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Cholesterol is a type of fat (lipid) in your blood. Your cells need cholesterol, and your body makes all it needs. But you also get cholesterol from the food you eat.
If you have too much cholesterol, it starts to build up in your arteries. (Arteries are the blood vessels that carry blood away from the heart.) This is called hardening of the arteries, or atherosclerosis. It is the starting point for some heart and blood flow problems. The buildup can narrow the arteries and make it harder for blood to flow through them. The buildup can also lead to dangerous blood clots and inflammation that can cause heart attacks and strokes.
There are different types of cholesterol.
Your cholesterol levels can help your doctor find out your risk for having a heart attack or stroke. But it's not just about your cholesterol. Your doctor uses your cholesterol levels plus other things to calculate your risk. These include:
Many things can affect cholesterol levels, including:
You need a blood test to check your cholesterol.
A cholesterol test, also called a lipid panel, measures all of the fats in your blood, including total, LDL, and HDL cholesterol.
High cholesterol levels don't make you feel sick. So the blood test is the only way to know your cholesterol levels.
A heart-healthy lifestyle along with medicines can help lower your risk.
The way you choose to lower your risk will depend on how high your risk for heart attack and stroke is. It will also depend on how you feel about taking medicines. Your doctor can help you know your risk. Your doctor can help you balance the benefits and risks of your treatment options.
Heart-healthy lifestyle changes can help lower risk for everyone. They include:
Changing old habits may not be easy, but it is very important to help you live a healthier and longer life. Having a plan can help. Start with small steps. For example, commit to adding one fruit or one vegetable a day for a week. Instead of having dessert, take a short walk.
Statin medicine can lower the risk of heart attack and stroke.
Health Tools help you make wise health decisions or take action to improve your health.
Cholesterol levels are affected by:
High cholesterol does not cause symptoms. It is usually found during a blood test that measures cholesterol levels.
Some people with rare lipid disorders may have symptoms such as bumps in the skin, hands, or feet, which are caused by deposits of extra cholesterol and other types of fat.
Having high cholesterol can lead to the buildup of plaque in artery walls. This buildup is called atherosclerosis. It can lead to coronary artery disease (CAD), heart attack, stroke or transient ischemic attack (TIA), and peripheral arterial disease.
Atherosclerosis can cause these problems because it:
For more information, see:
Some things that increase your risk for high cholesterol are things you can change, but some are not. It's important to lower your risk as much as possible.
Things you can change include:
Each of these things can raise your LDL, lower your HDL, or both.
Things you cannot change include:
For more information, see Cause.
High cholesterol usually has no symptoms. Sometimes the first sign that you have high cholesterol or other risk factors for heart disease is a heart attack, a stroke, or a transient ischemic attack (TIA). If you have any symptoms of these, call 911 or other emergency services.
Heart attack symptoms include:
After you call 911, the operator may tell you to chew 1 adult-strength or 2 to 4 low-dose aspirin. Wait for an ambulance. Do not try to drive yourself.
Nitroglycerin. If you typically use nitroglycerin to relieve angina and if one dose of nitroglycerin has not relieved your symptoms within 5 minutes, call 911. Do not wait to call for help.
Women's symptoms. For men and women, the most common symptom is chest pain or pressure. But women are somewhat more likely than men to have other symptoms like shortness of breath, nausea, and back or jaw pain.
Stroke and TIA symptoms include:
Any of the following doctors, nurses, or specialists can order a cholesterol test and treat high cholesterol:
A registered dietitian can help you with a diet to lower your cholesterol.
People who have rare lipid disorders, which can be hard to treat, may need to see a specialist, such as a lipidologist or an endocrinologist.
A blood test is used to check cholesterol levels.
A cholesterol test measures the level of total cholesterol plus the level of different types of cholesterol and fats in your blood. These include LDL, HDL, and triglycerides.
To learn about the test, see the topic Cholesterol and Triglyceride Tests.
For more information about risk, see the topic Heart Attack and Stroke Risk Screening.
Your doctor may order other tests or talk to you about other risk factors for heart attack and stroke. This helps you and your doctor decide what treatment to lower risk is right for you. You might talk about:
How often you need to be checked depends on whether you have other health problems and your risk of heart attack and stroke.
Your child's doctor may suggest a cholesterol test based on your child's age, family history, or a physical exam.
The goal of treatment is to reduce your chances of having a heart attack or stroke. The goal is not to lower your cholesterol numbers alone.
The two types of treatment are:
Lifestyle changes are always important, even if you take medicines to lower your risk.
Your doctor may suggest that you make one or more of the following changes:
For more information, see Making Lifestyle Changes.
Some people also take medicines called statins, in addition to lifestyle changes, to reduce their risk.
For some people, the chance of having a heart attack or stroke is high. These people may decide to start taking a statin, because statins can reduce this risk.
For other people, it's not as clear if they need to take a statin. You and your doctor will need to look at your overall health and any other risks you have for heart attack and stroke.
