You get your blood test results, and a number in red catches your eye: cholesterol. Is it serious? Should you overhaul your entire diet overnight? The topic is surrounded by common misconceptions, some outdated, others still wrongly held today.
Here's what a cardiologist really wants you to understand.
What cholesterol is, and why it isn't "bad" in itself
Cholesterol is a fatty substance essential to the body: it's part of our cell membranes, certain hormones, and vitamin D. The body makes most of it itself; the rest comes from diet. So the problem isn't cholesterol itself, but its excess, and above all how it's distributed among its different carriers.
LDL ("bad" cholesterol) carries cholesterol to tissues; in excess, it tends to infiltrate artery walls and form plaques, a process called atherosclerosis. HDL ("good" cholesterol) does the reverse trip, carrying excess cholesterol back to the liver for elimination. Triglycerides, another type of blood fat, complete the picture and are also linked to cardiovascular risk when elevated.
What a lipid panel shows
A standard lipid panel measures total cholesterol, LDL, HDL, and triglycerides, generally while fasting. The cardiologist interprets these numbers taking your overall risk profile into account: age, blood pressure, smoking, diabetes, family history, weight. The same LDL doesn't carry the same weight for a 30-year-old with no other risk factor as for a 60-year-old with high blood pressure and diabetes — that's why there's no universal threshold that applies to everyone, but a personalized target, stricter or looser depending on your overall risk.
Part of high cholesterol has a genetic component — familial hypercholesterolemia is the most striking example — and affects lean, active people, unrelated to their diet. This is one reason early screening, including for people who feel perfectly healthy, still makes full sense.
Diet matters, but not quite the way many people think
For a long time, cholesterol found in food (eggs, seafood) was the main target of blame. Understanding has evolved: for most people, saturated fat and trans fat — present in large amounts in processed foods, fried foods, certain cured meats, and industrial pastries — raise LDL far more than dietary cholesterol itself.
Conversely, certain food choices have a demonstrated, favorable effect: unsaturated fats (olive oil, avocado, nuts, oily fish), soluble fiber (oats, legumes), and an overall diet rich in fruits and vegetables are associated with a more favorable lipid profile.
When does treatment become necessary
The decision to treat is never based on the cholesterol number alone. The cardiologist assesses your overall cardiovascular risk over several years, combining the lipid panel with all your risk factors. For someone at high risk — a personal cardiac history, diabetes, poorly controlled hypertension, active smoking — medication can bring a significant net benefit, even with moderately elevated LDL. For someone at low risk, lifestyle measures alone, reassessed regularly, are often suggested first.
Persistent misconceptions about statins
Few treatments draw as much suspicion as statins, the most widely used medications for lowering LDL. A few useful clarifications before discussing them with your cardiologist.
"Statins always cause muscle pain": muscle pain is possible and documented, but it affects a minority of patients, and many cases reported by patients themselves turn out, once evaluated, not to be related to the treatment. When it genuinely occurs, switching medication or dosage resolves most situations — it's never a reason to stop treatment on your own without talking to your doctor.
"Once you start, you can never stop": this isn't quite accurate. The decision to treat, like the decision to stop, depends on your overall cardiovascular risk, reassessed over time. What is true, though, is that stopping effective treatment without medical reassessment generally brings LDL back up to its starting level.
"Supplements (red yeast rice, over-the-counter omega-3) can replace a prescribed treatment": some have a real effect, but generally a more modest one, less well documented than prescribed treatments, and their quality varies a lot from product to product, lacking the strict oversight applied to medications. They should never replace a treatment recommended by your cardiologist without discussing it with them.
What the research says
According to the World Health Organization, high cholesterol is one of the leading modifiable risk factors for cardiovascular disease, alongside hypertension, smoking, and diabetes. International data converge on one point: lowering LDL, whether through diet, physical activity, or treatment when indicated, measurably reduces the risk of cardiovascular events — the size of the benefit depending on the person's initial risk level.
In practice, in Israel
A lipid panel is a simple test, ordered by your family doctor or cardiologist, generally covered as part of your health fund's routine follow-up. In case of high cholesterol, particularly with a family history or other risk factors, a cardiologist's opinion lets you assess your overall risk and decide, together, on the most suitable strategy.
High cholesterol on a blood test, on its own, doesn't tell the whole story: it's your overall risk that matters. A cardiologist's opinion lets you see clearly and act proportionately. Find a cardiologist near you on OlamKal and book an appointment.
To wrap up
Cholesterol is neither an enemy to eliminate at all costs, nor a number to ignore. It's a piece of data to interpret in the context of your overall profile, with a professional — neither panic over a single number, nor indifference toward a risk that builds silently over the years.
