Dr Joel teelucksingh
Hypertension does not usually announce itself dramatically. There is often no warning siren, no dramatic collapse, no sharp pain demanding urgent attention. Instead, it works quietly in the background, slowly damaging blood vessels, the heart, kidneys, brain and eyes.
That silence is precisely why hypertension remains one of the greatest public health threats in the world.
World Hypertension Day was observed on May 17 with the theme “Controlling Hypertension Together!”. Despite decades of awareness campaigns, this condition continues to affect millions of people globally. Even more worrying is the number of people who have no idea they are living with it.
The body can adapt remarkably well to elevated blood pressure for years. Unfortunately, adaptation is not the same as safety.
By the time symptoms appear, damage may already be advanced.
A stroke may be the first sign. A heart attack. Kidney failure. Blurred vision. Heart failure.
There are broadly two major types of hypertension: primary and secondary.
And 90 to 95 per cent of cases have primary or essential hypertension. There is no single identifiable cause. Instead, it develops gradually through a combination of genetics, ageing, diet, obesity, inactivity, stress and environmental factors.
Modern life practically fertilises it.
Secondary hypertension is different. Here, elevated blood pressure develops because of an underlying medical condition. Kidney disease is a major culprit. Hormonal disorders such as thyroid or adrenal issues can also drive blood pressure dangerously high. Obstructive sleep apnoea is increasingly recognised as an important contributor. Certain medications including steroids, some contraceptive pills, anti-inflammatory drugs, decongestants and even herbal supplements may also elevate blood pressure.
Doctors become particularly suspicious of secondary hypertension when severe blood pressure develops suddenly in a younger patient or becomes difficult to control despite multiple medications.
Blood pressure is simply the force of blood pushing against artery walls. Some is essential because blood must circulate continuously to deliver oxygen and nutrients throughout the body. Problems begin when that pressure remains consistently elevated over time.
Imagine inflating a tyre far beyond its recommended limit every day for years.
Eventually the strain causes damage. Blood vessels behave similarly. Constant high pressure injures delicate vessel walls and accelerates processes such as atherosclerosis, vessel stiffening and organ damage.
The heart itself also suffers.
Forced to pump against increased resistance, the heart muscle gradually thickens. At first this may compensate effectively, but eventually the heart becomes less efficient and more vulnerable to failure, arrhythmias and coronary disease.
The kidneys are particularly vulnerable because they contain thousands of tiny blood vessels responsible for filtration. Hypertension quietly scars these structures over time. Many patients only discover this when routine blood tests suddenly reveal declining kidney function.
Hypertension is also one of the leading risk factors for stroke and is increasingly linked to vascular dementia and cognitive decline. In other words, uncontrolled blood pressure can affect not only how long we live, but how well we live.
Part of the problem is psychological. Conditions such as cancer provoke fear because they feel immediate and dramatic. Hypertension sounds ordinary by comparison. Some people even refer to it affectionately as “pressure,” as though it were a minor inconvenience rather than a major cardiovascular risk factor.
There is also a cultural dimension.
Modern lifestyles have created ideal conditions for hypertension to flourish. Processed foods loaded with salt are everywhere. Physical inactivity has become normalised. Sleep is often sacrificed. Stress levels remain chronically elevated. Obesity rates continue to climb.
Alcohol consumption remains significant in many populations. In Trinidad and Tobago, even traffic deserves an honourable mention.
The body responds to ongoing psychological stress by releasing hormones such as adrenaline and cortisol. Blood vessels constrict. Heart rate rises. Blood pressure increases. What evolved as a short-term
survival mechanism becomes harmful when activated continuously by financial worries, overwork, poor sleep and emotional strain.
Hypertension, diabetes, heart disease and obesity so often appear together as the “cardio-kidney-metabolic syndrome”.
Diet also plays a major role. Excess sodium intake contributes significantly to hypertension, yet many people underestimate how much salt they consume daily. The maximum recommended amount is 1 teaspoonful daily. It is not just the salt shaker at the table. Processed meats, canned foods, fast food, crisps, snacks and sauces often contain astonishing amounts of hidden sodium.
