Friday, December 5, 2014

5 foods that fight high cholesterol

December 4, 2014

5 foods that fight high cholesterol

It's easy to eat your way to an alarmingly high cholesterol level. The reverse is true too — changing what you eat can lower your cholesterol and improve the armada of fats floating through your bloodstream. Fresh fruits and vegetables, whole grains, and "good fats" are all part of a heart-healthy diet. But some foods are particularly good at helping bring down cholesterol.

How? Some cholesterol-lowering foods deliver a good dose of soluble fiber, which binds cholesterol and its precursors in the digestive system and drags them out of the body before they get into circulation. Others provide polyunsaturated fats, which directly lower LDL. And those with plant sterols and stanols keep the body from absorbing cholesterol. Here are 5 of those foods:

Oats. An easy way to start lowering cholesterol is to choose oatmeal or a cold oat-based cereal like Cheerios for breakfast. It gives you 1 to 2 grams of soluble fiber. Add a banana or some strawberries for another half-gram.

Beans. Beans are especially rich in soluble fiber. They also take a while for the body to digest, meaning you feel full for longer after a meal. That's one reason beans are a useful food for folks trying to lose weight. With so many choices — from navy and kidney beans to lentils, garbanzos, black-eyed peas, and beyond — and so many ways to prepare them, beans are a very versatile food.

Nuts. A bushel of studies shows that eating almonds, walnuts, peanuts, and other nuts is good for the heart. Eating 2 ounces of nuts a day can slightly lower LDL, on the order of 5%. Nuts have additional nutrients that protect the heart in other ways.

Foods fortified with sterols and stanols. Sterols and stanols extracted from plants gum up the body's ability to absorb cholesterol from food. Companies are adding them to foods ranging from margarine and granola bars to orange juice and chocolate. They're also available as supplements. Getting 2 grams of plant sterols or stanols a day can lower LDL cholesterol by about 10%.

Fatty fish. Eating fish two or three times a week can lower LDL in two ways: by replacing meat, which has LDL-boosting saturated fats, and by delivering LDL-lowering omega-3 fats. Omega-3s reduce triglycerides in the bloodstream and also protect the heart by helping prevent the onset of abnormal heart rhythms.

But stay away from…

As you consider eating more of the foods that can help dial down cholesterol, keep in mind that avoiding certain foods can also improve your results. To keep cholesterol levels where you want them to be, limit intake of:

Saturated fats. The saturated fats found in red meat, milk and other dairy foods, and coconut and palm oils directly boost LDL. So one way to lower your LDL is to cut back on saturated fat. Try substituting extra-lean ground beef for regular; low-fat or skim milk for whole milk; olive oil or a vegetable-oil margarine for butter; baked fish or chicken for fried.

Trans fats. Trans fats are a byproduct of the chemical reaction that turns liquid vegetable oil into solid margarine or shortening and that prevents liquid vegetable oils from turning rancid. Trans fats boost LDL as much as saturated fats do. They also lower protective HDL, rev up inflammation, and increase the tendency for blood clots to form inside blood vessels. Although trans fats were once ubiquitous in prepared foods, many companies now use trans-fat-free alternatives. Some restaurants and fast-food chains have yet to make the switch.

For more ways to keep your heart healthy and conquer high cholesterol, buy Managing Your Cholesterol from Harvard Medical School.

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News and Views from the Harvard Health Blog

Vitamin D testing not recommended for most people

Over the past decade, a barrage of reports linking low vitamin D levels to cancer, heart disease, diabetes, and a host of other ills led many doctors to routinely test vitamin D levels in their healthy patients. But there is no good reason to do that, according to a new recommendation from the U.S. Preventive Services Task Force.

4 ways to eat your way to lower cholesterol

Many people can reduce cholesterol levels simply by changing what they eat. For example, if you are a fan of cheeseburgers, eating less meat (and leaner cuts) and more vegetables, fruits, and whole grains can lower your total cholesterol by 25% or more. Cutting back on saturated fat (found in meat and dairy products) and trans fat (partially hydrogenated oils) can reduce cholesterol by 5% to 10%.

Here are four steps for using your diet to lower your cholesterol.

Stick with unsaturated fats and avoid saturated and trans fats. Most vegetable fats (oils) are made up of unsaturated fats that are healthy for your heart. Foods that contain healthy fats include oily fish, nuts, seeds, and some vegetables. At the same time, limit your intake of foods high in saturated fat, which is found many meat and dairy products, and stay away from trans fats. These include any foods made with "partially hydrogenated vegetable oils."

Get more soluble fiber. Eat more soluble fiber, such as that found in oatmeal and fruits. This type of fiber can significantly lower blood cholesterol levels when eaten as part of a healthy-fat diet.

Include plant sterols and stanols in your diet. These naturally occurring plant compounds are similar in structure to cholesterol. When you eat them, they help limit the amount of cholesterol your body can absorb. Plant sterols and stanols are found in an increasing number of food products such as spreads, juices, and yogurts.

Find the diet that works foryou. When a friend or relative tells you how much his or her cholesterol level dropped after trying a particular diet, you may be tempted to try it yourself. If you do and after a few months you discover that you’re not getting the same benefits, you may need to chalk it up to genetic and physiological differences. There is no one-size-fits-all diet for cholesterol control. You may need to try several approaches to find one that works for you.

Although diet can be a simple and powerful way to improve cholesterol levels, it plays a bigger role for some people than for others. If your doctor suggests a lower-fat, lower-cholesterol diet, and despite your best efforts it isn’t working, you may need a different kind of diet, or medication, or both, to bring cholesterol down.

For more on lowering cholesterol, buy Managing Your Cholesterol, a Special Health Report from Harvard Medical School.

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Managing Your Cholesterol

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