High Blood Pressure
High Blood Pressure: What You Should Know Before It Becomes a Problem
High blood pressure, also called hypertension, is one of the most common health conditions affecting adults. What makes it particularly important is that it often develops without any obvious symptoms. A person may feel completely healthy while their blood pressure is elevated for months or even years.
When high blood pressure remains uncontrolled over a long period, it can gradually damage the heart, brain, kidneys, eyes and blood vessels. The good news is that hypertension can be detected with a simple blood-pressure measurement and can often be effectively controlled with lifestyle changes, regular monitoring and appropriate medical treatment.
What is blood pressure?
Blood pressure is the force exerted by circulating blood against the walls of your arteries.
A blood-pressure reading has two numbers:
Systolic blood pressure: the upper number, representing the pressure when the heart contracts.
Diastolic blood pressure: the lower number, representing the pressure when the heart relaxes between beats.
Blood pressure naturally changes throughout the day. It can temporarily increase after exercise, during stress, after consuming caffeine or because of pain. Therefore, one abnormal reading does not automatically mean that you have hypertension.
Repeated elevated readings should be discussed with a healthcare professional.
Why is high blood pressure dangerous?
Hypertension can place continuous stress on the walls of blood vessels. Over time, this can contribute to changes in the arteries and damage to important organs.
Uncontrolled high blood pressure can increase the risk of:
Heart attack and other forms of heart disease
Stroke
Heart failure
Kidney disease
Blood-vessel complications
Eye and vision problems
These complications usually do not develop suddenly. They are often the result of blood pressure remaining high over a prolonged period. This is why detecting and managing hypertension early is so important.
Can you have high blood pressure without symptoms?
Yes. Most people with hypertension do not experience specific symptoms.
Headache, dizziness, tiredness or a feeling of uneasiness are sometimes attributed to high blood pressure, but these symptoms are not reliable ways of diagnosing hypertension.
The only dependable way to know your blood pressure is to measure it.
This is particularly important if you have risk factors such as a family history of hypertension, excess body weight, diabetes, kidney disease, smoking, physical inactivity, high salt intake or increasing age.
How should you measure your blood pressure?
Taking the measurement correctly can make a significant difference.
Before checking your blood pressure:
- Avoid strenuous exercise, smoking and caffeinated drinks for about 30 minutes if possible.
- Empty your bladder.
- Sit quietly for around five minutes.
- Keep your back supported and both feet flat on the floor.
- Rest your arm comfortably on a table at approximately heart level.
- Make sure the cuff is appropriate for your arm size.
- Do not talk or use your phone during the measurement.
- If the reading is unexpectedly high, remain calm and repeat the measurement after a few minutes.
If readings remain high on different occasions, keep a record and show it to your doctor.
What can you do to prevent or control high blood pressure?
Lifestyle changes are an important part of preventing and managing hypertension.
- Reduce excess salt
A high-salt diet can contribute to increased blood pressure. Limit foods that are particularly high in salt, including many packaged snacks, processed foods, instant foods, salty pickles and heavily salted meals.
Instead of relying heavily on salt for flavour, use herbs, spices, lemon and other natural flavouring options.
- Stay physically active
Regular physical activity helps maintain cardiovascular health and can contribute to better blood-pressure control.
For many adults, activities such as brisk walking, cycling, swimming or other moderate exercise can be useful. If you have an existing medical condition or have not exercised for a long time, speak with a healthcare professional about an appropriate exercise plan.
- Maintain a healthy weight
Excess body weight can increase the workload on the heart and contribute to high blood pressure.
If you are overweight, even a gradual and sustainable reduction in weight can have health benefits. Focus on long-term dietary and activity habits rather than extreme diets or rapid weight-loss methods.
- Eat a balanced diet
A heart-healthy diet should include plenty of vegetables, fruits, whole grains, pulses and other nutrient-rich foods.
Try to reduce excessive intake of highly processed foods, foods high in saturated fat and foods containing large amounts of added sugar or salt.
- Avoid tobacco
Smoking damages blood vessels and significantly increases cardiovascular risk. If you smoke or use tobacco products, stopping is one of the most important steps you can take for your long-term health.
- Limit alcohol
Excessive alcohol consumption can contribute to high blood pressure and other cardiovascular problems. If you drink alcohol, keeping consumption within recommended limits is important.
- Sleep adequately and manage stress
Poor sleep, chronic stress and an unhealthy daily routine can make it more difficult to maintain good cardiovascular health.
Aim for a regular sleep schedule and make time for activities that help you relax, such as walking, breathing exercises, hobbies or spending time with family.
When should you see a doctor?
You should consult a doctor if your blood-pressure readings are repeatedly higher than the recommended range, even if you feel perfectly well.
Your doctor may consider your age, medical history, family history, lifestyle, other health conditions and repeated blood-pressure measurements before deciding whether further evaluation or treatment is needed.
Do not start, stop or change blood-pressure medication on your own. Treatment is individualized, and regular follow-up may be necessary to ensure that blood pressure is adequately controlled.
When is high blood pressure an emergency?
A very high blood-pressure reading accompanied by concerning symptoms requires urgent medical attention.
Seek emergency care if you have severely elevated blood pressure together with symptoms such as:
Chest pain
Severe difficulty breathing
Sudden weakness or numbness, especially on one side
Difficulty speaking
Sudden confusion
Sudden change or loss of vision
Severe or unusual headache
Loss of consciousness
Do not wait for these symptoms to disappear on their own.
The key message
High blood pressure can be present without any warning signs. Waiting until symptoms appear is therefore not a reliable way to protect yourself.
Regular blood-pressure checks, a balanced diet, physical activity, maintaining a healthy weight, avoiding tobacco, limiting alcohol, getting adequate sleep and seeking medical advice when readings remain high can all contribute to better cardiovascular health.
Most importantly, know your numbers and don't ignore repeated abnormal readings.
A simple blood-pressure check takes only a few minutes, but identifying hypertension early can help reduce the risk of serious complications in the future.
Dr. Syed Aqueel , MBBS
