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.
A low-carb diet makes promises that include weight loss, management of blood sugar and better fat utilization during workouts. But, reducing your intake of this major nutrient can cause unwanted side effects -- many of which linger only a few weeks as you adapt to a new way of eating.