There is a morality becoming oppressing with diabetes.

On the one hand, everyone blames obesity.
BUT...there are hints that other things are also causitive.

1) antibodies to a certain virus have been found in people who are overweight/obese. This is a form of cold virus.

2) high fructose corn syrup, is very bad. Sucrose was removed from the food we consume by a consortium of corn suppliers here many years ago. This high fructose corn syrup consumed by small children by the gallon in "juices" is a serious problem.
Look at all the energy drinks... 28gm 35 gm of high fructose corn syrup in each can!

3) look at the incidence of pituitary adenomas that are found on random autopsies.

4) Ethnic differences in food handling/metabolism by the body.
The US is a melting pot of new mixtures of genes. Research into ethnic handling of certain foods, shows that Native Americans develop obesity faster and more deadlier than other groups. Blacks also have a problem with this metabolism.
There are some very good books out now on this... interesting reads. "Your Body Knows Best" is the one I read.
Did you know that people with Type A blood are most successful in becoming vegetarian? Type O's must have meat.
Type B's need some dairy? Type ABs do the worst with cancer (succumb faster than other types).

5) I personally believe that much of our struggles are genetic as far as weight goes, and diabetes risk.
You can only do so much. The rest your body will do.
There are people who can eat carbs all they want and never gain much weight. Others can't have ANY carbs much at all, and have to really restrict them.

So placing a morality label on people is unfair IMO.
And also greed within the food industry has morally ruined
many lives. The morality of it all, is rather depressing, at
least to me.