Why You Should Check Your Lipoprotein(a): The Overlooked Cholesterol Marker
By Dr Daniel Gordon • 21, May 2025
True story - I’ve seen many patients who look perfectly healthy on paper—normal blood pressure, normal cholesterol levels, no glaring lifestyle risks—discover they actually face a higher chance of heart disease than they realised. The culprit? An overlooked cholesterol marker known as Lipoprotein(a), often abbreviated as Lp(a). Despite its importance, it’s rarely included in standard cholesterol tests. In this article, I’ll explain what Lipoprotein(a) is, why it matters, and how understanding this overlooked marker can help you make more informed decisions about your heart health.
1. A Quick Cholesterol Refresher
Before we dive into Lipoprotein(a), let’s start with a reminder of how regular cholesterol testing works. Most standard tests measure:
Total Cholesterol – The sum of all cholesterol in your blood.
LDL Cholesterol (“Bad” Cholesterol) – High levels are known to contribute to plaque build-up in the arteries.
HDL Cholesterol (“Good” Cholesterol) – Helps remove excess cholesterol from your bloodstream.
Over time, a high LDL level can lead to atherosclerosis: the build-up of fatty plaques inside your arteries. These plaques can obstruct blood flow or break off, potentially causing a heart attack or stroke. Now, Lipoprotein(a) is not typically included in these standard panels, yet it can carry risks above and beyond what regular LDL does.
2. What Is Lipoprotein(a)?
Think of Lipoprotein(a) as an especially “sticky” version of LDL. Scientifically, it’s an LDL-like particle that carries an additional protein which makes it more prone to causing inflammation and promoting plaque build-up. As a result, elevated Lp(a) can significantly heighten the chances of heart disease, stroke, and even valve disease—all while your usual cholesterol values might appear normal.
Why Haven’t I Heard of It?
Because standard lipid profiles focus on total cholesterol, LDL, HDL, and triglycerides, there’s often little to no mention of Lp(a). However, its role in cardiovascular risk is drawing more and more attention in medical research, leading doctors like me to check this marker more frequently—especially in patients with a family history of early heart disease or unexplained cardiovascular issues.
3. The Genetic Factor
One key detail about Lipoprotein(a) is that it’s genetically determined. While lifestyle habits such as a healthy diet and exercise can greatly influence your LDL and HDL levels, they do not lower your Lp(a). Similarly, common cholesterol-lowering drugs like statins have no direct effect on Lipoprotein(a) levels. What’s more, your Lp(a) is fairly stable throughout adult life, so a single test is often enough to reveal whether you have elevated levels.
Why Test for Something You Can’t Change?
You might wonder, “If there’s no direct way to lower Lp(a), why bother testing it at all?” The truth is, knowing your Lp(a) can still have real, actionable benefits. Let’s explore why.
4. The Real Benefits of Lp(a) Testing
4.1 Clarifying Your True Heart Risk
High Lp(a) can be a hidden risk factor. If it’s elevated, you may be more likely to develop significant plaque in your arteries, even if other markers, like LDL, appear normal. By identifying a raised Lp(a) level, you and your doctor can take a more aggressive approach in managing other cardiovascular risk factors. This might mean aiming for a lower LDL target than someone with normal Lp(a), or tightening up on blood pressure control, weight management, and other lifestyle factors.
4.2 Providing Genetic Clues
When a young individual develops heart disease without the usual risk factors—normal cholesterol, healthy blood pressure, no smoking history—Lp(a) can be the missing piece of the puzzle. If you have a personal or family history of early-onset heart disease or stroke, an elevated Lp(a) might explain why these problems appeared sooner than expected. Moreover, if your Lp(a) is high, it may be worth advising your close relatives to get tested as well, so they can intervene earlier if their levels are also raised.
4.3 Staying Ahead of Emerging Therapies
Although current medications do not directly lower Lp(a) in the same way they reduce LDL, promising new treatments are on the horizon. Ongoing research aims to develop drugs that can specifically target Lp(a) and decrease its harmful impact on blood vessels. Knowing your Lp(a) puts you in a better position to access new therapies as they become available. It also helps ensure you receive closer monitoring from healthcare professionals who are aware of your elevated risk.
5. Could You Benefit from an Lp(a) Test?
While I generally believe that everyone could gain insight from at least one Lipoprotein(a) test, there are certain individuals who stand to benefit the most:
Early Heart Disease in Yourself or Family: If you or a close family member had a heart attack, stroke, or other serious cardiovascular problem at a relatively young age, it’s worth digging deeper.
Normal LDL but Heart Disease Risk: Some people have ‘normal’ cholesterol levels yet develop significant plaque build-up. An Lp(a) check might reveal why.
Strong Family History of High Cholesterol: Even if you don’t have early heart disease in your history, multiple relatives with high cholesterol or plaque might signal a genetic trait.
6. What Happens If Your Lp(a) Is High?
Because Lp(a) itself is not currently treatable by standard medication, you’ll need a broader strategy to protect your cardiovascular health. This typically includes:
Optimising LDL Levels: Even if your LDL is ‘normal’, your target might be lowered given the added risk from high Lp(a).
Managing Blood Pressure: Keeping blood pressure in a healthy range to reduce stress on arterial walls.
Diet and Exercise: Consuming a balanced diet rich in fruits, vegetables, wholegrains, and lean proteins, coupled with regular physical activity.
Avoiding Smoking: Smoking greatly accelerates plaque formation, especially critical if you already have an elevated Lp(a).
Keeping Up to Date on Research: Stay informed about potential future drugs aimed at lowering Lp(a).
7. The Future of Lp(a) Management
Medical science is evolving quickly, and research on targeted therapies to lower Lipoprotein(a) is ongoing. Some drugs currently under investigation aim to disable or reduce the production of the apolipoprotein(a) component. Early trials show promise in substantially reducing Lp(a) levels, suggesting that in the near future, we may be able to tackle this risk factor head-on.
By knowing your Lp(a) status now, you’ll be primed to take advantage of new treatments as they become available. In the meantime, working closely with your healthcare professional to tackle other risk factors is the best way to protect your heart.
9. Final Thoughts
In the world of heart health, early detection is invaluable. Lipoprotein(a) might not be on the radar of every GP or patient yet. However, it holds crucial information about cardiovascular risk, particularly for individuals with normal cholesterol who still face unexpected heart issues. If you suspect you may have a heightened cardiovascular risk, perhaps due to personal or family history, consider discussing an Lp(a) test with your doctor. The knowledge you gain can empower you to make better-informed decisions, guiding everything from your diet and exercise routine to the intensity of your LDL-lowering treatments.
At present, the best approach involves tightening control of standard risk factors—blood pressure, LDL cholesterol, weight, and smoking cessation—while staying alert for upcoming Lp(a)-focused therapies. By taking a proactive stance now, you’re investing in a future of healthier arteries and a significantly reduced likelihood of heart disease.
Disclaimer
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