Read Tomaz's posts on this thread, they are the best
"Type 2 is insulin resistance. Meaning there is insulin in the body, but cells can't use it to absorb glucose from blood. Again, while sugar and carbohydrates cause spikes in glucose, they are not the main reason for insulin resistance, which often can be reversed (increasing insulin sensitivity), and there are several quite successful programs for it, which include cutting out fats, blaming them for "clogging" cells and therefore starving them of energy. Type 2 diabetes patients are generally very slim, although they consume large amount of foods. Improving sensitivity to insulin can lower the glucose levels without medication, although it requires significant lifestyle changes, where many people rather take medication like Metmorfin, or even resort to insulin injection"
Although type 2 patients are not generally very thin, generally they are overweight, maybe he's referring to Thailand