Several randomized trials have examined the efficacy of low carbohydrate diets in terms of weight loss and improvement of metabolic parameters compared with conventional, low fat, low calorie diets. Multiple randomized controlled trials demonstrate low carbohydrate dieters lose significantly more weight at 6 months versus conventional dieters [18-20]. At 6 months, low carbohydrate dieters also experience greater decreases in triglyceride levels, serum fasting glucose and body fat than low fat dieters [19, 20]. At 12 months, however, there is no significant difference in weight loss between the two groups as low-carbohydrate dieters regain some weight while conventional dieters maintain a consistent weight level .
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