Is 6.3 cholesterol high?

Is 6.3 Cholesterol High?

If your total cholesterol reading is 6.3 mmol/l, you're likely wondering whether that's something to be concerned about. The short answer is yes—6.3 is considered high, especially when you look at current UK guidelines.

The average total cholesterol level in the UK sits at around 5.7 mmol/l, so a result of 6.3 is above that average. According to health standards, total cholesterol levels between 5 and 6.4 mmol/l are classified as high, while anything from 6.5 to 7.8 mmol/l is considered very high. This means your level is in the upper end of the "high" range, just shy of "very high."

But before jumping to conclusions, it's important to remember that total cholesterol alone doesn’t tell the whole story. This number includes both LDL (often called "bad" cholesterol) and HDL ("good" cholesterol), as well as triglycerides. A more detailed lipid profile can show whether your HDL is helping balance things out or if LDL is the main contributor to that elevated number.

Lifestyle plays a big role in cholesterol levels. Diet, physical activity, smoking, alcohol intake, and even genetics can all influence your results. If your reading is 6.3, it might be a sign to take a closer look at your habits. Simple changes—like eating more fibre, cutting back on saturated fats, increasing physical activity, or quitting smoking—can have a meaningful impact.

That said, if you're concerned, the best step is to speak with your GP. They can interpret your full lipid panel, assess your overall cardiovascular risk, and recommend next steps—whether that’s lifestyle adjustments, monitoring, or medication if needed.