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  #1   ^
Old Tue, Jun-10-08, 08:09
teaser's Avatar
teaser teaser is offline
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Location: Ontario
Default Carbs cause visceral fat accumulation

MUFA-rich diet prevents central body fat distribution and decreases postprandial adiponectin expression induced by a carbohydrate-rich diet in insulin-resistant subjects
JA Paniagua1,2, A Gallego de la Sacristana1, I Romero1, A Vidal-Puig4, JM Latre3, E Sanchez1, P Perez-Martinez1,2, P Lopez-Miranda1,2 and F Perez-Martinez1,2


Objective: Central obesity is associated with insulin resistance through factors that are not fully understood. We studied the effects of three different isocaloric diets on body fat distribution, insulin sensitivity and peripheral adiponectin gene expression.

Research Design and Methods: Eleven volunteers, offspring of obese type 2 diabetic patients with abdominal fat deposition were studied. These subjects were considered insulin resistant as indicated by their Matsuda Index < 4 after OGTT and they maintained HBA1c < 6.5% without therapeutic intervention. All subjects underwent three dietary periods of 28 days each in a crossover design: a) diet enriched in saturated fat (SAT), b) diet rich in monounsaturated fat (MUFA; Mediterranean diet) and c) diet rich in carbohydrates (CHO).

Results: Weight, body composition and resting energy expenditure remained unchanged during the three sequential dietary periods. Using dual-energy X-ray absorptiometry we observed that when patients were fed a CHO-enriched diet their fat mass was redistributed towards the abdominal depot while periphery fat accumulation decreased compared with isocaloric MUFA-rich and high SAT diets (ANOVA < 0.05, respectively). Changes in fat deposition were associated with decreased postprandial mRNA adiponectin levels in peripheral adipose tissue and lower insulin sensitivity indices (SI) from a frequently sampled insulin-assisted intravenous in patients fed a CHO-rich diet compared with a MUFA-rich diet (ANOVA < 0.05, respectively).

Conclusions: An isocaloric MUFA-rich diet prevents central fat redistribution and postprandial decrease in peripheral adiponectin gene expression and insulin resistance induced by a carbohydrate-rich diet in insulin-resistant subjects.

I like the direct measurement of the effect of high carbohydrate consumption and it's effect of increasing abdominal depot (visceral) fat. The effect of monounsaturated fat looked to me to be fairly similar to the effect of saturated fat, but notice the praise is all for MUFA.

full study
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  #2   ^
Old Tue, Jun-10-08, 08:27
Dodger's Avatar
Dodger Dodger is offline
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Plan: Paleoish/Keto
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Amazing how the results from the saturated fats test gets ignored.
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