Patient Guide

Understanding Your Cholesterol Report

Name: Understanding Your Cholesterol Report: Complete Guide
Creator: Suman Konda
Published: 2026-07-05

Your lipid profile report has four key numbers. This guide walks through each one, what it means for your heart health, and what targets to aim for.¹

Written by Suman Konda, PharmD, Clinical Pharmacist · Editorial policy · Not medical advice

Last updated: 01 August 2026 · How we check our content

The four numbers and what they mean

1. Total Cholesterol: the headline number

Total cholesterol is the sum of all cholesterol types in your blood. Below 200 mg/dL is desirable. But total cholesterol alone is a poor predictor of heart risk: a person with high HDL (protective) may have a high total cholesterol but low actual risk. Always look at the individual components.

2. LDL: the number that matters most

LDL (Low-Density Lipoprotein) is the primary driver of atherosclerosis. It deposits in artery walls. The lower your LDL, the lower your heart attack risk. For healthy adults: below 100 mg/dL is optimal. For people with diabetes, high blood pressure or previous heart attack: aim below 70 mg/dL. Statins primarily work by lowering LDL.

3. HDL: higher is better

HDL (High-Density Lipoprotein) is the only cholesterol you want HIGH. It removes excess cholesterol from artery walls. Men need above 40 mg/dL, women above 50 mg/dL. Above 60 mg/dL is protective against heart disease. Raised by: exercise, weight loss, quitting smoking, moderate alcohol (in those who already drink), and niacin supplements.

4. Triglycerides: the sugar-fat connection

Triglycerides are fats stored from excess calories, especially from sugar, refined carbs and alcohol. Normal is below 150 mg/dL. Above 500 mg/dL is dangerous (pancreatitis risk). The best way to lower triglycerides is to cut sugar and refined carbohydrates: more effective than cutting fat.

The ratio that matters: Total Cholesterol ÷ HDL

Ratio	Risk Level
Below 3.5	Low risk
3.5 – 5.0	Moderate risk
Above 5.0	High risk

How often should you check cholesterol?

Adults 20–39 with no risk factors: every 4–6 years
Adults 40+ or with diabetes/hypertension/obesity: every 1–2 years
People on statins: every 3–6 months until stable, then yearly
Anyone with a family history of early heart disease: start screening at age 20

Foods that lower LDL cholesterol

Oats and oat bran: soluble fibre binds cholesterol
Beans and lentils: soluble fibre + plant protein replaces meat
Nuts (walnuts, almonds): unsaturated fats lower LDL
Fatty fish: omega-3 lowers triglycerides
Fruits rich in pectin: apples, citrus, strawberries
Olive oil: replaces saturated fats in cooking

References

Sources cited on this page. PubMed links open the original abstract.

Grundy SM, Stone NJ, Bailey AL, et al. 2018 AHA/ACC/AACVPR/AAPA/ABC/ACPM/ADA/AGS/APhA/ASPC/NLA/PCNA guideline on the management of blood cholesterol. J Am Coll Cardiol. 2019;73(24):e285–e350. PMID 30423393 · doi:10.1016/j.jacc.2018.11.003

LDL, HDL, triglycerides, and non-HDL – what each number means

A standard lipid panel measures four values, and each provides different information about cardiovascular risk:

LDL cholesterol (low-density lipoprotein): The primary target of cholesterol-lowering therapy. LDL particles can penetrate arterial walls and become oxidised, initiating atherosclerosis (plaque formation). The lower the LDL, the lower the risk. NICE guidelines target LDL below 2.0 mmol/L for people with established cardiovascular disease, or below 3.0 mmol/L for primary prevention.
HDL cholesterol (high-density lipoprotein): Often called "good cholesterol" because HDL particles transport cholesterol from arterial walls back to the liver for disposal (reverse cholesterol transport). A low HDL (below 1.0 mmol/L in men, below 1.2 mmol/L in women) is an independent risk factor for heart disease. Exercise, stopping smoking, and moderate alcohol reduction are the main lifestyle strategies for raising HDL.
Triglycerides: Fats carried in the blood after meals and released from fat stores. Elevated fasting triglycerides (above 1.7 mmol/L) indicate insulin resistance, metabolic syndrome, type 2 diabetes risk, and contribute to cardiovascular risk independently of LDL. Very high triglycerides (above 10 mmol/L) risk acute pancreatitis and require urgent treatment with fibrates and strict dietary fat restriction.
Non-HDL cholesterol: Total cholesterol minus HDL. This captures LDL plus VLDL (very low-density lipoprotein) – all atherogenic particles together. Non-HDL is more accurate than LDL alone when triglycerides are elevated (which distorts the standard LDL calculation). Target: below 2.6 mmol/L in high-risk patients.

How statins work – and what the evidence actually shows

Statins (atorvastatin, rosuvastatin, simvastatin, pravastatin) work by inhibiting HMG-CoA reductase, the rate-limiting enzyme in cholesterol synthesis in the liver. Reduced liver cholesterol production causes liver cells to upregulate their LDL receptors, pulling more LDL out of the bloodstream. The result: LDL falls by 30–55% depending on dose and statin potency.

The evidence base for statins is one of the strongest in medicine: meta-analyses of over 170,000 patients demonstrate that each 1 mmol/L reduction in LDL reduces major cardiovascular events (heart attack, stroke, cardiovascular death) by approximately 22% – a risk reduction that compounds with treatment duration and is consistent regardless of baseline cholesterol level.

Common concerns addressed by evidence:

Muscle aches (myalgia): Occur in 5–10% of patients in observational studies, but in randomised placebo-controlled trials the rate is only marginally higher than placebo – suggesting a significant nocebo effect (expecting side effects causes them). True statin myopathy with elevated CK is uncommon; rhabdomyolysis (muscle breakdown with kidney injury) is rare (approximately 1 in 10,000 patient-years).
Diabetes risk: Statins mildly increase the risk of new-onset type 2 diabetes (approximately 1 extra case per 200 patients treated over 5 years). This is far outweighed by cardiovascular benefit in high-risk patients, but suggests annual HbA1c monitoring in those with pre-diabetes.
Liver toxicity: Mild transaminase rises are common but rarely progress. Routine LFT monitoring is no longer recommended by NICE in patients on statins.

10-year cardiovascular risk and who benefits from treatment

Cholesterol numbers alone do not determine who should be treated. UK clinicians use QRISK3 (an online risk calculator) to estimate the 10-year probability of a heart attack or stroke based on age, sex, cholesterol, blood pressure, smoking status, diabetes, family history, ethnicity, and other factors. NICE recommends offering statin therapy to anyone with a 10-year cardiovascular risk of 10% or more (using atorvastatin 20 mg, which is generic and low cost). People with established cardiovascular disease (previous heart attack, stroke, or angina) are treated regardless of their baseline cholesterol – the benefit is proven even when cholesterol is "normal".