By Dr. José V. Coba, M.D., M.P.H. · Your Doctor FL, Fort Lauderdale · July 4, 2025

5 Myths About Cardiac Diseases That Could Be Putting Your Heart at Risk

Heart disease is the leading cause of death in the United States, responsible for more than 695,000 deaths every year. Yet despite how common it is, cardiac disease remains one of the most misunderstood conditions in medicine. Dangerous myths about who gets heart disease, what causes it, and how to prevent it continue to circulate — and they cost lives.

As a physician with over 40 years of clinical experience in preventive and age management medicine, I have seen firsthand how these misconceptions lead patients to delay care, ignore warning signs, or skip screenings they genuinely need. Let’s set the record straight on five of the most common — and most dangerous — myths about heart disease.

Myth #1: Heart Disease Only Affects Older Men

The truth: Heart disease affects people of all ages and genders — and women are particularly underdiagnosed and undertreated.

While it is true that men tend to develop heart disease at a younger age than women, cardiovascular disease is actually the number one killer of women in the United States, responsible for 1 in every 5 female deaths. The problem is that heart attacks in women often present differently — with symptoms like nausea, jaw pain, fatigue, and shortness of breath rather than the classic crushing chest pain — and are therefore frequently missed or dismissed.

As for age — atherosclerosis (the buildup of plaque in the arteries that causes most heart attacks) begins developing as early as the teenage years. By the time many people reach their 30s and 40s, significant arterial disease may already be present without any symptoms whatsoever. Waiting until you are “old enough to worry about it” is a dangerous strategy.

What to do: Begin cardiovascular risk assessments in your 30s, especially if you have a family history of heart disease, high blood pressure, diabetes, or elevated cholesterol. Do not wait for symptoms — by the time symptoms appear, significant damage may already be done.

Myth #2: If My Cholesterol Numbers Look Normal, My Heart Is Fine

The truth: Standard cholesterol panels miss a significant portion of cardiac risk.

A basic lipid panel — the kind most primary care doctors order — measures total cholesterol, LDL, HDL, and triglycerides. While these numbers are useful, they tell an incomplete story. Studies consistently show that up to half of all heart attack patients have normal LDL cholesterol levels.

More advanced cardiovascular risk markers — including Lipoprotein(a), ApoB, hs-CRP (high-sensitivity C-reactive protein), homocysteine, and oxidized LDL — provide a far more accurate picture of your true cardiac risk. These markers assess inflammation, particle size, and the specific types of lipoproteins that are most likely to cause arterial damage.

Additionally, metabolic factors like insulin resistance, elevated fasting glucose, and high blood pressure all significantly increase cardiac risk — completely independent of cholesterol levels.

What to do: Ask your physician for a comprehensive cardiovascular risk panel, not just a basic lipid profile. At Your Doctor FL, we routinely include advanced inflammatory and metabolic markers as part of our preventive health evaluations.

Myth #3: Heart Disease Runs in My Family, So There’s Nothing I Can Do

The truth: Genetics load the gun, but lifestyle pulls the trigger.

Yes, family history is a significant risk factor for heart disease. If your father had a heart attack before age 55, or your mother before age 65, your risk is meaningfully elevated. But having a genetic predisposition does not mean heart disease is inevitable — it means you need to be more proactive, not more fatalistic.

The science on this is clear: lifestyle factors account for up to 80–90% of cardiovascular disease cases, even in genetically predisposed individuals. Regular physical activity, not smoking, maintaining a healthy body weight, controlling blood pressure and blood sugar, managing stress, and eating a diet rich in whole foods are all powerfully protective — even against a strong family history.

Furthermore, advanced genetic testing can now identify specific inherited risk factors — such as familial hypercholesterolemia or elevated Lipoprotein(a) — that can be addressed with targeted medical interventions well before any cardiac event occurs.

What to do: If heart disease runs in your family, that is your cue to be more aggressive about preventive care — not to give up. Early, comprehensive evaluation and proactive lifestyle medicine can dramatically reduce your risk even with a challenging family history.

Myth #4: I Exercise Regularly, So My Heart Must Be Healthy

The truth: Exercise is essential for heart health — but it is not a complete protection against cardiac disease.

Regular physical activity is one of the most powerful interventions available for reducing cardiovascular risk. It lowers blood pressure, improves lipid profiles, reduces inflammation, helps control body weight, and improves insulin sensitivity. No drug comes close to matching its breadth of benefits.

However, exercise alone cannot fully counteract the effects of poor diet, chronic stress, inadequate sleep, hormonal imbalances, or genetic risk factors. We have all heard of the marathon runner who died of a heart attack — and while these cases are rare, they illustrate an important point: fitness and cardiovascular health are related but not the same thing.

Highly active individuals can still develop dangerous levels of arterial plaque, particularly when other risk factors — such as elevated Lipoprotein(a), chronic inflammation, or insulin resistance — are present. Exercise is necessary but not sufficient on its own.

What to do: Keep exercising — but do not use physical fitness as a reason to skip your cardiac screenings. Active, fit individuals still benefit enormously from comprehensive cardiovascular risk assessments, especially as they enter their 40s and beyond.

Myth #5: A Heart Attack Always Feels Like Crushing Chest Pain

The truth: Many heart attacks present with subtle, easily dismissed symptoms — or no symptoms at all.

The dramatic Hollywood heart attack — clutching the chest, collapsing to the floor — is real, but it represents only one presentation of a cardiac event. In reality, heart attacks can manifest as:

• Unexplained fatigue or exhaustion, particularly in women
• Pain or discomfort in the jaw, neck, back, or left arm
• Nausea, indigestion, or heartburn-like sensations
• Shortness of breath without chest pain
• Lightheadedness or sudden cold sweats
• A vague sense of “something is wrong” — sometimes called a feeling of impending doom

Even more concerning is the “silent heart attack” — a myocardial infarction that occurs with no perceptible symptoms at all. Silent heart attacks account for roughly 45% of all heart attacks and are often only discovered later during a routine EKG. They are particularly common in people with diabetes, who may have reduced pain sensation due to neuropathy.

What to do: Never dismiss unusual symptoms that feel out of the ordinary, even if they do not match the classic heart attack description. When in doubt, seek medical evaluation immediately. And make regular cardiac screening a non-negotiable part of your preventive health routine.

The Bottom Line: Prevention Is the Most Powerful Cardiac Medicine

Heart disease does not have to be inevitable — for you or for your family. The most powerful weapon against cardiac disease is early, comprehensive evaluation combined with proactive lifestyle and medical intervention. Waiting for symptoms is waiting too long.

At Your Doctor FL in Fort Lauderdale, we offer advanced cardiovascular risk assessment as part of our preventive medicine program. Dr. Coba evaluates not just your basic numbers but the full spectrum of metabolic, hormonal, inflammatory, and genetic factors that influence your heart health — and works with you to build a personalized plan for long-term cardiovascular wellness.