They were made to follow one of four different diets (including low carbohydrate, low-fat and low-animal protein diets) in the protocol. These diets brought about calorie deficits through varying combination of fat, carbohydrates and protein. Each plan however, resulted in an average of 750 calories deficit as compared to the participants' normal diets.
At the end of the trial it was seen that 14 to 15 percent of the participants had a reduction of at least 10 percent of their initial body weight. This was irrespective of the type of diet they had followed. Researchers also observed that factors like satiety, hunger, satisfaction with the diet, and attendance at group counseling sessions were similar for all diets. All diets seemed to improve lipid-related risk factors and fasting insulin levels. Researchers therefore concluded that if calories `in' are lesser than the calories `out' weight loss occurs. Which macronutrient has brought about the caloric reduction doesn't matter!
Dr. Frank M. Sacks, the study's lead author and professor of cardiovascular disease prevention at the Harvard School of Public Health said "It gives people lots of flexibility to pick a diet that they can stick with."
Very true, indeed, so let the discussion move forward in the right direction.
Team Dietitian, NutritionVista.com
References **
Comparison of Weight-Loss Diets with Different Compositions of Fat, Protein, and Carbohydrates
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Weight-Loss Diets for the Prevention and Treatment of Obesity
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