To moje argumenty:
Z tego opracowania:
http://www.ajcn.org/cgi/content/full/80/5/1246
The results of the current study show that milk proteins have insulinotropic properties, with the whey fraction being a more efficient insulin secretagogue than casein. It remains to be shown whether the insulinotropic effect of whey and milk depends on an optimal and rapid postprandial release of certain amino acids to the blood, the release of a bioactive peptide, or an activation of the incretin system, particularly by enhancing GIP secretion. Also, the potential long-term effects of a noncarbohydrate–mediated insulin stimulus on metabolic variables should be evaluated in healthy persons and in persons with a diminished capacity for insulin secretion.
Z tego opracowania:
Hoyt G, Hickey MS, Cordain L. Dissociation of the glycaemic and insulinaemic responses to whole and skimmed milk. Br J Nutr. 2005 Feb;93(2):175-7.
Except for cheese with an insulin score of 45 (Holt et al. 1997) all dairy products (whole milk, skimmed milk, yoghurt, ice cream, cottage cheese and fermented milk products) have been shown to have potent insulinotropic properties that may have far-reaching health effects, given the hypothesis that insulinaemia is a modulator of insulin resistance (Ludwig, 2002).
Zajrzyj do tabel z tekstu, którego autorem jest Holt.
I na koniec mocny tekst:
High intakes of milk, but not meat, increase s-insulin and insulin resistance in 8-year-old boys.
Hoppe C, Molgaard C, Vaag A, Barkholt V, Michaelsen KF.
Department of Human Nutrition and Centre for Advanced Food Studies, The Royal Veterinary and Agricultural University, Frederiksberg, Denmark. [email protected]
OBJECTIVE: Our objective was to examine if a high animal protein intake from milk or meat increased s-insulin and insulin resistance in healthy, prepubertal children. A high animal protein intake results in higher serum branched chain amino acids (BCAA; leucine, isoleucine and valine) concentrations, which are suggested to stimulate insulin secretion. Furthermore, milk possesses some postprandial insulinotrophic effect that is not related to its carbohydrate content. DESIGN: A total of 24 8-y-old boys were asked to take 53 g protein as milk or meat daily. At baseline and after 7 days, diet was registered, and insulin, glucose, and amino acids were determined. Insulin resistance and beta cell function were calculated with the homeostasis model assessment. RESULTS: Protein intake increased by 61 and 54% in the milk- and meat-group, respectively. In the milk-group, fasting s-insulin concentrations doubled, which caused the insulin resistance to increase similarly. In the meat-group, there was no increase in insulin and insulin resistance. As the BCAAs increased similarly in both groups, stimulation of insulin secretion through BCAAs is not supported.
CONCLUSIONS: Our results indicate that a short-term high milk, but not meat, intake increased insulin secretion and resistance. The long-term consequences of this are unknown. The effect of high protein intakes from different sources on glucose-insulin metabolism needs further studying.
Trudno mi jest określić jakie tak naprawdę ma to znaczenie, ale rozpatrywałem temat dosyć dokładnie, również na podstawie innych tekstów i pewien problem niewątpliwie istnieje.
Zmieniony przez - ellis w dniu 2006-10-31 19:28:43