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February 22, 2006 | Issue 53 |
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An Apple a Day Really Does Keep the Doctor Away
As children, many of us were told “an apple a day keeps the doctor away.” Mom and Dad were oh-so right. Recently, many studies have provided scientific evidence that apples seem particularly powerful in fending off various diseases.
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LOW-FAT DIET STUDY
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The latest research, from Cornell University, found that rat brain cells exposed to quercetin, an antioxidant in apples, resisted damage much better than cells not treated with quercetin.(1) Other foods high in quercetin include onions, blueberries, and cranberries.
Antioxidants are compounds that counteract the damaging effects of free radicals. Free radicals, products of normal cell processes, can wreak havoc in their quest to hook up with other molecules, which could be lipids, protein, or DNA. The free radicals’ actions can damage the molecules they react with, sometimes destroying them. This process is known as oxidative stress or oxidative damage.
Humans, and all animals, have complex antioxidant defense systems, but they are not perfect in fending off stress; oxidative damage will occur. Cancer and cardiovascular disease are thought to be in part the results of oxidative stress, so foods like apples and other fruits and vegetables, rich in antioxidants, may be especially helpful in warding off these diseases.
Several studies have found an association between apple consumption and reduced risk of cancer, especially lung cancer. In the Nurses Health Study, involving more than 77,000 women in the United States, those who consumed at least one serving per day of apples and/or pears had a reduced risk of lung cancer.(2) In a study in Hawaii, apple and onion intake was linked with a reduced risk of lung cancer in both men and women.(3)
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Copyright 2006 Pritikin Longevity Center & Spa. All rights reserved.
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Pritikin Perspective - Healthy Living Made Easier
Pritikin Perspective is a publication for Alumni of the Pritikin Longevity Center. It is dedicated to helping people make healthy changes in their lives. The articles in this publication should not be considered specific medical advice, as each individual circumstance is different. You are strongly encouraged to seek medical advice before beginning a program of diet and exercise.
Editor/Writer: Eugenia Killoran.
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