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You can enjoy the pleasures of eating without sacrificing good
health. That’s a point that nutrition experts have always
stressed, and it’s been confirmed by recent research.
Even if you’re watching your weight, your cholesterol and
your blood pressure, foods such as olive oil, nuts, tea, red wine
and even chocolate are not only okay but can be good for you–as
long as you eat them in moderate amounts along with a balanced
diet.
The media makes reference to “the French paradox,”
but if there is a paradox it includes a wider area of Mediterranean
countries where hearty meals–rich in olive oil, garlic,
tomatoes and other fresh vegetables–are the norm, usually
washed down with equally robust wines. These countries generally
have lower rates of heart disease than the United States.
If you’re into the morality of foods, olive oil may look
and taste sinfully good. It’s a monounsaturated fat, however,
and much less likely to clog your arteries than saturated fats
or cholesterol. It’s also better than most polyunsaturated
margarines, and studies have indicated that a diet with moderate
levels of olive oil, nut oil or other monounsaturated fats can
actually lower levels of LDL cholesterol more effectively than
a low-fat diet.
Nuts are another paradox. Whether you’re talking about tree nuts
such as walnuts, pecans, hazelnuts and macadamias or peanuts (which are
really legumes), nuts are high in fat and calories. Many weight loss programs
advise participants to eliminate nuts from their diet.
Nuts for Nutrition
Even with roasted nuts, however, nearly all of the fat is monounsaturated,
and nuts contain abundant protein plus many vitamins and minerals.
A study of Seventh Day Adventists, who follow a vegetarian diet, found
that those who ate nuts at least five times a week had a 50 percent reduced
risk of dying from heart disease, compared to those who rarely ate nuts.
A recent comprehensive review, including five large epidemiologic studies
and 11 clinical studies, found that persons eating one ounce of nuts more
than five times a week had a 25 to 39 percent reduced risk of heart disease.
“Nuts are a source of plant protein dietary fiber, antioxidant vitamins,
minerals, and numerous bioactive substances that may have health benefits,”
wrote the author, Penny Kris-Etherton of Penn State University.
Because nuts are relatively high in calories, nutritionists advise moderation.
One study, however, found that nuts could be substituted for other snacks
such as pretzels in a successful weight loss program.
Moderation is also the operative word for red wine–the major component
of the French paradox. One or two drinks a day may keep the doctor away;
excessive amounts can create health as well as other problems.
Red wine is beneficial primarily because the seeds and skins of red grapes
are rich in biologically active substances called flavonoids that are
extracted during the wine-making process. Studies have demonstrated that
these flavonoids benefit the heart and cardiovascular system in at least
three specific ways: 1) They increase levels of HDL (good) cholesterol.
2) They have an antioxidant action that reduces the buildup of LDL (bad)
cholesterol in blood vessels. And (3) they reduce the clotting tendency
of blood, thereby reducing the risk of both heart attack and stroke.
You can’t get the same benefits from eating red grapes; it’s
the pressing of the skins and seeds that extracts most of the flavonoids,
say experts. Studies have demonstrated, however, that you can get many
of these benefits from drinking purple grape juice, particularly that
made from the skins, seeds and stems of Concord grapes.
Researchers at the University of Wisconsin found that men and women who
drank 18 to 20 ounces a day of purple grape juice for two weeks had significantly
better blood flow through their arteries, with less stickiness of platelets.
One study is being conducted at this time to see if purple grape juice
can improve erections in men diagnosed with erectile dysfunction (ED).
Flavonoids are also associated with the health benefits attributed to
coffee, tea and chocolate. There are more than 4,000 flavonoids–compounds
found only in plants. All flavonoids have antioxidant qualities similar
to those of vitamins C and E but perhaps even more potent.
Often concentrated in the leaves and skin of fruit, flavonoids are abundant
in highly colored and flavored foods such as blueberries, onions, cherries
and the peel of citrus fruits. Some flavonoids are believed to be effective
at relieving inflammation and arthritis pain; others may have an anti-cancer
effect.
Both black and green tea are rich in flavonoids that are believed to
have both cardiovascular and anti-cancer benefits. Several studies have
demonstrated a cholesterol-lowering effect for tea. And Dutch researchers
found that persons drinking four or more cups of tea a day had 69 percent
less buildup of fatty deposits in their arteries.
