Understanding Your Cholesterol Test: What Your Blood Fats Really Mean

When your doctor says, "Your cholesterol looks fine," it’s natural to feel relieved. But what exactly does a cholesterol or blood lipid test measure—and what can you do if your results aren't as positive?

What Does a Blood Lipid Test Measure?

A blood lipid test looks at the levels of fats in your blood, mainly:

• Total cholesterol

• LDL (low-density lipoprotein) cholesterol

• HDL (high-density lipoprotein) cholesterol

• Triglycerides

These results give your doctor insight into your heart disease risk and overall metabolic health.

What Are Triglycerides?

Triglycerides are the main form of fat in your body. They're stored in fat cells and used for energy between meals.
High levels can indicate that:

• You’re consuming more energy (calories) than your body needs

• Your physical activity may be too low

What Is Cholesterol?

Cholesterol is another type of fat that plays an essential role in:

• Cell structure

• Hormone production

However, too much cholesterol in the blood—especially LDL—can lead to fatty deposits in your arteries, increasing your risk of heart attack or stroke.

• LDL (Low-Density Lipoprotein) – Often called “bad” cholesterol; high levels are linked to arterial plaque buildup.

• HDL (High-Density Lipoprotein) – The “good” cholesterol; helps remove excess cholesterol from the bloodstream.

Ideally, your LDL should be low, and your HDL should be high to protect your heart.

The Truth About Cholesterol in Food

It was once believed that eating cholesterol-rich foods like eggs increased blood cholesterol. However, research now shows dietary fats—not dietary cholesterol—have the biggest impact on blood lipid levels.

That means it’s not just about how much fat you eat, but what kinds.

Types of Fats: The Good, The Bad & The Essential

There are three main types of fats in our diet:

1. Unsaturated Fats – The Healthy Kind

These fats support heart health by helping improve cholesterol levels.

• Monounsaturated fats – Avocados, olive oil, nuts

• Polyunsaturated fats – Omega-3s (found in oily fish like tuna), flaxseeds, walnuts

2. Saturated Fats – Use Sparingly

Often found in coconut oil, cheese, butter, processed meats, and baked goods. High intake can raise LDL cholesterol.

3. Trans Fats – Avoid Where Possible

These are artificially created fats found in many packaged and deep-fried foods. They’re strongly linked to heart disease and should be minimized.

When to See a Dietitian

If you have high cholesterol, elevated triglycerides, or a family history of heart disease, it’s a great idea to speak with an Accredited Practising Dietitian.

They can help you:

• Interpret your blood test results

• Create a personalised nutrition plan

• Reduce your risk of heart disease through manageable lifestyle changes