Family History of Heart Disease: What to Check Now

If a parent or sibling had a heart attack, a stent or a bypass before 55 for men or 65 for women, your own risk is higher than the standard calculators suggest. They do not know that your father had a heart attack at 52. Family history is one of the strongest signals we have, and it is also the one most often met with "we'll keep an eye on it." Here is what to actually check.

The blood work: Lp(a) and ApoB

Lipoprotein(a) is a cholesterol particle whose level is set almost entirely by genetics. Roughly one in five people carry a high level, and it runs in families. It raises risk on its own, independent of LDL, because the particle is both more prone to lodge in the artery wall and more prone to promote clotting. Diet and exercise barely move it. Because the level is stable for life, it needs to be measured once. Most people with a family history have never had it drawn.

A standard lipid panel reports LDL cholesterol, which is the amount of cholesterol being carried, not the number of particles carrying it. ApoB counts the particles. The more particles traveling through the arteries, the greater the chance one gets stuck to the wall. The guideline line for most adults is an ApoB under 100. For members we treat with a strong family history, we aim under 60. Adding ApoB and ApoA1 to a panel runs about $30 cash.

Blood pressure and a calcium score

High blood pressure does its damage quietly over decades, and a reading in a clinic chair after a drive and a wait is a poor measure of it. A week of home readings, morning and evening, seated and rested, tells us what the arteries actually live with. Anything averaging above 130 over 80 earns attention when heart disease runs in the family.

A coronary artery calcium score is a quick CT scan of the heart that counts hardened plaque in the arteries. It measures disease that is already there. For a 45 year old with a strong family history and a borderline lipid panel, a score above zero changes the conversation entirely, and a zero is reassuring but does not by itself rule out treatment. It costs roughly $100 to $150 cash at most imaging centers and takes about ten minutes. Younger people, say under 40, often have soft plaque that has not calcified yet, so a zero means less in them.

Not waiting

Plaque builds for twenty or thirty years before it causes trouble, and for a good share of people the first symptom of heart disease is the heart attack itself. Waiting for a warning is not a plan. The checks above are a few vials of blood, a cuff and a ten minute scan, and they tell you where you stand decades early.

That's why we check it, and we check it early when the family history is there.

This article is educational and is not medical advice.

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