Cholesterol & Lipid Profile Explained
Based on ACC/AHA and ICMR cardiovascular guidelines
Educational content only. This information is for general awareness and does not constitute medical advice. Please consult a qualified healthcare provider for any medical concerns or before making health decisions.
What is Cholesterol?
Cholesterol is a fatty, waxy substance found in every cell of the body. It plays essential roles in producing hormones, vitamin D, and bile acids that aid digestion. The body produces cholesterol naturally, and it is also obtained through diet.
Cholesterol travels through the bloodstream in particles called lipoproteins. The two main types — LDL and HDL — behave very differently, which is why a lipid panel measures them separately alongside total cholesterol and triglycerides.
Elevated cholesterol typically causes no symptoms, making regular screening the only reliable way to detect abnormal levels before they contribute to cardiovascular disease.
Components of a Lipid Profile
A standard lipid profile measures five key values:
Total Cholesterol:: The sum of all cholesterol in the blood. Desirable levels are generally below 200 mg/dL.
LDL (Low-Density Lipoprotein):: Often called 'bad' cholesterol. High LDL levels are associated with plaque build-up in arteries. Optimal levels are typically below 100 mg/dL.
HDL (High-Density Lipoprotein):: Often called 'good' cholesterol. HDL helps remove LDL from the arteries. Higher values (above 60 mg/dL) are generally favourable.
Triglycerides:: A type of fat stored in the body. Elevated triglycerides (above 150 mg/dL) may be associated with cardiovascular risk, particularly when combined with low HDL.
VLDL (Very Low-Density Lipoprotein):: Carries triglycerides in the blood. Usually calculated from the triglyceride value.
Results must be interpreted in the context of individual health history by a qualified clinician.
Who Should Get a Lipid Profile?
Lipid testing is recommended for:
• Adults aged 20 and above as a baseline
• Individuals with a family history of heart disease or high cholesterol
• People who smoke, have hypertension, or are overweight
• Those with diabetes, as they have a higher cardiovascular risk
• Anyone prescribed cholesterol-lowering medication, to monitor response
For most healthy adults without risk factors, testing every 4–6 years is commonly suggested. People with elevated risk may benefit from more frequent monitoring.
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