Cholesterol made simple: what the new 2026 ACC/AHA guidelines mean for you

Reviewed by Professor Dr. Mohammad H. Jamal, Professor of Surgery, Kuwait University. Last reviewed August 2026.

In March 2026, the American College of Cardiology (ACC), the American Heart Association (AHA) and nine other medical organisations released a completely new guideline on managing cholesterol and blood fats. It replaces the old 2018 guideline. This page explains what changed, in plain language, and what it means for you and your family.

First, what is cholesterol?

Cholesterol is a soft, waxy fat that travels in your blood. Your body needs some of it to build cells and make hormones. The problem starts when there is too much of the wrong kind. Over the years, the extra cholesterol settles into the walls of your arteries and forms plaque. Plaque narrows the arteries and can crack open, causing a heart attack or a stroke.

This does not happen overnight. It builds up quietly over decades, which is exactly why the new guideline pushes doctors to act earlier rather than waiting for symptoms.

The numbers on your blood test

• LDL cholesterol (the "bad" one). This is the main troublemaker and the main target of treatment. Lower is better.
• HDL cholesterol (the "good" one). It helps carry cholesterol away from the arteries. A good HDL is helpful, but it does not cancel out a high LDL.
• Triglycerides. Another type of fat in the blood. Levels of 150 mg/dL (1.7 mmol/L) or above raise your risk, and they respond very well to diet, exercise and weight loss.
• Non-HDL cholesterol. Simply your total cholesterol minus your HDL. It captures all the harmful particles in one number.
• Lipoprotein(a), written Lp(a). A sticky, inherited particle. This is a big new focus of the 2026 guideline.

The 6 biggest changes in 2026

1. Target numbers are back

The 2018 guideline mostly asked doctors to lower LDL by a percentage. The 2026 guideline brings back clear goal numbers based on your personal risk. You now have an actual target to aim for.

2. A new and more accurate risk calculator

Doctors now use the PREVENT calculator instead of the older tool, which was overestimating 10-year risk by roughly 40 to 50 percent. PREVENT is designed for adults aged 30 to 79 who do not already have heart disease, and it estimates your risk over both 10 years and 30 years.

3. Everyone should check Lp(a) once

Lp(a) is decided by your genes, stays fairly stable for life, and barely moves with diet. The guideline now recommends measuring it at least once in adulthood. A high level (50 mg/dL or 125 nmol/L and above) raises long-term risk of heart attack and stroke by about 1.4 times, and a very high level (250 nmol/L) at least doubles it. Since it is a one-off test, it is worth asking for.

4. Prevention now starts in childhood

All children should have a cholesterol check between ages 9 and 11 if they have never been tested, and again around ages 19 to 21. This is mainly to catch inherited high cholesterol (familial hypercholesterolaemia), which runs in families and is common in the region.

5. Calcium scoring when the picture is unclear

If your risk sits in a grey zone, a quick CT scan called a coronary artery calcium (CAC) score can look directly for early plaque in the heart arteries. It is considered for men aged 40 and over and women aged 45 and over. Finding any calcium at all pushes your LDL target down.

6. More treatment options than ever

Statins are still the foundation, but if they are not enough, there are now several proven medicines to add on top.

Your LDL target, at a glance

Your situation	LDL goal
You already had a heart attack, stroke, stent or bypass, and you are at very high risk	Below 55 mg/dL (1.4 mmol/L)
You already have heart or artery disease, but not in the very high risk group	Below 70 mg/dL (1.8 mmol/L)
No heart disease, but high risk on the PREVENT calculator	Below 70 mg/dL (1.8 mmol/L)
No heart disease, low to intermediate risk	Below 100 mg/dL (2.6 mmol/L)
Very high LDL of 190 mg/dL (4.9 mmol/L) or more	Below 100 mg/dL, or below 70 mg/dL if you also have inherited high cholesterol, other risk factors, or plaque on a scan

A simple rule for non-HDL: your non-HDL goal is 30 points higher than your LDL goal. So an LDL goal of 55 means a non-HDL goal of 85, an LDL goal of 70 means 100, and an LDL goal of 100 means 130 mg/dL.

These are general targets. Your own number should be set by your doctor after looking at your full history.

Step one is always lifestyle

No medicine works as well as it should if the daily habits are working against it. The guideline puts lifestyle first, and for many people at lower risk it is enough on its own.

• Eat mostly real food. Vegetables, fruit, whole grains, pulses, nuts, fish and olive oil. A Mediterranean style of eating is repeatedly shown to help. Cut back on fried food, processed meat, pastries, biscuits and anything with hydrogenated or partially hydrogenated oil.
• Watch the sugar and refined carbohydrates. This matters most for triglycerides. Soft drinks and juices are usually the fastest win.
• Move regularly. Aim for about 150 minutes a week of brisk activity. Walking counts.
• Lose extra weight if you carry it. Even 5 to 10 percent of your body weight changes your numbers noticeably.
• Stop smoking and vaping. Nothing else on this list gives a faster benefit to your arteries.
• Sleep properly. Seven to nine hours. The new guideline lists sleep as part of cholesterol care for the first time.
• Limit alcohol, which raises triglycerides sharply.

