High cholesterol is a silent condition that produces no physical symptoms until vascular damage (such as plaque buildup in arteries) leads to angina, heart attack, or stroke. Factors like genetics (Familial Hypercholesterolemia), metabolic health, age, and dietary habits dictate lipid levels. Adults over 20 should receive baseline lipid screening at least once every 3 to 5 years, with more frequent testing for those with cardiometabolic risk factors.
The Myth of “Feeling” High Cholesterol
Unlike high blood pressure, which occasionally manifests as headaches or dizziness when severe, hyperlipidemia exerts silent damage on arterial walls over decades. Macrophages absorb oxidized LDL particles in artery walls, forming fatty streaks that gradually harden into atherosclerotic plaques.
Unpacking the Numbers: What Your Lipid Panel Means
- Total Cholesterol: Ideal level is generally under ().
- LDL Cholesterol (“Bad”): Target depends on individual risk profile; () for low-risk, () or lower for high-risk individuals.
- HDL Cholesterol (“Good”): Higher is generally protective; () for men, () for women.
- Triglycerides: Fasting level should ideally be ().
Why Lean and Fit Individuals Can Still Have High Cholesterol
Genetics play a critical role in lipid metabolism. Conditions like Familial Hypercholesterolemia (FH) impair the liver’s ability to clear LDL from the bloodstream, leading to dangerously high cholesterol levels regardless of body weight, diet, or exercise habits.
Frequently Asked Questions (FAQs)
Q: Do I need to fast before my cholesterol blood test?
A: While traditional lipid panels required a 9–12 hour fast, modern clinical guidelines allow for non-fasting lipid panels for routine screening. However, if your doctor is specifically evaluating severe triglyceride elevation, a fasting test may be requested.
Q: What is the difference between ApoB and standard LDL-C?
A: LDL-C measures the total concentration of cholesterol contained in LDL particles, whereas Apolipoprotein B (ApoB) measures the exact number of circulating atherogenic particles, offering a more precise marker of cardiovascular risk.
Get Screened Today: Schedule your annual health check-up and lipid panel at a My Doctor clinic near you.