Heart disease is the leading cause of death in the United States, yet many of the factors that increase risk often go unnoticed. While most people are familiar with well-known risk factors such as smoking, high cholesterol and excess weight, other important risks may not cause symptoms and can go undetected for years.
Many heart disease risk factors can be detected through screening before they cause noticeable symptoms. In this article, you’ll learn:
- 10 hidden risk factors that may increase your risk of heart disease
- Why these often-overlooked factors matter for your heart health
- When to talk to your doctor about screening and prevention
Understanding your risk factors can help you take steps to protect your cardiovascular health.
Why Does Knowing Your Heart Disease Risk Matter?
Heart disease often develops silently over many years. Left unaddressed, these factors may increase the risk of coronary artery disease, heart failure, abnormal heart rhythms and other cardiovascular conditions.
By the time symptoms appear, significant damage may already be present. Knowing your risk factors allows you and your doctor to focus on prevention rather than waiting for a problem to develop. This may include:
- Lifestyle changes
- Monitoring blood pressure, cholesterol and other health markers
- Treating conditions that increase cardiovascular risk
- Developing a personalized prevention plan
10 Hidden Risk Factors for Heart Disease
1. A Family History of Early Heart Disease
Heart disease can run in families. If a parent, sibling or other close relative developed heart disease at a young age — before 55 in men or before 65 in women — your own risk may be higher than average.
Genetics can influence:
- Cholesterol levels
- Blood pressure
- How the body processes fats
A strong family history doesn’t mean heart disease is inevitable, but it does mean earlier and more regular screening may be worthwhile.
2. High Lipoprotein(a) [Lp(a)] Levels
Lipoprotein(a), usually shortened to Lp(a), is a genetically determined lipoprotein particle that carries cholesterol in the blood. Elevated Lp(a) can significantly increase the risk of heart attack and stroke, even in people who otherwise have normal cholesterol levels and appear healthy.
Because Lp(a) is not included in a standard cholesterol panel, many people do not know their levels are elevated. Testing may be especially important for people with a family history of early heart disease or those who have experienced a heart attack or stroke despite normal cholesterol levels.
Knowing your Lp(a) level can help you and your doctor better understand your overall cardiovascular risk and decide whether additional prevention steps are needed.
3. Sleep Apnea and Poor Sleep Quality
Obstructive sleep apnea (OSA) causes repeated pauses in breathing during sleep, sometimes dozens of times per hour. These pauses lower oxygen levels and place repeated stress on the cardiovascular system.
OSA has also been linked to many serious cardiovascular problems, including coronary artery disease, heart attack and stroke, and abnormal heart rhythms like AFib, according to the American College of Cardiology.
Common signs of sleep apnea include:
- Loud snoring
- Waking up gasping for air
- Daytime fatigue or difficulty concentrating
- Morning headaches
- Restless or unrefreshing sleep
If these signs sound familiar, speak with your doctor about whether a sleep study is appropriate.
Sleep apnea gets a lot of attention, but poor sleep quality in general is its own cardiovascular risk factor. Consistently sleeping fewer than seven hours per night has been linked to higher blood pressure, increased inflammation and a greater risk of heart attack and stroke.
Prioritizing sleep is a genuine form of heart disease prevention. Aim for seven to nine hours of quality sleep per night.
4. Prediabetes and Insulin Resistance
Prediabetes means blood sugar levels are higher than normal but not yet high enough to be classified as type 2 diabetes. Over time, elevated blood sugar can damage blood vessels and nerves, raising the risk of heart disease significantly.
Prediabetes typically produces no symptoms. A simple fasting blood sugar test or hemoglobin A1C test can identify it and lifestyle changes and/or medication can help improve levels.
5. Chronic Stress
Long-term stress affects the heart in ways that go beyond feeling overwhelmed. Chronic stress can raise blood pressure, increase inflammation and contribute to unhealthy habits — all of which are linked to higher cardiovascular risk.
The connection between mental health and heart health is well established. Managing stress through regular exercise, sufficient sleep and mental health support is genuinely protective for the heart.
6. Sitting Too Much
Prolonged sedentary behavior, such as sitting for hours at a desk, in a car or on a couch, is associated with higher rates of heart disease independent of exercise habits.
