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New Study Reinforces
Dairy's Value in Reduced-Calorie Diet
Researchers Found that Adults in Year-Long Study
Lost Weight with Dairy
ROSEMONT, Ill., Aug. 29 /PRNewswire/ -- You don't
need to cut dairy from your diet to achieve weight loss
success, suggests a new study published in the August
issue of Obesity Research.
Researchers at the Mayo Clinic found that obese
adults can include up to 4 servings of dairy foods per
day in a reduced-calorie diet, combined with moderate
exercise, and still lose a significant amount of weight
and body fat.
This new randomized clinical trial compared the
weight-loss results of 72 obese adults following three
different reduced-calorie diets: a "high-dairy" diet
that included 4 servings of dairy foods (milk, yogurt or
cheese) each day; a "high-dairy/high fiber/low glycemic
index" diet that included 4 servings of dairy each day;
and a "moderate-dairy" or standard diet that included 2
servings of dairy foods each day.
After nearly one year (48 weeks), the participants in
all three groups experienced significant weight loss and
body fat loss -- providing further evidence that dieters
don't need to cut dairy from their diet to lose weight
successfully.
While all groups lost similar amounts of weight and
body fat, the participants in the high-dairy groups who
most closely followed the prescribed diet and exercise
plan also consumed 4 daily servings of dairy and about
100 to 150 more calories each day. Even with the higher
calorie intake, they still lost the same amount of
weight as the dieters who consumed 2 servings of dairy a
day and fewer calories.
Previously published clinical trials have found that
overweight and obese adults who consumed 3 servings of
dairy each day were able to lose twice as much weight
and fat as those on low-dairy diets (1 serving or less),
when the groups had similar reductions in calories.
Additionally, numerous population- based studies have
shown a connection between a diet adequate in calcium
and lower body weight.
"These new findings are important to help us gain
further information about the dairy/weight loss
connection, which has been reported in several clinical
studies," said co-author Michael Zemel, Ph.D., professor
of nutrition and director of the Nutrition Institute at
the University of Tennessee. "On the whole, research
shows that when comparing groups that have similar
calorie reduction, those who consume adequate dairy see
better results than those who don't."
Past studies indicate that the weight loss effect may
be the strongest when dairy and calcium intake is
increased from inadequate (l serving or less) to
adequate levels, or 3 servings each day. The effect
appears to be more modest when increasing dairy intake
from moderate levels -- or about 2 servings a day -- to
higher levels.
"It's not surprising that the weight-loss benefit of
dairy was less apparent in this study since the
methodology explored 'moderate' vs. 'high' dairy
consumption instead of 'inadequate' vs. 'adequate' dairy
consumption," explained Zemel.
The Dietary Guidelines recommend 3 servings of milk
and milk products daily, yet most Americans are only
getting half of that amount. "The evolving science
showing that dairy intake can increase weight loss in
the context of a reduced-calorie diet is just one more
reason for Americans to get their 3-A- Day of Dairy,"
said Stephanie Smith, RD, MS, National Dairy Council.
Because dairy products naturally contain calcium,
protein and other essential nutrients, getting three
servings each day improves the nutritional quality of
the diet, whether you are dieting or not.
For more information on the nutritional benefits of
dairy foods, visit
http://www.nationaldairycouncil.org/ . In addition,
delicious recipes and tips on how to get 3-A-Day of
Dairy are available at
http://www.3aday.org/ .
The American Dairy Association/National Dairy Council
(ADA/NDC) is managed by Dairy Management, Inc., the
nonprofit domestic and international planning and
management organization responsible for increasing
demand for U.S.- produced dairy products on behalf of
America's dairy farmers.
Source: Thompson WG, Holdman NR, Janzow DJ, Slezak JM,
Morris KL, Zemel MB. Effect of energy-reduced diets high
in dairy products and fiber on weight loss in obese
adults. Obesity Research. 2005; 14: 1344-53.
NDC Media Hotline
312-240-2880
Source: National Dairy
Council
CONTACT: NDC Media Hotline, +1-312-240-2880
Web site:
http://www.nationaldairycouncil.org/
http://www.3aday.org/
Additional Resource:
DIET
FOR A PAIN-FREE LIFE, McIlwain, HH & Bruce, DF, Marlowe/Avalon, NY, in press,
December 2006
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