Thursday, 26 March 2009

Calories, Protein, Fat, Carbs and Weight Loss ... or the Lack of It!

A recent study was reported in the New England Journal of Medicine, which apparently ended the argument about the differences in levels of success between popular diet plans. In actual fact this is one of many studies reporting on the limited success of 'dieting for weight loss' plans.

This study followed 811 overweight subjects who were randomly split into four groups assigned to follow a reduced calorie diet. Each of the four diet plans cut around 750 calories from the normal diet. The targeted percentages of energy derived from protein, carbs and fats in the four diets were:


The diets were made up to allow the research team to compare low fat versus high fat and average protein versus high protein and the comparison of highest and lowest carb content. All participants were offered individual and group counselling instructions for the two years of the study.

This is what they found:

· After 6 months, participants assigned to each diet had lost an average of 13 pounds (6 kg), which represented 7% of their initial weight.
· After 12 months, all groups, on average, slowly regained body weight.
· After the two years was complete, each group had lost – and regained – roughly the same amount of weight, regardless of the group.
· 645 participants (80%), completed the two year trial (that is very high), with an average weight loss of 8.8 pounds (4Kg).
· Despite the modest overall losses, 14 to 15% of the participants had a reduction of at least 10% of their initial body weight.
· 31 to 37% of the participants had lost at least 5% of their initial body weight.
· Just 2 to 4% had lost 44 pounds (20Kg) or more.
· Only 185 of the participants (23%) continued to lose weight from 6 months to 2 years.
· By 2 years, in those assigned to a diet with 20% fat and those assigned to a diet with 40% fat the average weight loss was the same (7.3 pounds, 3.3 kg for both groups).
· At the end of the two years, weight loss remained similar in those who were assigned to a low protein diet (15%) vs those assigned to a high protein diet (25%) (6.6 pounds and 8 pounds or 3.0 and 3.6 kg, respectively).
· After two years, those assigned to a diet with 65% carbohydrates and those assigned to a diet with 35% carbohydrates had losses of 6.4 pounds and 7.5 pounds or 2.9 and 3.4 kg, respectively.
· Diminished adherence occurred between 6 months and 2 years in the trial, with some of the participants reverting partly to their old eating habits.
· Satiety, hunger, satisfaction with the diet, and attendance at group sessions were similar for all diets.
· The diets generally improved lipid-related risk factors and fasting insulin levels.

So the worthy points of discussion are:

The diets were much the same in pure weight loss terms. The weight loss profile over time was much the same for each group.

Dr Frank Sacks, lead researcher said:


The effect of any particular diet group is minuscule, but the effect of individual behavior is humongous. We had some people losing 50 pounds and some people gaining five pounds. That’s what we don’t have a clue about. I think in the future, researchers should focus less on the actual diet but on finding what is really the biggest governor of success in these individuals.


The key factor in Sacks’ opinion was that researchers need to find what it is that governs success in individual cases. He confessed that as an expert in the field of obesity research he did not 'have a clue’ about the factors governing success.

That is where Slimmer Secrets have an unquestionable edge.

Having studied success strategies in individuals and NOT diets and all the surrounding hullabaloo associated with them, Slimmer Secrets can teach you the principles of success, not how to be really strict with yourself and attempt to stick to a rigid eating plan. Simplicity rules.


Thanks for reading,


Take Care


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