Primary, secondary, and tertiary sources may all be appropriately used, if (1) they are used without engaging in original research or synthesis and (2) if in the event of conflicts between sources they are treated with the appropriate deference to the better source.
There is some evidence that a low-carbohydrate diet may help people lose weight more quickly than a low-fat diet (31,32)âand may help them maintain that weight loss.
Low Carb Diets -vs- Other Diets. Very Low Carbohydrate diet have been shown to be more effective for short-term weight loss (less than 6 months to 1 year) than calorie restrictive diet and/or low fat diets. Improvements in blood pressure, lipids, fasting glucose, and insulin were also observed. Brehm BJ, Seeley RJ, Daniels SR, D'Alessio DA (2003).