What is the cause of type 2 diabetes

There are many theories as to the cause of type 2 diabetes, no one is 100% sure but there seems to be a strong indication that a diet low in essential fatty omega 3 6 and 9 acids and a diet high in processed sugars and flours as well as large amounts of hydrogenated and partially hydrogenated fats and trans fatty acids.
Also a lifestyle with little or no exercise. The general consensus leans towards type 2 diabetes being a genetic disease yet the facts do not bear this out. Our gene pool does not simply jump the ratio of sufferers from 1 in 100 00 to roughly 1 in 10 over a fifty year period. Some other factor is to blame here. It is no coincidence that in the last year or so, we have seen a massive movement for the eradication of hydrogenated oils from our supermarkets. Perhaps the law suits are already threatening and the huge multi national markets are getting ready for damage limitation.