Zitat:
Increases in carbohydrate intake (with reciprocal decreases in fat content) within the boundaries of menus that can be followed in the free-living state have not been shown to decrease insulin resistance, either directly by enhancing insulin sensitivity or indirectly by producing and maintaining weight loss. However, such diets accentuate the metabolic abnormalities that constitute syndrome X.
Komisch ist auch, dass die Studienleiterin der Stern-Studie zum Ergebnis kommt, dass gerade übergewichtige Personen mit Diabetes oder metabolischem Syndrom mit der LC-Diät bessere Ergebnisse erzielen (schnellerer Gewichtsverlust, bessere Blutfettwerte, günstigerer Blutzuckerspiegel).
Zitat:
To a great degree, micro-nutrient intake is affected by total caloric intake regardless of diet. That is, a diet containing 400 calories will have less micronutrients that one containing 2000 calories regardless of composition. Therefore, let us look at nutrient intake relative to caloric intake (amount of nutrient per calorie).
One researcher did exactly this, comparing nutrient intakes of his low-carbohydrate diet to the subject' s normal diet (39). He then examined how much micronutrient intake would be affected if the subject' s normal diets were reduced to the same caloric level as they consumed on the low-carbohydrate diet. As these studies demonstrated, there will obviously be a decrease in nutrient intake if a subject decreases caloric intake from 1900 to 1400 (39). The question therefore is whether a 1400 calorie ketogenic diet is more or less nutritionally complete than a 1400 calorie balanced diet.
On an absolute level, small decreases in thiamine, nicotinic acid, calcium and iron were noted while there were increases in vitamin D and riboflavin. When compared on a relative scale (amount of nutrient per 1000 calories), nutrient intake was actually higher on the lowcarbohydrate diet (39). It should be noted that the diet studied was higher in carbohydrate (averaging 67 grams per day) than most ketogenic diets and contained milk.
Stock A and Yudkin J.: Nutrient intake of subjects on low carbohydrate diet used in treatment of obesity. Am J Clin Nutr (1970) 23: 948-952
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