Is High Blood Pressure Life-Threatening? Experts Explain Risks

Our blood pressure (BP) constantly fluctuates, depending on our activities. The normal range of blood pressure is said to be less than 120/80 mm Hg. High BP, also called hypertension, is consistently at or above 130/80 mm Hg. Is high BP considered dangerous or life-threatening? Today, we will answer this for you in-depth.

To understand this better, the editorial team of OnlyMyHealth reached out to Dr Pooja Pillai, Consultant, Internal Medicine, Aster CMI Hospital, Bangalore and Dr Dinesh Gupta, Director, Internal Medicine, Fortis Hospital, Ludhiana.

Can High Blood Pressure Be Life-threatening?

We should first try to understand whether high BP can be dangerous. Explaining this, Dr Gupta says, “Yes, high BP can be dangerous. It is often called a ‘silent killer’ because it usually has no symptoms in the early stages. In the beginning, there are usually no signs at all, which makes it tricky. Over time, though, it puts much stress on your arteries. That strain leads to serious ailments such as heart attacks or strokes; it can cause problems with your heart function or even your kidneys. Vision problems also arise if the situation persists. Therefore, regular check-ups are important.”

Seconding this view, Dr Pillai says, “Yes, high BP can be life-threatening if it is not controlled, because it silently damages blood vessels and vital organs over time. Often, it has no clear symptoms in the early stages, so many people may not even know they have it until complications appear.”

The Centers for Disease Control and Prevention (CDC) stated the causes of high BP as unhealthy lifestyle choices, such as not getting enough or regular physical activity, and certain health conditions such as diabetes and obesity; high BP can also occur during pregnancy, or to those who have depression, anxiety, stress, or post-traumatic stress disorder, or have family history of high blood pressure.

According to the National Institutes of Health (NIH), when extremely high BP is left untreated, the consequences are fatal. They stated that the average survival time of individuals who did not receive treatment for high BP is around 10.4 months. Such cases witness almost 10% of the death rate in the hospital and 30% chance of fatal heart issues or death within the first year.

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When Does High BP Become Dangerous? Know Warning Signs

Now we know that high BP can indeed be a serious concern. When exactly does it become concerning? “Blood pressure becomes concerning once it consistently exceeds 140/90 mm Hg. The real danger is a hypertensive crisis, where readings go above 180/120 mm Hg. At this point, there is a high risk of organ damage. Some people may show up with a few warning signs, such as severe headache, blurred vision, chest pain, shortness of breath, confusion, nausea, or anxiety. However, many people feel nothing at all, which is why regular check-ups are important,” shares Dr Gupta.

Dr Pillai adds, “High blood pressure becomes dangerous when it stays very high (usually above 140/90 mmHg consistently, or suddenly rises above 180/120 mm Hg), which can lead to serious problems, such as heart attack, stroke, kidney failure, or even vision loss. The constant pressure weakens and narrows arteries, reducing proper blood flow to important organs.” She says that although many people still have no symptoms, there could be warning signs in severe cases, which may include: 

• Headache
• Dizziness
• Chest pain
• Shortness of breath
• Blurred vision
• Nosebleeds

According to the American Heart Association, high blood pressure can lead to:

• Heart attack
• Stroke
• Heart failure
• Kidney disease or failure
• Vision loss
• Sexual dysfunction
• Heart disease
• Atherosclerosis 

Why Does Timely Control of High BP Matter?

Getting the right treatment at the right time is important. Regarding this, Dr Pillai says, “Timely control matters because managing blood pressure with healthy lifestyle changes such as reducing salt intake, maintaining a healthy weight, regular exercise, stress control, and taking medicines (if prescribed) can significantly lower the risk of life-threatening complications, protect the heart and brain, and improve long-term health outcomes.”

Dr Gupta adds, “Controlling blood pressure early can prevent long-term damage. It lowers the risk of stroke by nearly 28 per cent and reduces the chances of other cardiovascular problems by about 15 per cent. More importantly, it helps protect vital organs such as the heart, brain, and kidneys. Delayed control increases the risk of permanent damage.”

As per the World Heart Federation, hypertension is of two types: primary and secondary. It defines these two as follows:

• Primary hypertension is responsible for over 90% of cases, and it is more common as you get older. It may be caused by different factors such as being overweight, a salt-heavy diet, lack of exercise, and drinking alcohol.
• Secondary hypertension is caused by an underlying condition, most commonly kidney problems and endocrine disorders.

Tips to Keep Blood Pressure in Control

You must keep your BP in check to avoid serious health issues. “Keeping your blood pressure in control is not about quick fixes; it is more about consciously making healthy choices every single day. What you consume daily, how active and well-rested you are, plays a major role in your overall health,” advises Dr Gupta. He lists some tips for this:

• Opt for a well-balanced diet including fruits, vegetables, lean protein, and whole grains to keep your heart healthy.
• Cut back on salt.
• Avoiding any kind of packaged foods can make a difference.
• Movement is equally important. Try to stay active most days of the week.
• Try adding up to about 150 minutes of moderate exercise.
• Avoid smoking, limit alcohol, and take 7-8 hours of sleep.  

“Adapting all these habits can make a real difference,” adds Dr Gupta.

The World Health Organization (WHO) noted that you can reduce the risks of hypertension by:

• Reducing and managing stress.
• Regularly checking blood pressure.
• Treating high blood pressure.
• Managing other medical conditions.
• Reducing exposure to polluted air.

Who Is Most At Risk For Fatal Hypertension Events?

The Cleveland Clinic states that you may be at risk of a hypertensive crisis if you:

• Have obesity (BMI of 30 or higher)
• Are male
• Are Black
• Not taking your blood pressure medicines consistently
• Using stimulant drugs that aren’t prescribed for you

They added that these are the possible complications that doctors check for to understand an individual’s risk:

• A sudden, rapid decline in heart function
• Sudden fluid buildup in your lungs
• Sudden loss of kidney function
• A tear in your largest artery
• Bleeding around your brain
• Lack of blood flow to your heart
• Lack of blood flow to your brain or eye
• Temporary brain dysfunction

When To See a Doctor

Dr Gupta advises that it is important to see a doctor if your blood pressure readings are consistently above 130/80 mm Hg. “Even if you feel fine, regular check-ups are essential after the age of 40. If your blood pressure rises above 180/120 mm Hg, it needs immediate medical attention. This becomes even more important if you notice symptoms such as chest pain, difficulty breathing, or signs of a stroke. Additionally, keeping a check at home can also help you understand these patterns and seek help at the right time,” he concludes.

Conclusion

Blood pressure becomes a cause for concern if it consistently shoots up beyond 140/90 mm Hg, or when readings go above 180/120 mm Hg. There is a high risk of organ damage in this case. While some individuals show warning signs such as severe headache, blurred vision, chest pain, or shortness of breath, many people show no symptoms at all. Therefore, it is important to go through regular check-ups and follow a healthy diet and lifestyle.