Medicines: what your doctor may offer

• Statins remain first choice. They are the best studied cholesterol medicines we have and they clearly reduce heart attacks, strokes and death.
• Ezetimibe is a tablet that blocks cholesterol absorption from food. It is often the first thing added to a statin.
• Bempedoic acid is a newer tablet, useful for people who cannot tolerate statins.
• PCSK9 inhibitors are injections given every two to four weeks that lower LDL very powerfully. They are used for high risk patients who are still above target.
• Inclisiran is an injection given only twice a year. It lowers LDL well, and studies confirming its effect on heart attacks and strokes are still ongoing.

About statin side effects

Muscle aches are the most common complaint, but in careful studies most people who report them do just as well on a placebo. If you feel unwell on a statin, please tell your doctor rather than stopping quietly. Changing the dose, switching to a different statin, or trying alternate-day dosing usually solves it.

What about high triglycerides?

Lifestyle changes and a statin remain the foundation. If triglycerides stay very high, especially at 1000 mg/dL (11.3 mmol/L) or above, additional medicines such as fenofibrate or icosapent ethyl are used, largely to protect the pancreas from inflammation.

Groups that need extra attention

• Diabetes. Adults aged 40 to 75 with type 1 or type 2 diabetes should be on cholesterol-lowering treatment regardless of their LDL number.
• Chronic kidney disease (stage 3 or higher) and HIV. Same recommendation from age 40.
• Family history. If a parent, brother or sister had a heart attack early (men before 55, women before 65), get tested and tell your doctor.
• Pregnancy. Most cholesterol medicines are stopped while trying to conceive, during pregnancy and while breastfeeding.
• Cancer treatment. Cholesterol medicines are usually continued unless there is a specific reason to stop.
• Age over 75. Treatment can still be worthwhile and is decided case by case.

Obesity, weight loss surgery and cholesterol

Abnormal cholesterol is found in roughly 40 to 50 percent of people living with severe obesity. Significant, sustained weight loss improves every part of the lipid profile: total cholesterol and LDL fall, triglycerides fall substantially, and HDL rises, although HDL usually takes up to a year to improve fully.

In published series of patients after metabolic and bariatric surgery, average total cholesterol dropped from around 214 to 185 mg/dL, LDL from 115 to 90 mg/dL, triglycerides from 188 to 127 mg/dL, and HDL rose from 46 to 55 mg/dL. Many patients are able to reduce or stop their cholesterol medication after surgery, always under medical supervision.

This does not replace guideline-based care. Cholesterol still needs to be monitored after weight loss, and any decision to change medication belongs to your doctor.

Questions worth asking at your next appointment

• What is my LDL number, and what should my personal target be?
• What is my 10-year and 30-year risk on the PREVENT calculator?
• Have I ever had my Lp(a) measured?
• Would a coronary calcium score help clarify my risk?
• Am I at my goal, and if not, what should we add?
• Should my children be screened?

Common questions

What should my LDL cholesterol level be?

It depends on your risk. Below 55 mg/dL if you have heart disease and are at very high risk, below 70 mg/dL if you have heart disease or are at high risk, and below 100 mg/dL if you are at low or intermediate risk. Your doctor sets your personal target.

Do I need to be tested for lipoprotein(a)?

Yes. The 2026 guideline recommends measuring Lp(a) at least once in adulthood. It is genetically determined and stays stable through life, so a single test is usually enough.

Can I lower my cholesterol without medication?

Many people at lower risk can. A Mediterranean style diet, about 150 minutes of activity a week, losing 5 to 10 percent of body weight, stopping smoking, sleeping seven to nine hours and limiting alcohol all help. If your numbers stay above target after a fair trial, your doctor may add medication.

Do statins cause muscle pain?

Muscle aches are the most commonly reported side effect, but careful studies show most people who report them experience the same symptoms on a placebo. Tell your doctor instead of stopping the medicine. Adjusting the dose, switching statin or alternate-day dosing usually solves it.

The bottom line

Lower LDL, kept lower for longer, protects the heart and brain. More than 80 percent of cardiovascular disease is preventable. Know your numbers, fix what you can with daily habits, and take the medication your doctor recommends without waiting for a warning sign.

This article is for general education only and is not a substitute for medical advice. Do not start, stop or change any medication without speaking to your doctor.

Sources

• Blumenthal RS, Morris PB, Gaudino M, et al. 2026 ACC/AHA/AACVPR/ABC/ACPM/ADA/AGS/APhA/ASPC/NLA/PCNA Guideline on the Management of Dyslipidemia. JACC and Circulation, published 13 March 2026.
• American Heart Association and American College of Cardiology joint news release, 13 March 2026.
• National Lipid Association summary of the 2026 Dyslipidemia Guideline.
• Nguyen NT, Brethauer SA, Morton JM, Ponce J, Rosenthal RJ, eds. The ASMBS Textbook of Bariatric Surgery. Springer, 2020.