CARDIOLOGY INSIGHTS
It Runs in the Family
Know What You Inherit. Shape What Comes Next.
SONAL CHANDRA, MD
You are sitting across from me in the exam room, telling me about your father and his heart attack at fifty-three, the bypass surgery, the way your family came to treat his condition as an inevitable fact of life. Now you are in your forties, and you want to know: am I next?
It is the most important question I hear. And the answer is this: your family history is real, valuable, actionable information — but it is not a verdict.
What Can Be Inherited
Familial Hypercholesterolemia and Lipid Disorders
Familial hypercholesterolemia (FH) is caused by mutations in the genes responsible for clearing LDL cholesterol from the bloodstream, resulting in levels two to three times above normal from birth. It affects roughly one in 250 people and remains dramatically undertreated in part due to many patients remaining un- diagnosed. If your LDL is persistently elevated despite careful diet and your family has a history of early heart disease, FH belongs in the conversation.
Lipoprotein(a) — The Overlooked Risk Factor
Lp(a) is up to 90% genetically determined, essentially unaffected by diet or standard lipid medications, and an independent risk factor for both coronary disease and ischemic stroke. It is present at elevated levels in roughly 20% of the population, yet most people have never had it measured. Targeted therapies are now in late-stage trials; knowing your number today means you and your physician can calibrate your risk more precisely and act accordingly.
Cardiometabolic Predispositions
Some individuals inherit a biological architecture that predisposes them toward insulin resistance, hypertension, and metabolic syndrome (conditions that converge powerfully on cardiovascular risk). Polygenic risk scores can now identify people at the upper end of this spectrum years before clinical disease appears. This is not determinism. It is foresight.
What We Learn From Our Families Beyond Genetics
Alongside true genetic inheritance runs a second kind: the inheritance of habit. Diet, physical activity, stress patterns, sleep, and smoking behavior are all transmitted within families as a result of childhood imprinting and they are quite modifiable. Recognizing that many of these patterns were taught rather than fated is itself a form of liberation.
Epigenetics: The Biology of Choice
Epigenetics refers to changes in how genes are expressed. These changes are driven not by alterations in DNA itself, but by behavioral and environmental influences. Diet, exercise, sleep, and chronic stress all modify epigenetic marks on your genes. Compellingly, some of these modifications appear heritable. The choices you make today may influence the biological starting point of your children. Breaking a family pattern of disease does not merely protect you, it may alter the trajectory of the generations that follow.
A genetic predisposition is not a diagnosis: It is an invitation to act.
The tools available today are categorically different from those of a generation ago. Coronary artery calcium (CAC) scoring detects and quantifies atherosclerosis before symptoms appear.
PCSK9 inhibitors and newer lipid-lowering agents can reduce LDL to historically unprecedented levels. Mediterranean-pattern eating, structured exercise, and stress and sleep management don't merely slow cardiovascular disease; rather in some cases, they begin to reverse it.
Your parents faced their risk factors with the tools of their era. You face yours with ours.
Heart Disease and Stroke: One Arterial Story
Coronary artery disease and ischemic stroke are not separate diseases: they are expressions of the same underlying biology. Atherosclerosis driven by elevated lipids, hypertension, inflammation, and metabolic dysfunction affects arteries throughout the body.
If your family history includes stroke on one side and heart disease on the other, these histories belong in the same conversation. Comprehensive cardiovascular risk management means treating the arterial system as a whole.
Risk Awareness, Not Living in Fear
Approach family history as a blueprint and not as your fate. Biological history shows where risk tends to concentrate, where the “load” may be higher, and where small vulnerabilities can quietly compound over time. But a blueprint is not a prophecy; it’s information. The most meaningful way to use what you’ve inherited is not anxiety rather clarity and action.
With the right evaluation, you can identify risks earlier, quantify them more accurately, and intervene in ways that are targeted, trackable, and sustainable. The science is on your side, and prevention has never been more personal, more measurable, or more effective. There has never been a better time to change your trajectory and to write a healthier chapter for the people who come after you.
The conversation about your heart starts with knowing your story.