Weight Loss Information

Weight Loss Success -- The Most Important Determinant


Adherence to diet for one year, not the specific diet plan, is the most important determinant of successful weight loss. According to the results of a randomized trial published in the January 2005 issue of JAMA. When comparing Atkins, Ornish, Weight Watchers, and Zone diets, the author recommends the "low fad" approach.

The Low Fad Approach

Successful weight loss is best achieved by following the low fad approach. The low fad approach to losing weight involves moderate reductions in caloric intake with increased physical activity. There is nothing "fad" about this approach and is supported by a few studies.

The fact that the low fad approach is backed by scientific evidence is key...the fad diets currently in the market have very little credible evidence supporting their claims.

"The scarcity of data addressing the health effects of popular diets is an important public health concern, especially since patients and physicians are interested in using popular diets as individualized eating strategies for disease prevention," write Michael L. Dansinger, MD, a Preventative Medicine specialist from Boston, Massachusetts.

Dr. Dansinger goes on to say, "Some plans minimize carbohydrate intake without fat restriction (eg, Atkins diet), many modulate macronutrient balance and glycemic load (eg, Zone diet), and others restrict fat (eg, Ornish diet)."

So, besides the lack of evidence backing the claims made by fad diets, there is no consistency from one diet to the next within the same category of diet type. This makes it extremely difficult to study the fad diets and measure the effects on your health, let alone your chances for successful weight loss.

But there's hope for dieters...the low fad approach or "Low Fad Diets."

Successful Weight Loss...The Evidence Supporting Low Fad Diets

At a single academic medical center, 160 overweight or obese adults were randomized to the Atkins, Zone, Weight Watchers (calorie restriction), or Ornish diet. The total time of the study was one year. The age range was 22 to 72 years, mean body mass index (BMI) was 35 kg/m2 (range, 27-42 kg/m2), and all participants had high blood pressure, high cholesterol, or diabetes.

After two months of maximum effort, participants controlled their degree of adherence to the diet. Primary outcomes were changes in baseline weight and cardiac risk factors at one year, and dietary adherence rates based on self-report.

The percent of subjects who were able to finish the study and stick with their diets for one year were 53% for Atkins, 65% for The Zone, 65% for Weight Watchers, and 50% for Ornish. Participants who discontinued the study were assumed to have no change from baseline in their weight.

At one year, mean weight loss was 6-7 pounds for Atkins, 6-9 pounds for The Zone, 6-8 pounds for Weight Watchers, and 6-10 pounds for The Ornish Diet.

Compared to subjects that quit the study before one year, the subjects that made it to one year experienced greater weight loss. In each group, approximately 25% of the initial participants maintained a one-year weight reduction of more than 5% of initial body weight, and approximately 10% of participants lost more than 10% of body weight.

The amount of weight loss was associated with the self-reported level of dietary adherence. Basically, the longer a subject stayed on the diet that they were randomized to, the more weight loss they experienced. However, the type of diet they were on had no real effect on the amount of weight loss. The type of diet also had no effect on dropping their blood pressure or lowering their cholesterol level.

Successful Weight Loss Conclusion

The author concluded, "Each popular diet modestly reduced body weight and several cardiac risk factors at one year." Overall, dietary adherence rates were low, although increased adherence was associated with greater weight loss and cardiac risk factor reductions for each diet group.

The study limitations include the inability to identify a "best diet" and the limited ability to exclude long-term safety risks.

Lastly, the author stated, "One way to improve dietary adherence rates may be to use a broad spectrum of diet options, to better match individual food preferences, lifestyles, and cardiovascular risk profiles." I have always supported the idea of more personalized weight loss plans.

The General Clinical Research Center via the National Center for Research Resources of the National Institutes of Health, the U.S. Department of Agriculture, and the Boston Obesity Nutrition Research Center supported this study on successful weight loss.

To Healthy Living!

Michael A. Smith, MD
Chief Medical Consultant
Diet Basics Website

The complete study can be found at JAMA. 2005;293:43-53, 96-97.

Dr. Smith is the Chief Medical Consultant for Diet Basics, a content rich weight loss web site. He is dedicated to the education of all dieters. Please visit his site at Diet Basics.


MORE RESOURCES:

Weight Loss Hypnosis: Lose Weight While Sleeping
CBS 4, FL - 14 hours ago
MIAMI (CBS4) ― Snooze and loose: that's right! There is a way to lose weight while you sleep and now, people say it's taking all the work out of dieting. ...


Weight Loss
TheStorygroup.com, GA - 8 hours ago
Try Our Wide Selection of Weight Loss Programs, Diet Pills or Fat Burner Plans Now! Don't underestimate low level of depression. ...


PEERtrainer Launches 'Tip Of The Day' Weight Loss Coaching Newsletter
PR Web (press release), WA - 11 hours ago
Subjects covered include weight loss, nutrition, fitness, preventive health and motivation. New York, New York (PRWEB) November 22, 2008 -- PEERtrainer has ...


Current World News

Weight-loss surgery bodes well for pregnancy
Los Angeles Times, CA - Nov 19, 2008
Now researchers have found that obese women who undergo weight-loss surgery before becoming pregnant are less likely to have pregnancy-related health ...
Weight-loss surgery helps with pregnancy: study Reuters
Some Pregnancy-Related Complications Minimized for Women Who Have ... MarketWatch
Go for pre-pregnancy weight loss surgery Times of India
TheMedGuru - U.S. News & World Report
all 58 news articles


LA Weight Loss Announces Closing of Eau Claire Facility
WQOW TV News 18, Eau Claire - Nov 21, 2008
LA Weight Loss just announced its closing in Eau Claire next Wednesday. When News 18 contacted the corporate offices, they sent us this statement: "We wish ...


Weight Loss Blog: Getting Started
TheDenverChannel.com, CO - Nov 20, 2008
I keep hearing Oprah Winfrey in my head saying if there was a magic pill to weight loss, she'd have it. If the woman who can afford personal trainers and ...


Weight loss can cause excess, flabby skin
Tulsa World, OK - Nov 21, 2008
Dear Reader: First, I would like to congratulate your granddaughter on her astonishing weight loss. Skin is very stretchy and often reshapes as weight is ...


Weight Loss in Progress
ireport - 18 hours ago
I have slowed the weight loss down, but have lost 60 lbs since the 3rd week of June. My goal: To lose a total of 120 lbs to get to my ideal weight, ...


Weight Loss Surgery Helps Obese Women Have Healthier Babies
New York Times, United States - Nov 19, 2008
By RONI CARYN RABIN Women who become pregnant after weight-loss surgery have easier pregnancies and healthier babies than do obese women who become pregnant ...


That Happened!

Weight-loss surgery bodes well for pregnancy
That Happened!, New York - Nov 20, 2008
New York - Researchers have found that weight-loss surgery bodes well for pregnancy. They found that women who had weight loss surgery before becoming ...

Weight-Loss - Google News

home | site map
© 2006