Laboratory studies on animals have suggested that tea may be helpful in
preventing skin and lung cancers and reducing the risk of bladder and
digestive tract cancers. One trial currently underway at the Mayo Clinic
is looking at the possible effect of green tea in treating prostate cancer.
Life by Chocolate
Restaurant menus often feature desserts called “death by chocolate.”
But how about good health through chocolate?
Recent studies found high levels of antioxidant flavonoids and at least
short-term anti-clotting activity in some chocolate products.
Generally, the darker the chocolate, the higher the level of flavonoids.
A 3.5 ounce serving (equivalent to two candy bars) of dark chocolate contains
53.5 milligrams of flavonoids, but the same amount of milk chocolate has
only 15.9 mg, and a cup of hot chocolate about 8 mg. An eight-ounce cup
of black tea, by comparison, has 37 mg.
Moderation is an important consideration for any food included in your
diet–and particularly for chocolate, which is high in calories,
sugar and saturated fats.
Reaching out for highly colored, highly flavored, highly pleasurable
foods will add excitement–and health benefits–to your diet.
And when you have room for an after dinner sweet, chocolate is a good
choice.
REFERENCES:
“Almonds,” Men’s Fitness, March,
2002.
“Chocolate: Your Heart’s Delight,” Mayo Clinic Health
Letter, February, 2001.
“Color Me Purple,” Internal Medicine Alert, November 15, 2001.
Jenny Blythe Dundee and Samena Chaudhry, “Flavonoids Found in Chocolate
May Be Good for You,” Student BMJ, October, 2001.
“Flavonoids, the Next New Thing?” Harvard Health Letter, December,
2000.
“Grape Juice and Platelet Aggregation,” Journal of the American
Dietetic Association, July, 2000.
Robert M. Hackman, “Flavonoids and the French Paradox,” USA
Today Magazine, September, 1998.
Sharon L. Hale and Robert A. Kloner, “Effects of Resveratrol, a
Flavinoid Found in Red Wine, on Infarct Size in an Experimental Model
of Ischemia/Reperfusion,” Journal of Studies on Alcohol, November,
2001.
C.W. Henderson, “ A Little Chocolate for a Healthy Heart,”
Heart Disease Weekly, February 18, 2001.
Penny Kris-Etherton, et al, Nutrition Reviews, May 8, 2001.
Simon C. Langley-Evans, “Consumption of Black Tea Elicits an Increase
in Plasma Antioxidant Potential in Humans,” International Journal
of Food Sciences and Nutrition, September, 2000.
Reed Mangels, “Vegetarian Journal’s Guide to Nuts and Nut
Butters,” Vegetarian Journal, November-December, 2001.
Loic Le Marchand, et al, “Intake of Flavonoids and Lung Cancer,”
Journal of the National Cancer Institute, January 19, 2000.
Wanda A. Morgan, et al, “Pecans Lower Low-Density Lipotrotein Cholesterol
in People with Normal Lipid Levels,” Journal of the American Dietetic
Association, March, 2000.
James D. O’Reilly, et al, “Consumption of Flavonoids in Onions
and Black Tea: Lack of Effect on F2-Isoprostanes and Autoantibodies to
Oxidized LDL in Healthy Humans,” American Journal of Clinical Nutrition,
June, 2001.
“Purple Grapes, Platelet Function and Nitric Oxide Release,”
Nutrition Research Newsletter, July, 2001.
Robert J. Nijveldt, et al, “Flavonoids: A Review of Probable Mechanisms
of Action and Potential Applications,” Journal of clinical Nutrition,
October, 2001.
“Nuts Cut Coronary Heart Disease Risk,” Obesity, Fitness &
Wellness Week, June 9, 2001.
“Tea for You? Possible Health Benefits Are Being Studied,”
Mayo Clinic Health Letter, September, 2001.
Ying Wan, et al, “Effects of Cocoa Powder and Dark Chocolate on
LDL, Oxidative susceptibility and Prostaglandin Concentrations in Humans,”
American Journal of Clinical Nutrition, November, 2001.
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