Simple strategies to break up your day can include:
- Standing or walking while taking phone calls
- Taking a short walk during lunch
- Setting a reminder to stand or stretch every hour
7. Autoimmune and Inflammatory Conditions
Conditions like rheumatoid arthritis, lupus and inflammatory bowel disease involve chronic inflammation, which doesn’t stay contained to joints or skin. Persistent inflammation can affect blood vessel walls, making them more prone to plaque buildup and narrowing.
People living with these conditions face a higher baseline risk of cardiovascular problems. Regular heart health monitoring is an important part of managing autoimmune diseases.
8. Pregnancy-Related Complications
Pregnancy complications such as preeclampsia, gestational high blood pressure and gestational diabetes can increase a woman’s risk of heart disease and stroke later in life. If you’ve experienced any of these conditions, be sure to tell your doctor, as this information can help guide long-term cardiovascular screening and prevention.
9. Menopause and Heart Disease
Menopause itself doesn’t cause heart disease, but the transition marks a turning point in cardiovascular risk for women. As estrogen levels decline, cholesterol, blood pressure and body fat distribution can change in ways that increase cardiovascular risk.
According to the American Heart Association, a woman’s risk for heart disease and stroke increases at and around menopause. Healthy habits like regular exercise, a heart-healthy diet, not smoking and routine medical checkups become especially important during midlife.
10. Eating Ultra-Processed Foods
Ultra-processed foods — such as packaged snacks, sugary drinks, processed meats and many ready-to-eat meals — are made with industrial ingredients, added sugars, refined starches and unhealthy fats. They also tend to be low in fiber. Diets high in these foods have been linked to higher blood pressure, weight gain, inflammation and an increased risk of heart disease and stroke, even beyond what would be expected from their calorie content alone.
Fiber is an important part of heart health. Fiber-rich foods help lower cholesterol, steady blood sugar and support a healthy weight. Shifting toward whole and minimally processed foods — such as vegetables, fruits, whole grains, beans, nuts and legumes — adds heart-protective fiber and is one of the most effective ways to protect your heart.
When Should You Consider Heart Disease Screening?
Screening recommendations vary based on your risk factors. Talk to your doctor if you:
- Have a family history of early heart disease
- Have been diagnosed with high blood pressure, high cholesterol or diabetes
- Are going through or have completed menopause
- Have a history of pregnancy complications
- Live with an autoimmune condition
- Have experienced unexplained fatigue, shortness of breath or chest discomfort
Be sure to ask your doctor about:
- Cholesterol panel (including LDL, HDL and triglycerides)
- Lp(a) blood test (especially with family history of heart disease)
- Blood pressure monitoring
- Fasting blood sugar or A1C test (to screen for prediabetes)
- Sleep apnea evaluation (if you snore or feel tired during the day)
- Cardiac risk assessment
Frequently Asked Questions
What are some lesser-known risk factors for heart disease?
Some heart disease risk factors are easy to miss because they often cause no symptoms or are not routinely discussed. These include high lipoprotein(a) [Lp(a)] levels, sleep apnea, prediabetes, chronic stress, autoimmune conditions, menopause, pregnancy-related complications, eating ultra-processed foods and a family history of early heart disease.
What is lipoprotein(a) and why does it matter for heart health?
Lipoprotein(a), or Lp(a), is an inherited cholesterol particle. High levels can increase the risk of heart attack and stroke, even when standard cholesterol levels appear normal. A simple blood test can measure Lp(a), but it is not included in a routine cholesterol panel.
Can sleep apnea increase the risk of heart disease?
Yes. Untreated sleep apnea can increase blood pressure and place extra strain on the heart. Over time, it may raise the risk of heart disease, heart attack and stroke.
Is heart disease hereditary?
Yes. A family history of early heart disease can increase your risk. Genetics can influence cholesterol levels, blood pressure and other factors that affect cardiovascular health.
When should I get screened for heart disease?
Talk with your doctor about screening if you have risk factors such as high blood pressure, high cholesterol, diabetes, a family history of heart disease, pregnancy complications or autoimmune disease.
Protecting Your Heart Starts with Knowing Your Risk
Heart disease risk is not always obvious, and some of the most important risk factors cause no symptoms. The good news is that identifying risk early gives you and your doctor a chance to take action through lifestyle changes, monitoring and medical care. If any of these risk factors apply to you, talk with your doctor.
