The Cardiovascular Risk Factor You Inherit and Test Once

Most cardiovascular risk factors are things you accumulate. Lipoprotein(a) is one you are born with.

Lp(a) is an LDL-like particle with an additional protein, apolipoprotein(a), attached. More than 90% of the variation in a person's concentration is determined by genetic variability at the LPA locus, with a repeat polymorphism in the gene explaining somewhere between 30 and 70% of it. Diet moves it very little. Exercise moves it very little. Statins, which reshape most of a lipid panel, do not lower it.

The 2022 European Atherosclerosis Society consensus statement estimates elevated Lp(a) affects around 1.4 billion people worldwide, and describes its contribution to cardiovascular risk as persistently underappreciated. Risk rises with concentration: levels above the 75th percentile are associated with increased risk of myocardial infarction and aortic valve stenosis, with associations for heart failure, cardiovascular mortality and stroke appearing at higher percentiles. A concentration around 100 mg/dL is associated with roughly double the risk of atherosclerotic cardiovascular disease.

Population medians differ substantially by ancestry — in UK Biobank data, roughly 16 nmol/L in participants of Chinese descent, 19 in White participants, 31 in South Asian participants and 75 in Black participants — which is one reason a single population reference range is a poor guide.

The panel's practical recommendation is unusually simple: test Lp(a) at least once in adulthood. Once, because the value is essentially fixed for life. It is one of the few blood tests that does not need repeating, and one of the few that most people have never had.

Here is the honest limitation. At the time of that statement there was no approved therapy proven to reduce cardiovascular events by lowering Lp(a). Agents achieving large reductions were in development, but outcome trials had not reported. So a high result does not currently unlock a specific treatment.

What it does change is context. An elevated Lp(a) is a fixed, non-modifiable contribution to lifetime risk, which raises the value of everything that is modifiable — apoB, blood pressure, smoking status, glycaemic control. It shifts how aggressively the rest of the picture is worth managing, and that is a conversation to have with a clinician rather than a supplement to buy. No diet, exercise regimen or over-the-counter product has been shown to meaningfully lower it, and a normal result does not mean low cardiovascular risk.

Why this matters for tracking: this is the rare marker where the tracking discipline is trivial — measure it once, record it, and let it inform the interpretation of everything else you measure repeatedly. If you have a family history of early cardiac events that never made sense against otherwise unremarkable bloodwork, this is the number most likely to be missing from the file.