High cholesterol: which numbers matter and what actually moves them
Last updated September 3, 2026.
High cholesterol causes no symptoms at all, so a blood test is the only way to find it. Cholesterol itself is not poison; your body makes it and needs it. The problem is too much LDL cholesterol circulating for too long, depositing into artery walls and building the plaques that later cause heart attacks and strokes. The fix is measured in numbers, and the numbers are knowable.
Which numbers actually matter?
The lipid panel has four main figures. LDL ("bad") cholesterol is the driver: under 100 mg/dL is optimal for most adults, and under 70 is the target after a heart attack or in very high risk. HDL ("good") cholesterol above 40 (men) or 50 (women) is protective, but raising it with drugs has never reduced events, so it is a marker, not a target. Triglycerides should be under 150 mg/dL; levels over 500 carry a pancreatitis risk of their own. Total cholesterol matters less than the parts. Decisions come from the whole risk picture: age, blood pressure, smoking, diabetes, and family history of early heart disease, often combined into a 10-year risk score.
How is it found?
A standard lipid panel is a blood draw; fasting for 9 to 12 hours used to be mandatory, but non-fasting panels are now accepted for routine screening since LDL changes little. Adults should be screened from age 20, every 4 to 6 years if normal, more often with risk factors. A family history of very high cholesterol (LDL over 190) or heart attacks in men under 55 or women under 65 raises the possibility of familial hypercholesterolemia, an inherited condition affecting about 1 in 250 people that needs early, aggressive treatment and screening of close relatives.
What actually helps?
- Statins: the evidence backbone. Atorvastatin 20-40mg or rosuvastatin 10-20mg daily cuts LDL by half and reduces heart attack and stroke risk by roughly a quarter to a third over 5 years in people at elevated risk.
- Soluble fiber: 5-10g a day from oats, beans, barley, or psyllium lowers LDL by about 5%. Two bowls of oatmeal get you there.
- Swap fats, do not just cut them: replacing saturated fat (butter, fatty meat, full-fat dairy) with unsaturated fat (olive oil, nuts, fish) lowers LDL meaningfully. Dietary cholesterol in eggs matters far less than once thought.
- Ezetimibe 10mg: the usual add-on when a statin alone falls short, adding another 15-20% LDL reduction.
- Exercise and weight: raise HDL and lower triglycerides more than LDL; worth doing for the whole risk picture, not as a statin substitute when one is indicated.
When is it an emergency?
Cholesterol never announces itself; the emergency is the event it causes. Chest pressure spreading to the arm or jaw, shortness of breath, cold sweat, or nausea lasting more than a few minutes is a possible heart attack: call emergency services and chew a regular aspirin if told to by the dispatcher. Sudden face droop, arm weakness, or garbled speech means stroke and the same call. Pymander's escalation routing is built and tested specifically for this class of decision; see the safety architecture working paper.
What a Pymander AI doctor consult looks like
Illustrative example, not a real member's messages.
Common questions
Do statins cause muscle pain?
True statin muscle injury is much rarer than reputation suggests. In blinded trials, the difference in muscle aches between statin and placebo groups is small, and "nocebo" studies show most people who ache on a statin also ache on a sugar pill. About 1 in 100 users gets genuine, reproducible muscle symptoms. The fix is usually a lower dose, a different statin, or every-other-day dosing, not abandoning treatment. Severe muscle pain with dark urine is rare but needs same-day care.
Can I lower cholesterol without medication?
Yes, up to a point. Diet changes, 5-10g of daily soluble fiber, weight loss, and exercise can realistically lower LDL by 10-15%. That is enough for someone at low overall risk with mild elevation. It is not enough when LDL is over 190, after a heart attack, or in diabetes with other risk factors; in those situations, skipping a statin leaves most of the preventable risk on the table. Lifestyle change and medication are partners, not rivals.
Are eggs bad for cholesterol?
For most people, no. Dietary cholesterol has a surprisingly small effect on blood cholesterol because the liver compensates by making less. Large studies have found that up to an egg a day does not raise heart risk in healthy people. The foods that genuinely raise LDL are saturated fat (fatty meats, butter, coconut oil) and trans fat (largely banned but still in some processed goods). People with diabetes or familial hypercholesterolemia may still be advised to moderate eggs.
How long does it take for a statin to work?
The LDL drop happens fast: most of the effect arrives within 2 to 4 weeks of starting. The standard practice is a repeat lipid panel 4 to 12 weeks after starting or changing a dose to confirm the response, then checks every 3 to 12 months. The benefit that matters, fewer heart attacks and strokes, accrues over years of consistent use, which is why adherence beats dose perfection.
What should triglycerides be, and how do I lower them?
Normal is under 150 mg/dL; 200-499 is high; over 500 is very high and brings pancreatitis risk. Triglycerides respond strongly to lifestyle: cutting alcohol (the single biggest lever for many people), reducing refined carbs and sugar, losing weight, and regular exercise can drop them by 20-50%. High-dose omega-3 prescriptions are used for very high levels. A fasting test matters here, because triglycerides spike after meals.
At what age should I get my cholesterol checked?
Screening guidelines recommend a baseline lipid panel at age 20, repeated every 4 to 6 years if normal. Earlier and more frequent testing is right if you have a family history of early heart disease or very high cholesterol, diabetes, high blood pressure, or you smoke. Children with a strong family history of familial hypercholesterolemia are often screened between ages 9 and 11.
Related questions
- Does atorvastatin cause muscle pain?
- When should you take a statin?
- Can you stop taking a statin suddenly?