The silent risk: understanding high blood pressure and what to do about it
High blood pressure is one of the most common and most consequential health conditions in the UK – and one of the least visible. It rarely causes symptoms. There is no pain, no obvious warning sign, no moment where something clearly feels wrong. Yet persistently raised blood pressure quietly damages blood vessels, strains the heart, and significantly increases the risk of heart attack, stroke, kidney disease and vascular dementia.
World Hypertension Day, observed on 17 May each year, exists precisely because this silence is dangerous. Knowing your numbers is not a minor lifestyle consideration. It can be lifesaving.
What is high blood pressure?
Blood pressure is a measure of the force your blood exerts against the walls of your arteries as your heart pumps. It is recorded as two figures: systolic pressure (the pressure when your heart beats) over diastolic pressure (the pressure when your heart rests between beats). A healthy blood pressure is generally considered to be below 120/80 mmHg.
High blood pressure, or hypertension, is typically diagnosed when readings consistently reach 140/90 mmHg or above. The condition is remarkably common. NHS data suggests that around one in three adults in England has high blood pressure, though many are unaware of it. It becomes more prevalent with age, but it is by no means confined to older adults.
Younger professionals under sustained stress, those with a sedentary lifestyle, individuals carrying excess weight, and those with a family history of cardiovascular disease are all at elevated risk. Dietary factors – particularly high salt intake and low potassium – play a significant role, as does alcohol consumption and smoking.
Why it so often goes undetected
The absence of symptoms is both the defining feature of hypertension and the reason it causes so much harm. People feel well. They have no reason to seek a GP appointment. And because blood pressure can fluctuate throughout the day in response to activity, stress, temperature and even caffeine, a single opportunistic reading does not always tell the full story. What matters is identifying a sustained pattern of elevated readings over time.
In London, where many working professionals rely on the NHS for reactive care rather than routine health monitoring, years can pass without a blood pressure check. Even where numbers are measured at a GP visit, they are not always followed up with the consistency that hypertension management requires.
For those with private healthcare or access to a private GP, regular monitoring becomes far more straightforward – and the conversation about results is more thorough and unhurried. This matters because understanding what a reading means and what to do about it requires time that a brief appointment does not always allow.
The risks of leaving it unmanaged
Untreated hypertension is a significant driver of some of the most serious health events a person can experience. The sustained pressure it places on arterial walls causes them to thicken and stiffen over time, reducing blood flow and increasing the likelihood of blockages.
The heart, working harder against that resistance, can enlarge and weaken. The kidneys, whose filtration function depends on healthy blood flow, can sustain damage that progresses to chronic kidney disease.
Stroke is one of the most direct consequences of poorly controlled blood pressure, as is a heart attack. Hypertension is also strongly associated with an increased risk of vascular dementia, a reality that is prompting growing interest in midlife cardiovascular health as a modifiable factor in cognitive ageing.
The good news is that in most cases, high blood pressure is highly treatable. Lifestyle changes alone can produce meaningful reductions in many people, and where medication is needed, effective options are available and well tolerated.
Getting checked and taking action
The most important thing anyone can do regarding high blood pressure is to know their numbers. If you have not had a blood pressure check recently – or if you have had a reading that concerned you but have not followed it up – World Hypertension Day is a timely prompt to act.
At GP London W1, blood pressure assessment is included as standard within our comprehensive medical packages, which offer a thorough review of cardiovascular risk alongside cholesterol, blood glucose, BMI and a range of other markers.
For those who would prefer a standalone consultation, we are also happy to see patients specifically to discuss blood pressure, assess their overall cardiovascular risk and, where appropriate, arrange further diagnostic investigations or begin a management plan.
We are situated at 25 Harley Street in Central London, with rapid access to diagnostic services and specialist referrals where needed. Whether you have a family history of heart disease, have been told your blood pressure is a little high before, or simply want the reassurance of knowing where you stand, we would be glad to help.
To book a private GP consultation or enquire about our comprehensive medicals, please contact GP London W1 on +44 (0)20 4580 1152 or email [email protected].
