Cholesterol and Heart Health: Understanding Your Numbers

Cholesterol is often described as something harmful, but the truth is more complicated. Your body needs cholesterol for important functions, including building cells and producing certain hormones. The problem occurs when certain cholesterol levels become unhealthy and contribute to plaque buildup in the arteries.

Understanding cholesterol, knowing your numbers, and discussing your cardiovascular risk with a healthcare professional can help you take appropriate steps to protect your heart.

What Is Cholesterol?

Cholesterol is a waxy substance that travels through the bloodstream. Your body produces the cholesterol it needs, and some also comes from foods.

Because cholesterol does not dissolve directly in blood, it is transported through the body by particles called lipoproteins.

Two commonly discussed types are LDL and HDL cholesterol.

LDL Cholesterol

Low-density lipoprotein, or LDL, is often called “bad” cholesterol. Higher levels of LDL can contribute to plaque buildup in arteries.

Over time, plaque can narrow or block blood vessels and increase the risk of cardiovascular problems, including heart attack and stroke.

HDL Cholesterol

High-density lipoprotein, or HDL, is commonly called “good” cholesterol because it is involved in transporting cholesterol away from the arteries.

However, cholesterol risk is not determined by HDL alone. Healthcare professionals consider the complete cardiovascular picture rather than focusing on a single number.

Triglycerides

Triglycerides are another type of fat found in the blood. Elevated triglycerides can also be associated with increased cardiovascular risk, particularly when combined with other metabolic risk factors.

Why Does Cholesterol Matter to Your Heart?

When cholesterol levels are unhealthy, cholesterol-containing particles can contribute to plaque formation inside arteries.

As plaque accumulates, arteries can become narrower. If a plaque ruptures and a blood clot forms, blood flow can become blocked. Depending on where the blockage occurs, this can contribute to a heart attack or stroke.

The good news is that cholesterol is one of the cardiovascular risk factors that can often be managed.

Who Should Have Cholesterol Checked?

The appropriate timing and frequency of cholesterol testing depends on age, medical history, family history, risk factors, and previous results.

Regular testing can help identify unhealthy cholesterol levels before symptoms occur. The American Heart Association notes that for many adults, cholesterol screening every five years beginning at age 19 can be reasonable, while individual circumstances may require a different schedule.

People with diabetes, cardiovascular disease, a strong family history, or other risk factors may need more frequent assessment.

How Can You Improve Your Cholesterol?

Choose Heart-Healthy Foods

A heart-supportive eating pattern can include:

• Vegetables and fruits
• Whole grains
• Beans and legumes
• Nuts and seeds
• Lean proteins
• Healthier unsaturated fats

It is also helpful to limit foods that are high in saturated fat, added sugar, sodium, and highly processed ingredients.

Stay Active

Regular physical activity can support cardiovascular health and contribute to healthier cholesterol levels.

The best activity is often one you can perform consistently. Walking, cycling, swimming, dancing, and other enjoyable activities can become part of a sustainable routine.

If you have known heart disease or symptoms during exercise, ask your healthcare professional what level of activity is appropriate.

Avoid Smoking

Smoking and tobacco exposure can negatively affect cardiovascular health and interact with other risk factors.

If you smoke, quitting is one of the most valuable steps you can take to improve your overall heart health.

Maintain a Healthy Weight

Maintaining a healthy weight can support cholesterol management and reduce cardiovascular risk.

Rather than relying on short-term diets, focus on sustainable eating habits, regular physical activity, adequate sleep, and professional guidance when needed.

Do You Always Need Cholesterol Medication?

Not everyone with elevated cholesterol will have the same treatment plan.

The decision to use medication depends on the individual’s overall cardiovascular risk, cholesterol levels, medical history, age, family history, and other factors.

Lifestyle changes are an important part of cardiovascular prevention. However, some people may need cholesterol-lowering medication to reduce their risk. The 2026 American Heart Association guidance emphasizes assessing cardiovascular risk comprehensively and using individualized treatment decisions.

Never start, stop, or change cholesterol medication without discussing it with your healthcare professional.

Can High Cholesterol Cause Symptoms?

High cholesterol itself usually does not produce obvious symptoms. A person may feel completely healthy while having an unhealthy cholesterol level.

This is why testing is important.

Knowing your cholesterol numbers gives you and your healthcare professional information that can be used alongside other factors to understand your cardiovascular risk.

When Should You See a Cardiologist?

A cardiology consultation may be appropriate if you have high cholesterol combined with other cardiovascular risk factors, a family history of premature heart disease, known heart disease, chest symptoms, or concerns about your overall cardiovascular risk.

A cardiologist can review your medical history, laboratory results, lifestyle factors, and other risk factors to help determine the most appropriate approach.

Final Thoughts

Cholesterol is not simply “good” or “bad.” Your body needs cholesterol, but unhealthy levels—particularly elevated LDL cholesterol—can contribute to plaque buildup and cardiovascular disease.

The best approach is to understand your numbers rather than focusing on a single result. Healthy eating, physical activity, avoiding tobacco, maintaining a healthy weight, managing blood pressure and diabetes, and following an appropriate treatment plan can all support better heart health.

If you are concerned about your cholesterol or cardiovascular risk, speak with a qualified cardiologist to develop a personalized plan for protecting your heart.