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Home > Consumer Focus Archive > What You Need to Know About Cholesterol
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What You Need to Know About Cholesterol

A nurse listening to a man's heart.High blood cholesterol increases your risk for heart disease – the number one killer in Americans. About 50% of American adults aged 20 years and older have cholesterol levels that are higher than desirable.

Posted: July 1, 2008

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Cholesterol and Heart Disease

A man holding his chest in pain.Heart disease is the number one killer of women and men in the U.S. Each year more than a million Americans have heart attacks, and about a half million people die from heart disease. High blood cholesterol is one of the major risk factors for heart disease. When there is too much cholesterol (a fat-like substance) in your blood, it builds up in the walls of your arteries. Over time this buildup causes hardening of the arteries, the arteries become narrowed, and blood flow to the heart is slowed down or blocked. The higher your blood cholesterol level, the greater your risk for developing heart disease or having a heart attack.

An illustration of how a blood clot forms; courtesy of Medline Plus Medical Encyclopedia

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Know Your Numbers

Everyone age 20 and older should have their cholesterol measured at least once every 5 years. There are no signs or symptoms of high cholesterol so many people are unaware that their cholesterol level is too high – that’s why it is so important to get your levels checked. Ask your doctor for a blood test called a lipoprotein profile to measure your cholesterol levels.

  • Total cholesterol – A desirable total cholesterol number is one under 200.
  • Low-density lipoprotein (LDL) cholesterol – This is the “bad” type of cholesterol that can block your arteries. You should try to keep your LDL level under 130. If you have heart disease or diabetes, you should keep your LDL level under 100.
  • High-density lipoprotein (HDL) cholesterol – This is the “good” type of cholesterol that helps keep cholesterol from building up in the arteries and lowers your risk for heart disease. An HDL cholesterol below 40 is a major risk factor for heart disease. An HDL level above 60 helps protect against heart disease.
  • Triglycerides (a type of fat in your blood) – You should try and keep this number under 150
 
Total Cholesterol Level Category
Less than 200 mg/dL Desirable
200 - 239 mg/dL Borderline high
240 mg/dL and above High
 
LDL Cholesterol Level LDL Cholesterol Category
Less than 100 mg/dL Optimal
100 - 129 mg/dL Near optimal/above optimal
130 - 159 mg/dL Borderline high
160 - 189 mg/dL High
190 - mg/dL and above Very high
 
HDL Cholesterol Level HDL Cholesterol Category
Less than 40 mg/dL A major risk factor for heart disease
40 - 59 mg/dL The higher, the better
60 mg/dL and above Considered protective against heart disease

What Affects Cholesterol Levels?

Many things affect the level of cholesterol in your blood – these are things you can do something about:

  • Weight – Being overweight is a risk factor for heart disease and it also tends to increase your cholesterol. Losing those extra pounds can help lower your LDL, total cholesterol and triglyceride levels, as well as raises your HDL level.
  • Diet – Eating too much food high in saturated fat, trans fats, and cholesterol raises the level of cholesterol in your blood. Reducing the amount of these fats in your diet helps lower your blood cholesterol level.
  • Physical activity – Regular physical activity can help lower LDL and raise HDL cholesterol levels, and helps you lose weight.

Things you cannot do anything about but that can affect cholesterol levels include:

  • Family history – High cholesterol can be inherited. Your genes influence how high your LDL level is by affecting how fast LDL is made and removed from the blood.
  • Age and sex – Before menopause, women usually have total cholesterol levels that are lower than those of men the same age. As women and men get older, their blood cholesterol levels rise until about 60 to 65 years of age. In women, menopause often causes an increase in their LDL level and a decrease in their HDL level. After the age of 50, women often have higher total cholesterol levels than men of the same age.

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Lifestyle Changes to Improve Your Cholesterol

A woman eating a healthy salad.There are a number of things you can do every day that can improve your cholesterol levels – and your overall health. Following a healthy diet and lifestyle can give you the edge in the fight against heart disease and stroke. Here are some tips on how you can take an active part.

Eat a Heart-Healthy Diet

Know Your Fats

Knowing which fats raise LDL cholesterol and which ones don't is the first step in lowering your risk of heart disease. In addition to the LDL produced naturally by your body, saturated fat, trans-fatty acids and dietary cholesterol can also raise blood cholesterol.

  • Limit total fat intake to less than 25–35% of your total daily calories. Less than 7% of daily calories should be from saturated fats.
  • Limit trans fat intake to less than 1 percent of total daily calories. The remaining fat should come from sources of monounsaturated and polyunsaturated fats such as nuts, seeds, fish and vegetable oils.
  • Eat less than 300 milligrams of dietary cholesterol per day.
  • Choose a diet rich in fruits, vegetables, whole-grain, high-fiber foods, and fat-free and low-fat dairy.
  • Use naturally occurring, unhydrogenated vegetable oils such as canola, safflower, sunflower or olive oil most often.
  • Look for processed foods made with unhydrogenated oil rather than partially hydrogenated or hydrogenated vegetable oils or saturated fat.
  • Use soft margarine as a substitute for butter, and choose soft margarines (liquid or tub varieties) over harder stick forms.
  • Look for ”0 g trans fat” on the Nutrition Facts label. French fries, doughnuts, cookies, crackers, muffins, pies and cakes are examples of foods that are high in trans fat.
  • Limit the saturated fat in your diet. If you don't eat a lot of saturated fat, you won't be consuming a lot of trans fat.
  • Limit commercially fried foods and baked goods made with shortening or partially hydrogenated vegetable oils. Not only are these foods very high in fat but are likely to also be high in trans fat.