At the same time, diets low in fruits, vegetables, nuts, legumes and potassium-rich foods remove natural protective factors.
Excess body fat, particularly abdominal obesity, increases the workload on the heart and contributes to insulin resistance, inflammation and hormonal changes that raise blood pressure.
One of the most worrying trends in recent years is the increasing number of younger patients developing hypertension. Conditions once associated mainly with older adults are now appearing in people in their thirties and forties, sometimes even younger.
Part of this reflects lifestyle changes, but part also reflects improved detection. Blood pressure machines are more widely available, and health screenings are identifying problems earlier.
That is a good thing as hypertension is highly treatable.
Lifestyle modification remains the foundation of treatment. Regular exercise lowers blood pressure significantly. Weight reduction helps. Limiting alcohol intake helps. Reducing sodium intake helps. Better sleep helps. Managing stress helps. Stopping smoking helps.
Changing habits is extraordinarily difficult, particularly when unhealthy environments surround us constantly. It is easier to buy fast food than prepare healthy meals after a long workday. It is easier to scroll through phones late into the night than prioritise sleep. It is easier to postpone exercise “until tomorrow.”
Consistency matters more than occasional bursts of motivation.
Medication also remains essential for many patients, and this is where another dangerous myth appears. Some people resist antihypertensive medication because they believe taking tablets represents weakness or failure. Others stop treatment once they begin feeling better.
This approach is risky. Blood pressure medication controls hypertension; it does not usually cure the underlying tendency. Stopping treatment abruptly often allows blood pressure to rise again silently.
Modern antihypertensive agents are remarkably effective and have prevented countless strokes, heart attacks and deaths worldwide. Different classes of medication work through different mechanisms. Some relax blood vessels. Others reduce fluid retention. Some slow heart rate or block hormonal systems that contribute to elevated pressure.
Combination therapy is often necessary. Many patients require two or more medications to achieve adequate control, particularly when hypertension coexists with diabetes or kidney disease.
The goal is reducing long-term risk. Every reduction in blood pressure lowers the likelihood of devastating complications. This is why regular
monitoring matters so much. Many pharmacies, clinics and health fairs now offer blood pressure checks, yet people still avoid them because they are afraid of discovering a problem.
Knowing your numbers matters.
For most adults, blood pressure below 120/80 mmHg is considered ideal. Persistent readings above 130/80 usually require evaluation and often treatment, although targets may vary depending on age and medical conditions.
Home blood pressure monitoring can also be extremely useful because anxiety in clinical settings sometimes causes temporary elevations or “white coat hypertension.”
Technology has improved awareness considerably. Smart watches and health apps now track everything from heart rate to sleep patterns. Yet despite all this technology, the fundamentals remain stubbornly old-fashioned.
Move more. Eat better. Sleep properly. Manage stress. Take prescribed medication consistently.
There is another important lesson hidden within World Hypertension Day.
Prevention rarely receives the admiration it deserves because successful prevention is invisible. Nobody sees the stroke that never happened. Nobody applauds the heart attack avoided quietly through years of controlled blood pressure.
But these invisible victories matter enormously.
That should give people hope, not fear.
World Hypertension Day is ultimately a reminder that health is shaped less by dramatic moments and more by repeated daily decisions. Tiny habits accumulate quietly over years, either protecting the body or damaging it.
Perhaps the most important message this year is simple:
Do not wait for symptoms to start listening to your body.
Key facts about hypertension
Hypertension usually has no symptoms until significant damage has occurred.
It is a major risk factor for stroke, heart attack, kidney failure and dementia.
Around 90–95% of cases are primary (no single identifiable cause).
Secondary hypertension is caused by underlying conditions such as kidney disease, hormonal disorders and sleep apnoea.
Lifestyle factors play a major role: diet, inactivity, stress, obesity and alcohol use.
Excess salt intake significantly increases blood pressure risk.
The heart, kidneys and blood vessels are most commonly affected organs.
Many people remain undiagnosed until routine screening or a medical emergency.
Hypertension is highly treatable, but requires long-term management.
Lifestyle changes and medication together are often necessary for control.
