Ornish Diet Best, USDA Food Pyramid Down the List for Improving Heart Health

Oct. 1, 2007 - The Department of Agriculture’s Food Pyramid needs repair, at least when it comes to diets that improve heart health, according to researchers who compared ten diet plans to see which one could best reduce the risk of cardiovascular disease, the major killer of senior citizens. The Pyramid plan came in sixth in this test with the leader being the Ornish diet plan, which is specifically targeted at protection from heart disease.

(Read more about the Ornish Diet Plan below news report.)

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Over the past three decades, the rising obesity epidemic has been accompanied by a proliferation of weight-loss plans. However, as this new study by researchers from the University of Massachusetts Medical School (UMMS) reveals, these weight-loss plans vary significantly in their ability to positively affect heart health.

In “A Dietary Quality Comparison of Popular Weight-Loss Plans,” published in the October issue of the Journal of the American Dietetic Association, several weight-loss plans significantly outperformed others in their ability to reduce the risk of cardiovascular disease.

Specifically, the investigators found that the Ornish, Weight Watchers High Carbohydrate and New Glucose Revolution plans scored highest when measured by the Alternate Healthy Eating Index (AHEI).

Proven to be a strong predictor of cardiovascular disease, the AHEI is a measure that isolates dietary components that are most strongly linked to cardiovascular disease risk reduction.

“Obviously, obesity is associated with an increased risk for cardiovascular disease,” said UMMS Assistant Professor of Medicine Yunsheng Ma, PhD, MPH, one of the study’s primary authors. “Optimal weight-loss plans should facilitate both weight loss and chronic disease prevention, specifically cardiovascular risk reduction.”

Choosing weight-loss plans based on their status on The New York Times bestseller list during the past five years, Dr. Ma and colleagues evaluated the dietary quality of each.

Weight Watchers and the 2005 USDA Food Guide Pyramid plan were included because they are the largest commercial weight loss plan and the current government recommendation, respectively.

Elements used to determine dietary quality included ratio of white to red meat, ratio of polyunsaturated fat to saturated fat, and quantities of fruit, vegetables, nuts, legumes, cereal fiber and trans fats, all of which are known to affect cardiovascular health.

Of a maximum 70 points, the AHEI scores from highest to lowest were:

   1. Ornish (64.6);
   2. Weight Watchers High Carbohydrate (57.4);
   3. New Glucose Revolution (57.2);
   4. South Beach/Phase 2 (50.7);
   5. Zone (49.8);
   6. 2005 USDA Food Guide Pyramid (48.7);
   7.Weight Watchers High Protein (47.3);
   8. Atkins/100g Carb (46);
   9. South Beach/Phase 3 (45.6) and
10. Atkins/45g Carb (42.3).

“The highest performing plans—Ornish, Weight Watchers High Carb and the New Glucose Revolution—fared well due to an emphasis on fruits and vegetables, higher whole grain composition and lower trans fats,” according to study co-author and UMass Memorial Medical Center registered dietitian Barbara Olendzki, RD, MPH, an instructor in medicine at UMMS.

“One of the unexpected findings is that the 2005 USDA Food Guide Pyramid, the current government recommendation, fared significantly worse than the New Glucose Revolution, Weight Watchers High Carbohydrate and Ornish plans,” added Ma.

“The USDA dietary guidelines were originally devised to prevent nutrient deficiencies and it's clear that we need to modify or rebuild the pyramid to look into cardiovascular disease prevention, as it is the leading cause of death and disability for Americans. Americans deserve a better dietary guideline and recommendation”.

“Patients can lose weight with most dietary plans in the short term, but whether the plan they choose maximizes cardiovascular risk reduction over the long term should also be a consideration for patients and health care providers,” concluded study co-author Sherry Pagoto, PhD, UMMS assistant professor of medicine and a clinical psychologist at the UMass Memorial Weight Center.

Editor’s Notes

This research was supported by an internal grant from the Diabetes Endocrinology Research Center at UMMS and the National Heart, Lung and Blood Institute.

The University of Massachusetts Medical School, one of the fastest growing academic health centers in the country, has built a reputation as a world-class research institution, consistently producing noteworthy advances in clinical and basic research. The Medical School attracts more than $174 million in research funding annually, 80 percent of which comes from federal funding sources. UMMS is the academic partner of UMass Memorial Health Care, the largest health care provider in Central Massachusetts. For more information, visit www.umassmed.edu.

About the Ornish Diet to Reverse Heart Disease - Wikipedia

The Ornish Diet is a somewhat popular diet that was developed by Dean Ornish M.D. in his book Dr. Dean Ornish's Program for Reversing Heart Disease. It is a diet that is specifically formulated to reverse heart disease but has recently been used as a weight-loss program. This vegetarian diet emphasizes low-fat, filling foods, including legumes and other high-fiber choices.

The Ornish Diet is a very strict one. It places very strict limitations on all foods containing more than very slight amounts of cholesterol and saturated fat. Meat and fish are not allowed, although nonfat dairy products and egg whites are permitted in limited quantities. This diet promotes complex carbohydrates (fruit, grains, etc.) and limits simple ones (sugars, honey, alcohol.) The most controversial part of the diet is its prohibition on nuts and fish, which some researchers claim actually protect the heart. The Ornish diet is 10% fat, 20% protein, and 70% carbohydrates. According to his book "Eat More, Weigh Less," the typical American diet is 40% fat, 20% protein and 40% carbohydrates. To complement his suggested diet, Dr. Ornish advocates physical activity and meditation.

>> Read more at Wikipedia

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