A heart-healthy lifestyle can help you prevent heart and blood flow problems, such as heart attacks and strokes.
This lifestyle includes:
Heart-healthy diets include the DASH diet, the Mediterranean diet and the American Heart Association diet recommendations. This chart compares several heart-healthy diets( What is a PDF document? ).
Remember that cholesterol is just one of the things that increase your risk for heart attack and stroke. Controlling other health problems, such as high blood pressure and diabetes, can also help reduce your overall risk.
Lifestyle changes are an important way to stay healthy and lower your risk of a heart attack or a stroke. They are always important, even if you take medicines too.
You can have a healthy lifestyle and still have a cholesterol level that puts you at risk for heart problems or stroke. Cholesterol problems can run in families. And cholesterol goes up as you age, no matter how healthy you are. But healthy habits are worth having because they can help you avoid some of the problems related to cholesterol, like heart disease, peripheral arterial disease, heart attack, and stroke.
One Man's Story:
"The walking was the easy part for me. I get out every evening for a walk. The food part took some thought. Each week, I added a food that was good for me and took something away that was bad for me."— Joe
Read more about how Joe is getting healthy by making one change at a time.
Eat heart-healthy foods
Making healthy eating habits a part of your daily life is one of the best things you can do to lower your risk. Eating heart-healthy foods can help you manage your weight, cholesterol, and blood pressure. There are a few heart-healthy eating plans you can choose from.
If you have questions about which eating plan to follow, talk to your doctor.
For more information about heart-healthy foods, see:
Stay at a healthy weight
Losing weight if you need to, and staying at a healthy weight, can lower your risk. Losing weight can also help lower your blood pressure.
For help, see:
Exercise can help you lose weight, lower your blood pressure, and lower your risk. Try to do moderate activity at least 2½ hours a week. Or try to do vigorous activity at least 1¼ hours a week. Getting active has many other benefits too.
For tips, see:
Quitting smoking may be the best thing you can do to lower your risk of heart attack and stroke.
One Woman's Story:
"Terri's heart attack scared me to death. I decided that this time, I'm doing the whole package. I'm quitting smoking for good."— Linda
Read more about Linda and how she quit.
"I'm just not that type of person who can change everything at once."— Joe
Read more about Joe and how he's changing his habits.
You can learn simple steps to help you make lifestyle changes, like setting goals. Work on one small goal at a time. Expect slip-ups. Get support from others. Reward yourself for each success. To find out more about making healthy lifestyle changes, see Change a Habit by Setting Goals.
When changing a lifestyle habit, barriers can sometimes get in your way. Figuring out what those barriers are and how you can get around them can help you reach your healthy eating goals.
For help, see:
"I've learned to not beat myself up [when I slip up]. Instead, I refocus on my plan and get right back to eating healthy food. What keeps me going is the results—I've lost weight and I feel younger every day."— Joe
Read more about how Joe is being heart-healthy.
Some people need to take medicines to reduce their risk of a heart attack or stroke. Your doctor may recommend that you take medicines called statins.
You and your doctor can work together to decide what treatment is best for you. Your doctor may recommend that you take statins if the benefits outweigh the risks.
Statins are always used along with a plan for a heart-healthy lifestyle, not instead of it.
"I don't mind taking a pill a day. As long as it's doing me some good. And I no longer have any doubts about that."— Tony
Read more about Tony and how medicine helps lower his risk.
Statins can lower the risk of a heart attack or a stroke.
Other medicines can improve cholesterol levels, but they have not been proven to lower the risk of a heart attack or a stroke. Your doctor may recommend these medicines if there is a reason you can't take a statin. These medicines include bile acid sequestrants, cholesterol absorption inhibitors, fibric acid derivatives, and nicotinic acid (niacin).
Some people find it hard to take their medicines properly. If you do take medicine, it is important to use it the right way.
Some people don't see why they should take medicines every day when they don't feel sick. Cholesterol doesn't make you feel sick. But it's important to take your statin medicine, because it can lower your risk of heart attack and stroke.
Some side effects are more likely and may be worse when you use higher doses of statins. If you're having side effects, tell your doctor. You may be able to take a different statin.
Be sure to tell your doctor about all of the medicines that you take. This includes prescription and over-the-counter medicines, herbs, and supplements. Sometimes they can interact with other medicines and cause problems.
If you have trouble taking your medicine for any reason, talk to your doctor.
Some plant products can help lower cholesterol. But don't use them to replace your doctor's treatment. Research has not proven that they lower the risk of heart attacks and strokes. Whether or not you use such products, be sure to continue your diet, exercise, and prescription medicines.
As with any new form of treatment, make sure to talk with your doctor first. This is especially important if you take statins. Combining statins and some supplements can cause dangerous side effects.
Psyllium is an ingredient in some dietary supplements—Metamucil, for example. It's a fiber from fleawort and plantago seeds.
Doctors aren't sure how it helps cholesterol levels. It may make the small intestine absorb less cholesterol, so less of it enters your blood.
