High cholesterol is a risk factor for heart disease, and it affects how cholesterol moves through the bloodstream. Cholesterol is a fat-like substance that moves through the bloodstream inside lipoproteins. The liver produces the cholesterol the body needs, yet excess levels build up over time, and this buildup damages the arteries when left unmanaged.
Understanding High Cholesterol Levels
Cholesterol travels through the blood in two forms. High-density lipoproteins, or HDL, and low-density lipoproteins, or LDL. A healthy total cholesterol reading falls under 200, and an LDL reading under 100 sits within the healthy range. Borderline high cholesterol ranges from 200 to 239; a high reading is 240 or above, and these numbers guide how clinicians classify the condition. About 98.9 million American adults have borderline high cholesterol, and 31.9 million of those adults have high cholesterol, so the condition affects a wide portion of the population.
LDL levels also have their own ranges. An LDL reading below 100 is considered healthy, while readings from 130 to 159 fall into the borderline-high range. Readings of 160 or above are high, and these levels help clinicians assess cholesterol-related risk.
Excess LDL cholesterol accumulates on the inner walls of the arteries. This buildup forms plaque, and plaque narrows the arteries or blocks them completely. When blood cannot reach the heart, the result may be a heart attack, a stroke, or heart failure. The process develops quietly, and a person feels no symptoms until damage occurs, which is why regular screening supports early detection.
Recognizing Key Risk Factors
Several conditions raise the likelihood of developing heart disease. High blood pressure, diabetes, and obesity each contribute, while smoking and a family history of heart disease add further risk. Metabolic syndrome and chronic kidney disease also increase the chances. A person carrying more than one of these factors faces a higher combined risk, and some factors respond to lifestyle changes even when others cannot be controlled.
Diet directly affects cholesterol levels, and two types of fat drive the numbers up. Trans fats raise LDL and lower HDL, and the Food and Drug Administration banned partially hydrogenated oils from food in 2018, removing a major dietary source. Saturated fats also raise LDL, and foods such as red meat, dairy products, and fried foods supply saturated fat, so reducing these foods lowers saturated fat intake.
Diagnosing and Treating High Cholesterol
Diagnosis begins with a blood test called a lipoprotein panel. A cardiologist reviews the results, checks heart function, and measures blood pressure to determine whether cholesterol is connected to another medical concern. Lifestyle changes can sometimes lower cholesterol without medication; these include limiting saturated fat, exercising regularly, quitting smoking, and losing weight when needed.
When lifestyle changes fall short, medication becomes the next step. Prescribed options include statins, PCSK9 inhibitors, bile acid sequestrants, ezetimibe, fibrates, lomitapide, mipomersen, and niacin. If medication proves insufficient and a patient has coronary artery disease or peripheral arterial disease, a cardiologist may recommend atherectomy surgery to remove plaque from the arteries. Each treatment targets a specific stage of the condition, and the choice depends on the severity of the buildup.
Schedule Your Cholesterol Screening Today
High cholesterol responds to treatment, and early action reduces the threat to heart health. Annual checkups support timely diagnosis, and they carry added weight for anyone with a family history of heart disease. A lipoprotein panel reveals the numbers, a cardiologist interprets them, and a treatment plan follows from that evaluation. Schedule an appointment with a cardiologist to review your cholesterol levels and discuss appropriate treatment.
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