High Blood Pressure (Hypertension) – The Silent Killer
High Blood Pressure (Hypertension) – The Silent Killer – The more blood your heart pumps and the narrower your arteries, the higher your blood pressure.
What is High Blood Pressure?
High blood pressure is a common condition in which the long-term force of the blood against your artery walls is high enough that it may eventually cause health problems, such as heart disease.
Blood pressure is determined both by the amount of blood your heart pumps and the amount of resistance to blood flow in your arteries. The more blood your heart pumps and the narrower your arteries, the higher your blood pressure.
You can have high blood pressure (hypertension) for years without any symptoms. Even without symptoms, damage to blood vessels and your heart continues and can be detected. Uncontrolled high blood pressure increases your risk of serious health problems, including heart attack and stroke.
High blood pressure generally develops over many years, and it affects nearly everyone eventually. Fortunately, high blood pressure can be easily detected. And once you know you have high blood pressure, you can work with your doctor to control it.
Blood pressure measurements fall into four general categories:
Normal blood pressure – Your blood pressure is normal if it’s below 120/80 mm Hg.
Prehypertension – Prehypertension is a systolic pressure ranging from 120 to 139 mm Hg or a diastolic pressure ranging from 80 to 89 mm Hg. Prehypertension tends to get worse over time.
Stage 1 hypertension – Stage 1 hypertension is a systolic pressure ranging from 140 to 159 mm Hg or a diastolic pressure ranging from 90 to 99 mm Hg.
Stage 2 hypertension – More severe hypertension, stage 2 hypertension is a systolic pressure of 160 mm Hg or higher or a diastolic pressure of 100 mm Hg or higher.
What are the Symptoms?
Most people with high blood pressure have no signs or symptoms, even if blood pressure readings reach dangerously high levels.
A few people with high blood pressure may have headaches, shortness of breath or nosebleeds, but these signs and symptoms aren’t specific and usually don’t occur until high blood pressure has reached a severe or life-threatening stage.
What are the Causes?
There are two types of high blood pressure.
Primary (essential) hypertension – For most adults, there’s no identifiable cause of high blood pressure. This type of high blood pressure, called primary (essential) hypertension, tends to develop gradually over many years.
Secondary hypertension – Some people have high blood pressure caused by an underlying condition. This type of high blood pressure, called secondary hypertension, tends to appear suddenly and cause higher blood pressure than does primary hypertension. Various conditions and medications can lead to secondary hypertension, including:
- Obstructive sleep apnea
- Kidney problems
- Adrenal gland tumors
- Thyroid problems
- Certain defects in blood vessels you’re born with (congenital)
- Certain medications, such as birth control pills, cold remedies, decongestants, over-the-counter pain relievers and some prescription drugs
- Illegal drugs, such as cocaine and amphetamines
- Alcohol abuse or chronic alcohol use
What are the Risk Factors?
High blood pressure has many risk factors, including:
Age – The risk of high blood pressure increases as you age. Through early middle age, or about age 45, high blood pressure is more common in men. Women are more likely to develop high blood pressure after age 65.
Race – High blood pressure is particularly common among blacks, Indians, especially in Asian countries, often developing at an earlier age than it does in whites. Serious complications, such as stroke, heart attack and kidney failure are common. The reason for this is still unknown.
Family history – High blood pressure tends to run in families.
Being overweight or obese – The more you weigh the more blood you need to supply oxygen and nutrients to your tissues. As the volume of blood circulated through your blood vessels increases, so does the pressure on your artery walls.
Not being physically active – People who are inactive tend to have higher heart rates. The higher your heart rate, the harder your heart must work with each contraction and the stronger the force on your arteries. Lack of physical activity also increases the risk of being overweight.
Using tobacco – Not only does smoking or chewing tobacco immediately raise your blood pressure temporarily, but the chemicals in tobacco can damage the lining of your artery walls. This can cause your arteries to narrow, increasing your blood pressure. Secondhand smoke also can increase your blood pressure.
Too much salt (sodium) in your diet – Too much sodium in your diet can cause your body to retain fluid, which increases blood pressure.
Too little potassium in your diet – Potassium helps balance the amount of sodium in your cells. If you don’t get enough potassium in your diet or retain enough potassium, you may accumulate too much sodium in your blood.
Too little vitamin D in your diet – It’s uncertain if having too little vitamin D in your diet can lead to high blood pressure. Vitamin D may affect an enzyme produced by your kidneys that affects your blood pressure.
Drinking too much alcohol – Over time, heavy drinking can damage your heart. Having more than two drinks a day for men and more than one drink a day for women may affect your blood pressure.
Stress – High levels of stress can lead to a temporary increase in blood pressure. If you try to relax by eating more, using tobacco or drinking alcohol, you may only increase problems with high blood pressure.
Certain chronic conditions – Certain chronic conditions also may increase your risk of high blood pressure, such as kidney disease, diabetes and sleep apnea.
Note – Sometimes pregnancy contributes to high blood pressure, as well.
Take care of your kid – Although high blood pressure is most common in adults, children may be at risk, too. For some children, high blood pressure is caused by problems with the kidneys or heart. But for a growing number of kids, poor lifestyle habits, such as an unhealthy diet, obesity and lack of exercise, contribute to high blood pressure.
What are the Complications?
