Obesity and insulin resistance in children
Abstract
It is well known that obesity represents the main modifiable risk factor for insulin resistance in children and adolescents; obesity-induced insulin resistance in children is the most important risk factor for developing cardiovascular diseases and type 2 diabetes in adulthood. The mechanisms through which obesity causes insulin resistance are complex and not completely known to date. In children, global adiposity is the main factor determining insulin resistance. Excessive fatty acids play a determinant role in the pathogenesis of insulin resistance in obese children, inducing an increased production of acetyl-CoA in the liver and enhancing inflammation in adipose tissue. The aetiology of insulin resistance in polycystic ovary syndrome is multifactorial and still debated. The aim of this review is to present an updated frame and new insights of the numerous pathways involved in the development of insulin resistance in obese patients, focusing on the peculiarities of children and adolescents. Improving the knowledge of mechanisms through which obesity leads to insulin resistance is fundamental in order to recommend particular follow-up and possible treatment to specific categories of obese children and adolescents.
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