adults 19 to 50 years old and 1,200 mg for those over 50 (pregnant and breastfeeding women also need more) -- from the foods you eat. Dairy foods like low-fat milk, yogurt, and cheese are good sources of calcium. Low-fat and nonfat dairy products have even more calcium than the high-fat types.

·         Magnesium. A diet low in magnesium may make your blood pressure rise. But doctors don't recommend taking extra magnesium to help prevent high blood pressure -- the amount you get in a healthy diet is enough. Magnesium is found in whole grains, green leafy vegetables, nuts, seeds, and dry peas and beans.

·         Fish oils. A type of fat called "omega-3 fatty acids" is found in fatty fish like mackerel and salmon. Large amounts of fish oils may help reduce high blood pressure, but their role in prevention is unclear. Taking fish oil pills is not recommended, because high doses can cause unpleasant side effects. Most fish, if not fried or made with added fat, is low in saturated fat and calories and can be eaten often.

·         Garlic. There has been some evidence to suggest garlic’s effect in lowering blood pressure, in addition to improving cholesterol and reducing some cancers. Further research is being conducted to fully assess garlic’s potential health benefits.

Causes of High Blood Pressure

Causes of High Blood Pressure

What causes high blood pressure?

Blood pressure is the measure of the force of blood pushing against blood vessel walls. The heart pumps blood into the arteries (blood vessels), which carry the blood throughout the body. High blood pressure, also called hypertension, is dangerous because it makes the heart work harder to pump blood to the body and contributes to hardening of the arteries, or atherosclerosis, and to the development of heart failure.

What Is "Normal" Blood Pressure?

A blood pressure reading has a top number (systolic) and bottom number (diastolic). The ranges are:

·         Normal: Less than 120 over 80 (120/80)

·         Prehypertension: 120-139 over 80-89

·         Stage 1 high blood pressure: 140-159 over 90-99

·         Stage 2 high blood pressure: 160 and above over 100 and above

People whose blood pressure is above the normal range should consult their doctor about steps to take to lower it.

What Causes High Blood Pressure?

The exact causes of high blood pressure are not known, but several factors and conditions may play a role in its development, including:

·         Smoking

·         Being overweight or obese

·         Lack of physical activity

·         Too much salt in the diet

·         Too much alcohol consumption (more than 1 to 2 drinks per day)

·         Stress

·         Older age

·         Genetics

·         Family history of high blood pressure

·         Chronic kidney disease

·         Adrenal and thyroid disorders

Essential Hypertension

In as many as 95% of reported high blood pressure cases in the U.S., the underlying cause cannot be determined. This type of high blood pressure is called essential hypertension.

Though essential hypertension remains somewhat mysterious, it has been linked to certain risk factors. High blood pressure tends to run in families and is more likely to affect men than women. Age and race also play a role. In the United States, blacks are twice as likely as whites to have high blood pressure, although the gap begins to narrow around age 44. After age 65, black women have the highest incidence of high blood pressure.

Essential hypertension is also greatly influenced by diet and lifestyle. The link between salt and high blood pressure is especially compelling. People living on the northern islands of Japan eat more salt per capita than anyone else in the world and have the highest incidence of essential hypertension. By contrast, people who add no salt to their food show virtually no traces of essential hypertension.

The majority of all people with high blood pressure are "salt sensitive," meaning that anything more than the minimal bodily need for salt is too much for them and increases their blood pressure. Other factors that can raise the risk of having essential hypertension include obesity; diabetes; stress; insufficient intake of potassium, calcium, and magnesium; lack of physical activity; and chronic alcohol consumption.

Secondary Hypertension

When a direct cause for high blood pressure can be identified, the condition is described as secondary hypertension. Among the known causes of secondary hypertension, kidney disease ranks highest. Hypertension can also be triggered by tumors or other abnormalities that cause the adrenal glands (small glands that sit atop the kidneys) to secrete excess amounts of the hormones that elevate blood pressure. Birth control pills -- specifically those containing estrogen -- and pregnancy can boost blood pressure, as can medications that constrict blood vessels.