Understanding Your Lipid Profile: What the Cholesterol Numbers Mean

A lipid profile is one of the most commonly ordered blood tests, and one of the most commonly misunderstood. Patients often ask me, "Is my cholesterol normal?" The more useful question is, "Is my cholesterol right for my level of risk?"

The Numbers on Your Report

• LDL cholesterol — often called "bad" cholesterol. It contributes to plaque in the arteries and is the main number doctors use to guide treatment.
• HDL cholesterol — the "good" cholesterol. Higher levels are generally associated with lower heart risk.
• Triglycerides — a type of fat that rises with excess sugar, refined carbohydrates, alcohol and uncontrolled diabetes.
• Total cholesterol — the overall figure; useful, but less informative on its own than LDL.
• Non-HDL cholesterol — total minus HDL; a helpful marker, especially when triglycerides are high.

Why There Is No Single "Normal" Value

The reference range printed on a lab report is a general guide. Your doctor's target depends on your overall cardiovascular risk, which takes into account:

• Age and sex
• Diabetes, high blood pressure or kidney disease
• Smoking or tobacco use
• Family history of early heart attack or stroke
• Any previous heart attack, stent or stroke

Someone with diabetes or a previous heart problem usually needs a considerably lower LDL target than a healthy young adult. South Asians also tend to develop heart disease at a younger age, which is why it is worth checking a lipid profile from early adulthood.

Lifestyle Comes First — But Is Not Always Enough

• Reduce fried foods, vanaspati and bakery items, and keep portions of ghee and oil modest.
• Add fibre: whole grains, dals, vegetables, fruits and oats.
• Stay active and maintain a healthy waist size.
• Stop smoking and limit alcohol.

When risk is high, or when lifestyle changes do not bring numbers to target, medicines such as statins may be recommended. These are well studied, and the decision to start one is made together with you after weighing benefits and side effects.

How Often Should You Check?

Adults should generally have a baseline lipid profile and repeat it periodically — more often if you have diabetes, high blood pressure, a strong family history, or are on treatment. Your doctor will suggest the right interval for you.

This article is for general information and awareness only. It is not a substitute for a consultation, diagnosis or treatment by a qualified doctor. Please do not start, stop or change any medicine without medical advice. In an emergency, call 112 or go to the nearest hospital.