Make Healthy Food Choices

  • Choose lean meats and poultry without skin and prepare them without added saturated and trans fats. You should eat no more than 6 ounces of cooked lean meat, poultry, fish or seafood a day. The leanest beef cuts usually include sirloin, chuck, loin and round. Choose “choice” or “select” grades, and choose lean or extra lean ground meats. Organ meats are very high in cholesterol. You should also cut back on processed meats which are high in saturated fat and sodium.
  • Eat at least two servings of fish each week. Fish can be fatty or lean, but it is still low in saturated fat. Prepare fish baked, broiled, grilled or boiled rather than breaded and fried.
  • Select fat-free, 1% fat and low-fat dairy products. Minimize your intake of whole-fat dairy products. Gradually switch to fat-free, low-fat or reduced-fat dairy products.
  • Cut back on foods high in dietary cholesterol. Try to eat less than 300 milligrams of cholesterol each day. Egg whites don’t contain cholesterol and are a good source of protein.
  • Cut back on beverages and foods with added sugars. Cut back on added sugars to lower your total calorie intake and help control your weight. These foods also tend to be low in vitamins and minerals, and the calories add up quickly. Examples of added sugars are sucrose, glucose, fructose, maltose, dextrose, corn syrups, high-fructose corn syrup, concentrated fruit juice and honey.
  • Choose and prepare foods with little or no salt. Foods low in salt lower your risk for high blood pressure and may help you control it. Aim to consume less than 2,300 mg of salt of sodium per day. Choose foods labeled “reduced-sodium” and limit high-sodium condiments and foods such as soy sauce, steak sauce, Worcestershire sauce, ketchup and mustard, flavored seasoning salts, pickles and olives. Replace salt with herbs and spices or use salt-free seasoning mixes.

    1/4 teaspoon salt = 600 milligrams (mg) sodium
    1/2 teaspoon salt = 1,200 mg sodium
    3/4 teaspoon salt = 1,800 mg sodium
    1 teaspoon salt = 2,300 mg sodium
    1 teaspoon baking soda = 1,000 mg sodium

  • Cholesterol, fiber, and oat bran. When regularly eaten as part of a diet low in saturated fat and cholesterol, soluble fiber has been shown to help lower blood cholesterol. You should eat at least 25-30 grams of dietary fiber - in both soluble and insoluble forms – every day.

Note: Good food sources of soluble fiber include oat bran, oatmeal, beans, peas, barley, citrus fruits, and strawberries. Foods high in insoluble fiber include whole-wheat breads, wheat cereals, wheat bran, cabbage, carrots, Brussels sprouts and cauliflower.

Read the Food Labels

Reading the labels will help you choose foods more wisely. Many foods have saturated fat or trans fat that can raise your cholesterol. Some may be high in sodium, which can increase your blood pressure. Read the labels and know what some of the key terms mean.

"Free" Has the least amount of a substance, such as salt free.
"Very Low" or "Low" Has a little more
"Reduced” or "Less" Always means the food has 25% less of a substance than the standard version of the food

Tips for Eating Out

You can eat out and eat healthy, too. Many restaurants offer delicious meals that are low in saturated fat, trans fat and cholesterol.

Don’t be shy about making special requests. Most foods on most menus will probably fit into a heart-healthy diet if prepared with low-fat ingredients and less salt. Ask your server if the kitchen can alter preparations to meet your needs, or call ahead before you choose your restaurant. If your food isn't prepared as you requested, send it back. Equally important is the portion size. Help control your weight by asking for smaller portions, sharing entrees with a companion, or putting half of your meal in a to-go box to enjoy another time.

Avoid Tobacco

A No Smoking signIf you smoke, your cholesterol level is one more good reason to quit. Smoking speeds up the process of hardening of the arteries and is a major risk factor for heart disease and stroke. Quitting smoking is lowers one’s risk of heart attack and stroke.

Get Moving

A man and woman jogging in a park.Physical inactivity is a major factor for heart disease. You should get at least 30 minutes of physical activity, preferably every day but at least more days than not. Regular physical activity affects blood cholesterol level by increasing the level of HDL (good) cholesterol. It can also help control other risk factors for heart disease: weight, diabetes and high blood pressure. You don’t have to join a structured exercise program to benefit from physical activity. Even mild activities, if done daily, can help. You can benefit from things like walking, gardening, housework or dancing.

  • If you have been inactive for a long time, are overweight, have a high risk of coronary heart disease and stroke, or some other chronic health problem, see your doctor for a medical evaluation before beginning a new physical activity program.
  • Don’t overdo it. Do physical activity at a level that is appropriate for your fitness level. You can slowly increase the duration and intensity of your activities as you become more fit. Over time, work up to at least 30 minutes of physical activity on most days of the week.

Note: If you are overweight, you can help lower your cholesterol and improve your health by losing just 10 percent of your weight.

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