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.
Therefore, low-carb diets would give the brain less fuel, and therefore diminish its function. This speculation was demonstrated as correct by the study of 19 women from 22 to 55 years of age. This more recent finding is in addition to the long-suspected links between low carbohydrate dieting and heart disease.