Lipoprotein(a) and ethnicity: why your background matters

Lipoprotein(a) levels vary between ethnic groups more than almost any other lipid measure. That has real consequences for how the test should be read — and for who should be sure not to skip it.

The pattern across populations

Across large studies the ranking is consistent. Median Lp(a) is highest in people of African ancestry, followed by South Asians, then Europeans, then Hispanic populations, with East Asian populations lowest. In the UK Biobank, Black participants had both a higher median and a noticeably wider spread of values than White participants.

Does ethnicity change the risk?

This is the nuance that matters. For a given Lp(a) level, the increase in cardiovascular risk looks broadly similar across White, Black and South Asian groups — the line relating Lp(a) to risk runs in much the same direction and slope. What differs is how common high levels are, and how much uncertainty surrounds the estimates in less-studied groups. So ethnicity changes the chance that you have a high Lp(a) far more than it changes what a high number means for you once you have it.

Why the differences exist

Almost entirely genetics. The LPA gene varies between populations — particularly the size of a region called the kringle IV type 2 repeat, plus a handful of common variants — and these differ in frequency between ancestries. Diet and lifestyle barely register by comparison.

What this means for you

• Lp(a) should be measured once in everyone — but it’s especially worth not skipping if you’re of African or South Asian ancestry, where high levels are common.
• Don’t assume your Lp(a) is fine because of your ethnicity. The spread within every group is wide; the only way to know your number is to measure it.
• The “normal” thresholds we use were largely derived in European populations. Whether they should differ by ancestry is an open research question — for now, the same cut-offs are applied to everyone.

Bottom line: ethnicity shifts how likely you are to have a high Lp(a), not what a high Lp(a) means once you’ve measured it. So measure it.

Want the detail on Lp(a) itself? Read what Lp(a) is and why it matters, or convert your result and see its risk band. This is general information, not medical advice.