High cholesterol has no day-to-day symptoms. You can’t feel it, and in most cases you won’t notice anything wrong until it causes a serious problem like a heart attack or stroke. The only reliable way to know your cholesterol levels is a blood test called a lipid panel. That said, there are a handful of rare physical signs worth knowing about, and understanding who’s at higher risk can help you decide when to get tested.
Why High Cholesterol Has No Symptoms
Cholesterol is a waxy substance that builds up slowly inside your blood vessels over years or decades. This buildup narrows your arteries and restricts blood flow, but the process is gradual enough that your body doesn’t send pain signals or other warning signs along the way. By the time symptoms appear, they’re usually symptoms of the damage cholesterol has already caused: chest pain from a partially blocked coronary artery, or a stroke from a blockage in the brain. That’s why screening matters so much.
Rare Physical Signs to Watch For
Most people with high cholesterol look and feel completely healthy. But in cases of very high cholesterol, especially the genetic form called familial hypercholesterolemia, excess cholesterol can deposit itself in visible places on the body. These signs don’t appear in most people with elevated levels, but they’re worth recognizing.
Yellowish patches near the eyes. Called xanthelasma, these are soft, flat or slightly raised yellow bumps that appear on or near the eyelids, usually close to the nose. They’re painless and harmless on their own, but they signal that cholesterol is accumulating in the skin and may be elevated in the blood.
Bumps around joints. Cholesterol deposits can form lumps near the knees, knuckles, or elbows. A swollen or painful Achilles tendon (the tendon at the back of your lower leg) can also be a sign of cholesterol buildup in people with the genetic form of high cholesterol.
A gray-white ring in the eye. A hazy arc or full ring around the outer edge of your cornea (the clear front layer of your eye) is common and harmless in people over 60. But if you’re under 40, or if the ring appears in only one eye, it can indicate high cholesterol or high triglycerides and warrants further testing.
The Blood Test You Need
A lipid panel is a simple blood draw that measures four things: total cholesterol, LDL (“bad”) cholesterol, HDL (“good”) cholesterol, and triglycerides. You may be asked to fast for 9 to 12 hours beforehand, avoiding everything except water, though some newer tests don’t require fasting. Your doctor will tell you which applies.
Most healthy adults should have their cholesterol checked every 4 to 6 years. If you have heart disease, diabetes, or a family history of high cholesterol, you’ll need testing more often. Screening is recommended starting in childhood for people with strong genetic risk factors, and the CDC recommends that even children and adolescents have their cholesterol checked.
What Your Numbers Mean
When your results come back, here’s how to read them:
Total cholesterol below 200 mg/dL is considered normal. Between 200 and 239 is borderline high. At 240 or above, it’s high.
LDL cholesterol is the number most doctors focus on first. Below 100 mg/dL is optimal. Between 100 and 129 is near optimal. The 130 to 159 range is borderline high, 160 to 189 is high, and 190 or above is very high. An LDL above 190 in an adult (or above 160 in a child) is one of the main markers for familial hypercholesterolemia, the inherited form of high cholesterol.
HDL cholesterol works differently because higher is better. You want this number above 40 mg/dL at minimum. Levels at 60 mg/dL or above are considered protective against heart disease.
Triglycerides below 150 mg/dL are normal. Between 150 and 199 is borderline high. Levels of 200 to 499 are high, and anything above 500 is very high and raises the risk of a dangerous inflammation of the pancreas.
Why Non-HDL Cholesterol Matters
Your lab results may also include a number called non-HDL cholesterol. This is simply your total cholesterol minus your HDL. It captures all the “bad” cholesterol particles in your blood, not just LDL, and it’s increasingly considered a better predictor of cardiovascular disease risk than LDL alone.
Non-HDL cholesterol is especially useful if you have high triglycerides, obesity, metabolic syndrome, or type 2 diabetes. In these conditions, LDL alone can underestimate your risk. Even people who have lowered their LDL with medication sometimes carry “residual risk” from other harmful particles that non-HDL captures. If your doctor doesn’t mention this number, it’s worth asking about.
Risk Factors That Raise the Odds
Certain factors make high cholesterol more likely, even if you feel fine. Knowing your risk profile can help you decide whether to get tested sooner rather than later.
- Family history. If a parent or sibling was diagnosed with high cholesterol or had a heart attack at a young age, your own risk is significantly higher. Familial hypercholesterolemia affects roughly 1 in 250 people and can push LDL levels dangerously high from childhood.
- Diet high in saturated fat. Red meat, full-fat dairy, fried foods, and baked goods made with butter or shortening all raise LDL cholesterol.
- Low physical activity. Exercise raises HDL (the protective kind) and helps your body process LDL more efficiently.
- Smoking. It lowers HDL and damages blood vessel walls, making it easier for cholesterol to stick and form plaques.
- Obesity. A BMI of 30 or above is associated with higher LDL and triglycerides and lower HDL.
- Diabetes. High blood sugar damages the lining of arteries and tends to raise triglycerides while lowering HDL.
- Age. Cholesterol levels naturally rise as you get older, particularly after menopause in women.
Cholesterol Is Only Part of the Picture
Your cholesterol numbers alone don’t determine your heart disease risk. Doctors use risk calculators that combine your cholesterol levels with your age, sex, blood pressure, BMI, kidney function, smoking status, and whether you have diabetes. The American Heart Association’s PREVENT calculator can even factor in your zip code to account for social and environmental factors that influence health outcomes. Two people with identical cholesterol numbers can have very different risk profiles depending on these other variables.
This is why getting a lipid panel isn’t just about seeing whether one number is too high. It’s the starting point for a broader conversation about your cardiovascular health, one that takes your full medical picture into account before deciding whether lifestyle changes alone are enough or whether medication makes sense.