The short version
- Cholesterol isn't one number — a full result breaks down into several markers that each tell you something different
- LDL / non-HDL is the "harmful" fraction; HDL is the "protective" one
- The total-cholesterol-to-HDL ratio often predicts risk better than the total on its own
- General healthy targets: total ≤ 5 mmol/L, HDL ≥ 1.0 (men)/1.2 (women), ratio below 4
- Your numbers are only part of your heart-risk picture — age, blood pressure, smoking and family history all count too
You get your cholesterol checked, a slip of paper comes back with four or five numbers on it, and… what does any of it actually mean? Cholesterol is often talked about as a single "high or low" figure, but a proper result is really a small panel of markers. Here's how to read each one.
The markers, one by one
Total cholesterol
The overall amount of cholesterol in your blood. It's a useful headline, but on its own it can be misleading — because it lumps together both the harmful and the protective types. That's why the individual fractions below matter more.
LDL cholesterol (and "non-HDL")
Often called "bad" cholesterol. LDL carries cholesterol to your arteries, where too much can build up and narrow them over time — the process behind most heart attacks and strokes. "Non-HDL" (total minus HDL) is increasingly used because it captures all the harmful types in one number. For these, lower is better.
HDL cholesterol
The "good" cholesterol. HDL helps carry cholesterol away from the arteries and back to the liver to be removed — so here, higher is better. Regular exercise, stopping smoking and a healthier diet all tend to nudge it up.
Triglycerides
A type of fat in the blood, separate from cholesterol. High levels — often linked to excess weight, alcohol, sugary diets and type 2 diabetes — add to cardiovascular risk. These respond particularly well to diet and lifestyle changes.
Total cholesterol : HDL ratio
This divides your total cholesterol by your HDL, and it's one of the most useful single figures — because it weighs the harmful against the protective. Someone with a "high" total but lots of protective HDL can have a healthier ratio than someone with a lower total but very little HDL. The lower the ratio, the better.
The numbers are only half the story
Here's the key thing most people aren't told: your cholesterol result alone doesn't decide your heart risk. What actually matters is your overall cardiovascular risk, which combines your cholesterol with your age, sex, blood pressure, smoking status, weight, ethnicity and family history. That's why the same cholesterol numbers can be reassuring in one person and a prompt to act in another — and why a good check looks at the whole picture, not just one slip of paper.
How to improve your numbers
- Cut saturated fat (fatty and processed meat, butter, pastries) and swap towards unsaturated fats — olive/rapeseed oil, nuts, oily fish.
- Eat more fibre — oats, beans, pulses, fruit and veg — which actively helps lower LDL.
- Move more and, if needed, lose a little weight — both raise HDL and lower triglycerides.
- Stop smoking and watch alcohol — two of the biggest levers on the ratio and triglycerides.
- Know when medication helps — for some people, lifestyle isn't enough and a prescriber may recommend treatment. That's a conversation to have based on your overall risk.
Want to know your numbers?
Our Cardiovascular Health Check in Blackburn measures your full cholesterol panel from a simple finger-prick, alongside blood pressure and other markers — then a pharmacist explains what it all means for your heart, in plain English, on the day.
See what's includedOr call us on 01254 660473