The excessive pressure on your artery walls caused by high blood pressure can damage your blood vessels, as well as organs in your body. The higher your blood pressure and the longer it goes uncontrolled, the greater the damage.
Uncontrolled high blood pressure can lead to:
Heart attack or stroke – High blood pressure can cause hardening and thickening of the arteries (atherosclerosis), which can lead to a heart attack, stroke or other complications.
Aneurysm – Increased blood pressure can cause your blood vessels to weaken and bulge, forming an aneurysm. If an aneurysm ruptures, it can be life-threatening.
Heart failure – To pump blood against the higher pressure in your vessels, your heart muscle thickens. Eventually, the thickened muscle may have a hard time pumping enough blood to meet your body’s needs, which can lead to heart failure.
Weakened and narrowed blood vessels in your kidneys – This can prevent these organs from functioning normally.
Thickened, narrowed or torn blood vessels in the eyes – This can result in vision loss.
Metabolic syndrome – This syndrome is a cluster of disorders of your body’s metabolism, including increased waist circumference; high triglycerides; low high-density lipoprotein (HDL) cholesterol, the “good” cholesterol; high blood pressure; and high insulin levels. These conditions make you more likely to develop diabetes, heart disease and stroke.
Trouble with memory or understanding – Uncontrolled high blood pressure may also affect your ability to think, remember and learn. Trouble with memory or understanding concepts is more common in people with high blood pressure.
How to Control High BP without Medication?
If you’ve been diagnosed with high blood pressure, you might be worried about taking medication to bring your numbers down.
Lifestyle plays an important role in treating your high blood pressure. If you successfully control your blood pressure with a healthy lifestyle, you might avoid, delay or reduce the need for medication.
Here are 10 lifestyle changes you can make to lower your blood pressure and keep it down.
1.Lose extra pounds and watch your waistline
Blood pressure often increases as weight increases. Being overweight also can cause disrupted breathing while you sleep (sleep apnea), which further raises your blood pressure. Weight loss is one of the most effective lifestyle changes for controlling blood pressure.
Besides shedding weight, you generally should also keep an eye on your waistline. Carrying too much weight around your waist can put you at greater risk of high blood pressure.
2. Exercise regularly
Regular physical activity – at least 30 minutes most days of the week – can lower your blood pressure by 4 to 9 millimeters of mercury (mm Hg). It’s important to be consistent because if you stop exercising, your blood pressure can rise again.
If you have slightly high blood pressure (prehypertension), exercise can help you avoid developing full-blown hypertension. If you already have hypertension, regular physical activity can bring your blood pressure down to safer levels.
The best types of exercise for lowering blood pressure include walking, jogging, cycling, swimming or dancing. Strength training also can help reduce blood pressure.
3. Eat a healthy diet
Eating a diet that is rich in whole grains, fruits, vegetables and low-fat dairy products and skimps on saturated fat and cholesterol can lower your blood pressure by up to 14 mm Hg. This eating plan is known as the Dietary Approaches to Stop Hypertension (DASH) diet.
Potassium can lessen the effects of sodium on blood pressure. The best source of potassium is food, such as fruits and vegetables, rather than supplements (Vitamin tablets).
4. Reduce sodium in your diet
Even a small reduction in the sodium (Salt) in your diet can reduce blood pressure by 2 to 8 mm Hg.
5. Limit the amount of alcohol you drink
Alcohol can be both good and bad for your health. In small amounts, it can potentially lower your blood pressure by 2 to 4 mm Hg.
Drinking more than moderate amounts of alcohol can actually raise blood pressure by several points. It can also reduce the effectiveness of blood pressure medications.
6. Quit smoking
Each cigarette you smoke increases your blood pressure for many minutes after you finish. Quitting smoking helps your blood pressure return to normal. People who quit smoking, regardless of age, have substantial increases in life expectancy.
7. Cut back on caffeine
The role caffeine plays in blood pressure is still debated. Caffeine can raise blood pressure by as much as 10 mm Hg in people who rarely consume it, but there is little to no strong effect on blood pressure in habitual coffee drinkers.
To see if caffeine raises your blood pressure, check your pressure within 30 minutes of drinking a caffeinated beverage. If your blood pressure increases by 5 to 10 mm Hg, you may be sensitive to the blood pressure raising effects of caffeine.
8. Reduce your stress
Chronic stress is an important contributor to high blood pressure. Occasional stress also can contribute to high blood pressure if you react to stress by eating unhealthy food, drinking alcohol or smoking.
Take some time to think about what causes you to feel stressed, such as work, family, finances or illness. Once you know what’s causing your stress, consider how you can eliminate or reduce stress.
Take 15 to 20 minutes a day to sit quietly and breathe deeply. Try to intentionally enjoy what you do rather than hurrying through your “relaxing activities” at a stressful pace.
9. Monitor your BP at home and see your doctor regularly
Home monitoring can help you keep tabs on your blood pressure, make certain your lifestyle changes are working, and alert you and your doctor to potential health complications. Blood pressure monitors are available widely and without a prescription. Talk to your doctor about home monitoring before you get started.
Regular visits with your doctor are also key to controlling your blood pressure. If your blood pressure is under control, you might need to visit your doctor only every six to 12 months, depending on other conditions you might have.
10. Get support
Supportive family and friends can help improve your health. They may encourage you to take care of yourself, take the help of your doctor or embark on an exercise program with you to keep your blood pressure low.