7 Cholesterol Myths Cardiologists Want You to Stop Believing

October 5, 2026 avinashmittal

Cholesterol is one of the most talked-about health numbers, and one of the most misunderstood. Social media is full of claims that “bad” cholesterol isn’t really bad or that statins do more harm than good. Cardiologists are pushing back. Here are seven common cholesterol myths, and what the evidence actually shows.

Quick answer: High LDL (“bad”) cholesterol does raise the risk of heart attack and stroke; cardiologists quoted by NBC News say there’s no debate about that. But cholesterol itself isn’t all bad, eggs aren’t the main problem, you can’t feel high cholesterol, thin people can have it too, and for people who need them, statins’ benefits outweigh their usually mild side effects. The only way to know your levels is a blood test.

Myth 1: “Bad” Cholesterol Isn’t Really Bad

This is the claim cardiologists are most worried about. In an October 2026 report, NBC News said heart doctors insist there’s no debate: high levels of LDL cholesterol in the blood can lead to heart attack, stroke or death. NBC also noted that cardiovascular deaths have fallen dramatically, largely because of statins, blood pressure medicines and much less smoking.

Myth 2: All Cholesterol Is Harmful

Your body needs cholesterol. According to BBC Science Focus, every cell uses it, and you need it to make hormones, maintain cell membranes and make vitamin D from sunlight. Cholesterol travels in particles called lipoproteins:

Type	What it does	Why it matters
LDL (“bad”)	Carries cholesterol from the liver to the body	Too much can build up as plaque in artery walls
HDL (“good”)	Carries extra cholesterol back to the liver	Acts more like a clean-up crew

When there’s too much LDL, plaque can build up and narrow your arteries over time, raising the risk of heart attack and stroke.

Myth 3: Eating Eggs Is the Main Cause of High Cholesterol

Most of the cholesterol in your blood is made by your liver, not absorbed from food, and the liver usually makes less when you eat cholesterol-rich foods, Science Focus explains. Recent research has found that eggs don’t raise LDL cholesterol in the bloodstream.

The bigger dietary concern is saturated fat, found in red meat and other foods, which can disrupt how the liver regulates cholesterol. One review cited by Science Focus linked each extra daily 50 g serving of processed red meat with a 42% higher chance of coronary heart disease. Fiber, on the other hand, helps your body clear LDL; oats are one example, as our article on whether oatmeal is good for diabetics explains.

Myth 4: You’d Know if Your Cholesterol Were High

High cholesterol usually builds up silently. UCL cardiologist Prof. Riyaz Patel told Science Focus that “you’re not going to feel it at all.” A rare inherited form, familial hypercholesterolemia, can sometimes cause small yellowish deposits near the eyes, but most people have no signs. That’s why testing matters: according to Science Focus, the CDC advises healthy adults to get their cholesterol checked every four to six years. See our guide on how often you should get a physical for other routine checks.

Myth 5: Thin, Active People Can’t Have High Cholesterol

Weight is only part of the picture. People with more body fat are at higher risk, and Science Focus notes that losing 5% to 10% of body weight can clearly improve cholesterol in people who are overweight. But thin people can have high cholesterol too. Discovery Health lists causes beyond diet, including an underactive thyroid, some medicines, chronic kidney failure, alcohol misuse and inherited high cholesterol.

How you lose weight matters as well. A 2024 study described by Science Focus found cholesterol rose sharply in people on a ketogenic diet even when they lost weight, likely because of high saturated fat and low fiber.

Myth 6: Statins Do More Harm Than Good

Statins can cause side effects, such as headaches, digestive issues, muscle aches or sleep problems, Science Focus reports. Two bigger worries are often exaggerated:

Diabetes: statins can slightly raise blood sugar. University of Glasgow professor Naveed Sattar explained to Science Focus that this usually matters only for people already very close to the diabetes cutoff.
Liver damage: statins can slightly raise liver enzymes, but this is usually small, causes no symptoms and often settles on its own, according to Oxford’s Dr. Christina Reith, who said the benefits far outweigh the risks.

Despite this, one study cited by Science Focus found fewer than half of U.S. adults eligible for statins were taking them. If you have side effects, talk to your doctor about adjusting the dose or trying another option rather than stopping on your own.

Myth 7: Diet and Exercise Can Always Fix It

Lifestyle changes help, but whether they’re enough depends on the cause and your overall risk. Updated American Heart Association and American College of Cardiology guidelines in 2026, reported by NBC News, recommend statins for adults 30 and older with LDL of 160 mg/dL or higher, set an LDL goal below 100 mg/dL for most people without risk factors, and a goal below 55 mg/dL for people with heart disease. NPR reported that the guidelines also recommend a lipoprotein(a) blood test, which can reveal inherited risk.

What to Do About Your Cholesterol

Get tested and know your LDL number.
Cut back on saturated fat and processed red meat.
Eat more fiber from oats, beans, fruits and vegetables.
Stay active; regular exercise supports heart health and a lower resting heart rate.
Talk to your doctor about whether medication makes sense for your risk.

Frequently Asked Questions

Is LDL cholesterol really bad?

Yes, high LDL raises the risk of heart attack and stroke. Cardiologists say there’s no scientific debate about this.

Do eggs raise cholesterol?

For most people, recent research suggests eggs don’t raise LDL cholesterol. Saturated fat has a bigger effect.

Are statins bad for you?

Like any medicine they can cause side effects, usually mild, but for people who need them experts say the benefits of preventing heart attacks and strokes outweigh the risks.

Can you have high cholesterol and be thin?

Yes. Genes, thyroid problems, some medicines and other conditions can raise cholesterol regardless of weight.

How often should I check my cholesterol?

Healthy adults are generally advised to check every four to six years, and more often if they have risk factors or high levels.

The Bottom Line

The biggest cholesterol myths can lead people to skip tests or stop needed treatment. High LDL is a real risk factor, you usually can’t feel it, and appearance doesn’t tell you your levels. Get tested, focus on less saturated fat and more fiber and activity, and decide on medication with your doctor based on evidence, not social media.