Psyllium is approved by the U.S. Food and Drug Administration (FDA). The main side effect is increased bowel movements. Products containing psyllium aren't recommended to replace foods as a source of fiber.
Sterol and stanol esters are used in cholesterol-lowering margarine spreads.
Sterol esters might limit how much cholesterol the small intestine can absorb. These margarines are used along with a heart-healthy diet.
Red yeast rice contains a natural form of lovastatin, a statin medicine. This supplement may keep your body from producing too much cholesterol. But this supplement can cause dangerous side effects.
Talk to your doctor before you try red yeast rice. Serious side effects include rhabdomyolysis and hepatitis. Red yeast rice is not regulated by the U.S. Food and Drug Administration (FDA), so you cannot be sure of the amount of red yeast in a supplement. This means you cannot be sure of its dose and safety.
If you take red yeast rice, call your doctor right away if you have a bad reaction to it such as severe muscle pain or symptoms of hepatitis.
Do not take red yeast supplements if you are taking statins. Combining them can cause dangerous side effects.
There are some dietary supplements that you may hear about to lower your risk of heart disease, heart attack, and stroke. It is not clear if some vitamins, minerals, and multivitamins can lower risk. But it is clear that some supplements, such as vitamin E and beta-carotene, do not lower risk.footnote 1
Talk with your doctor about the best ways to lower your risk of heart disease, heart attack, and stroke. Tell your doctor if you plan to use dietary supplements or vitamins. Your doctor can make sure they are safe for you.
U.S. Preventive Services Task Force (2014). Vitamin, mineral, and multivitamin supplements for the primary prevention of cardiovascular disease and cancer. U.S. Preventive Services Task Force. http://www.uspreventiveservicestaskforce.org/uspstf/uspsvita.htm. Accessed March 28, 2014.
Other Works Consulted
Buckley DI, et al. (2009). C-reactive protein as a risk factor for coronary heart disease: A systematic review and meta-analysis for the U.S. Preventive Services Task Force. Annals of Internal Medicine, 151(7): 483–495.
Eckel RH, et al. (2013). 2013 AHA/ACC guideline on lifestyle management to reduce cardiovascular risk: A report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. Circulation. http://circ.ahajournals.org/content/early/2013/11/11/01.cir.0000437740.48606.d1.citation. Accessed December 5, 2013.
Goff DC Jr, et al. (2013). 2013 ACC/AHA guideline on the assessment of cardiovascular risk: A report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. Circulation, published online November 12, 2013. DOI: 10.1161/01.cir.0000437741.48606.98. Accessed November 22, 2013.
Miller M, et al. (2011). Triglycerides and cardiovascular disease: A scientific statement from the American Heart Association. Circulation, 123(20): 2292–2333.
Mosca L, et al. (2011). Effectiveness-based guidelines for the prevention of cardiovascular disease in women 2011 update: A guideline from the American Heart Association. Circulation, 123(11): 1243–1262.
Pearson TA, et al. (2003). Markers of inflammation and cardiovascular disease: American Heart Association and the Centers for Disease Control and Prevention scientific statement. Circulation, 107(3): 499–511.
Raymond JL, Couch SC (2012). Medical nutrition and therapy for cardiovascular disease. In LK Mahan et al., eds., Krause's Food and the Nutrition Care Process, 13th ed., pp. 742–781. St Louis: Saunders.
Red yeast rice (2009). Medical Letter on Drugs and Therapeutics, 51(1320): 71–72.
Sacks FM, et al. (2006). Soy protein, isoflavones, and cardiovascular health: An American Heart Association science advisory for professionals from the Nutrition Committee. Circulation, 113(7): 1034–1044. Also available online: http://circ.ahajournals.org/cgi/content/full/113/7/1034.
Stone NJ, et al. (2013). 2013 ACC/AHA guideline on the treatment of blood cholesterol to reduce atherosclerotic cardiovascular risk in adults: A report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. Circulation, published online November 12, 2013. DOI: 10.1161/01.cir.0000437738.63853.7a. Accessed November 18, 2013.
U.S. Preventive Services Task Force (2009). Using nontraditional risk factors in coronary heart disease risk assessment. Available online: http://www.uspreventiveservicestaskforce.org/uspstf/uspscoronaryhd.htm.
Current as ofJuly 22, 2018
Author: Healthwise StaffMedical Review: Kathleen Romito, MD - Family MedicineE. Gregory Thompson, MD - Internal MedicineMartin J. Gabica, MD - Family MedicineElizabeth T. Russo, MD - Internal MedicineAdam Husney, MD - Family Medicine
Current as of:
July 22, 2018
Medical Review:Kathleen Romito, MD - Family Medicine & E. Gregory Thompson, MD - Internal Medicine & Martin J. Gabica, MD - Family Medicine & Elizabeth T. Russo, MD - Internal Medicine & Adam Husney, MD - Family Medicine
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