I've been following Dr Mario Kranz's blogs for a while now. He is a scientist and researcher in the nutritional field - and found this very fascinating with regard to how adipose tissue affects our insulin sensitivity. The bottom line is - the number 1 thing you can do to improve your insulin sensitivity is - lose weight. In particular, visceral fat. Enjoy and i'd highly recommend watching all his other videos which are 100% evidence based, with full bibliography on his website.