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Zone Diet
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News & Research:
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Ornish: Why
Atkins Still Doesn't Beat Low-Fat Diet - Newsweek, 7/16/08 -
"A new study comparing the Atkins diet, a
Mediterranean diet and a low-fat diet published on July 17 in The New
England Journal of Medicine (NEJM), is likely to inspire headlines saying
that the Atkins diet is better for your waistline and your health than a
low-fat diet ... I believe this study is extremely flawed. Here's why: ...
funded in part by the Atkins Foundation ... quality of data in this study
..."
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Researchers Nix Low-carb Diet - Science Daily, 12/17/07 -
"The term used to describe diets that produce this
biological effect is ketogenic; hence, Atkins is a ketogenic,
low-carbohydrate (KLC) diet, and the Zone diet is considered a nonketogenic,
low-carbohydrate (NLC) diet ... the ketogenic diet may increase bone loss
because of an increase in acid in the body and not enough intake of
alkalizing minerals, such as potassium, to neutralize this effect. In
addition, a higher percentage of calcium was found in the urine of those on
the KLC diet, leading the researchers to believe that the bones are
“leaching” calcium ... the reduction in fat loss and weight loss was about
the same for both diets over a six-week trial. In addition, body mass index
was significantly lower after six weeks in both diet groups. However, those
following the KLC diet experienced a greater increase in LDL cholesterol
than those following the NLC diet"
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Consumer Reports Rates Diet Plans - WebMD, 5/9/05 -
"Weight Watchers got the highest rating. On the 1 to 5
rating scale -- where 5 is best and 1 is worst -- Weight Watchers scored a
4"
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What’s the Best Diet? -
Dr. Weil, 6/11/04
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Four Popular Diets All Good for Weight Loss But Not Equal for Reducing Heart
Disease Risk - Doctor's Guide, 11/10/03 -
"Patients were evenly assigned to the Atkins diet
(low carbohydrates), Zone (moderate carbohydrates), Ornish (low-fat
vegetarian), or Weight Watchers (moderate fat) ... the heart disease risk
score is based on the HDL/LDL ratio, and the "Ornish diet does not increase
HDL, while the other diets do achieve significant increases in HDL,""
- I put the results in table form:
| |
At 12 months: |
| |
Weight
decrease |
Framingham
risk score decrease |
Insulin level decrease |
LDL decrease |
HDL increase |
% Completed study |
| Atkins |
3.9% |
12.3% |
7.7% |
8.6% |
15.4% |
52% |
| Zone |
4.6% |
10.5% |
16.5% |
6.7% |
14.6% |
65% |
| Ornish |
6.2% |
6.6% |
19.9% |
16.7% |
2.2% |
50% |
| Weight W. |
4.5% |
14.7% |
8.8% |
7.7% |
18.5% |
65% |
- 4 Popular Diets
Heart Healthy - WebMD, 11/10/03 -
"the heart disease risk score is based on the ratio
between LDL cholesterol and HDL "good" cholesterol
... The Atkins and
Zone diets increased HDL by 15%, while Weight Watchers posted an 18.5%
gain. But the Ornish diet increased HDL by
just 2.2%"
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Improved Glucose Response with High-protein Diet in Individuals with Type 2
Diabetes - Doctor's Guide, 10/16/03 -
"either a control diet designed according to the
recommendations of the American Diabetes Association
(protein:carbohydrate:fat, 15:55:30) or a high-protein diet (30:40:30) for a
period of 5 weeks ... fasting glucose concentration was consistently lower
after the high-protein diet, with no significant change in body weight. The
mean 24-hour integrated glucose area responses (with fasting glucose
concentration as baseline) were 34.1 +/- 7.2 mmol x h/L and 21.0 +/- 4.2
mmol x h/L after the control and high-protein diets, respectively, revealing
a 40% decrease with the high-protein diet"
- High-Protein Diet
Helpful in Type 2 Diabetes - Medscape, 10/6/03 -
"The ratio of protein to carbohydrate to fat was
30:40:30 in the high-protein diet and 15:55:30 in the control diet ... there
was a 40% decrease in the mean 24-hour integrated glucose area response
after the high-protein diet. Patients on the high-protein diet also fared
better in terms of decrease in glycated hemoglobin ... longer-term studies
are necessary to determine the total magnitude of response, possible adverse
effects, and the long-term acceptability of the diet"
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