High Blood Pressure: Why Treating It Matters (And What Your Numbers Should Be)

High blood pressure — also called hypertension — is one of the most common health conditions in the UK, and one of the easiest to miss. It usually causes no symptoms at all. Most people who have it feel completely fine. That's exactly what makes it worth understanding, because the damage it causes happens quietly, over years, whether or not you feel it.

What do the numbers actually mean?

A blood pressure reading has two numbers — for example, 120/80. The top number (systolic) is the pressure in your arteries when your heart beats. The bottom number (diastolic) is the pressure when your heart rests between beats. Think of it like water pressure in a hose: too much force, applied constantly, wears down the pipes over time. Your arteries are the pipes.

What's a healthy target?

• A normal, healthy reading is below 120/80.
• Readings from 140/90 and above (measured at a clinic) are generally classed as high blood pressure.
• For most people under 80 who are being treated for high blood pressure, the aim is to bring clinic readings below 140/90.
• For people over 80, the target is a bit more relaxed — below 150/90 — since very tight control can cause its own problems (like dizziness or falls) in older age.
• If you have diabetes or kidney disease, your doctor may set a lower, more personalised target, since these conditions make the arteries more vulnerable.

Your GP will always tailor your specific target to you — age, other conditions, and how well you tolerate treatment all factor in.

What happens if it's left untreated?

This is the part that matters most. High blood pressure doesn't just sit there quietly — over years, it steadily damages blood vessels throughout the body. Left untreated, it significantly raises the risk of:

• Stroke — high pressure can weaken or block blood vessels supplying the brain
• Heart attack and heart failure — the heart has to work harder over time, which can wear it out or damage the arteries feeding it
• Kidney disease — the kidneys rely on healthy blood vessels to filter blood properly
• Vision loss — the blood vessels at the back of the eye can be damaged
• Memory and thinking problems — including a higher long-term risk of dementia, linked to reduced blood flow to the brain over time

None of these happen overnight. That's the trap — because there are no symptoms to warn you, people often don't take it seriously until one of these complications shows up. Treating blood pressure isn't about how you feel today; it's about protecting your heart, brain, and kidneys for decades to come.

Why check it regularly?

Because it has no symptoms, the only way to know your blood pressure is to actually measure it. A few reasons regular monitoring makes a real difference:

• It catches problems early — before any damage has had time to build up, when it's easiest to treat with simple lifestyle changes alone.
• It shows whether treatment is working — if you're on medication or making lifestyle changes, regular readings tell you (and your doctor) whether it's actually having an effect, rather than guessing.
• One high reading doesn't mean much on its own — blood pressure naturally varies through the day, with stress, activity, and even the time you measure it. Frequent monitoring gives a true picture, rather than one snapshot that might be misleadingly high or low.
• Losing weight can help to reduce BP.
• Reducing salt intake also reduces BP.
• It puts you in control — many people find that seeing their own numbers improve with diet, exercise, or medication is genuinely motivating, and helps them stick with the changes that are working.

A simple home blood pressure monitor, used a few times a week (or as your doctor advises), is one of the most useful health habits you can build — cheap, quick, and genuinely protective.

The bottom line: high blood pressure rarely feels like anything — until it becomes something serious. The good news is that it's very manageable once you know your numbers, and even modest improvements in blood pressure control translate into a meaningfully lower risk of stroke and heart disease down the line.

If you or any of your family member has any concerns regarding BP control and need advice, you can book an appointment Essex medical care on line or via telephone.