Visceral obesity, impaired glucose tolerance, metabolic syndrome, and growth hormone therapy

Growth Hormone & IGF Research : Official Journal of the Growth Hormone Research Society and the International IGF Research Society
Hamdee AttallahAndrew R Hoffman

Abstract

Overweight adults with impaired glucose tolerance have a 5-10% risk of developing diabetes per year, and insulin resistance is an important cause of progression to diabetes in these individuals. Weight loss has been shown to improve insulin sensitivity and prevent or delay progression to diabetes. According to recent studies, the improvement in insulin sensitivity that occurs with weight loss is closely linked to the reduction of visceral adipose tissue (VAT), the collection of intra-abdominal adipose depots that includes omental and intrahepatic fat. After controlling for BMI, whole body fat, and subcutaneous fat, only VAT is an independent predictor of endogenous insulin sensitivity and glucose tolerance before or after weight loss. This, in turn, suggests that reducing VAT is crucial to improving insulin sensitivity and preventing diabetes in high-risk individuals. Recombinant human growth hormone (GH) is a lipolytic drug that reduces total body, abdominal, and visceral fat in growth hormone-deficient (GHD) adults. Several studies have reported substantial reductions in VAT following GH treatment in this population. Like GHD adults, abdominally obese individuals have increased VAT, insulin resistance, and growth hormone leve...Continue Reading

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