[nouveaux]

"Nevertheless, men with obesity aged 55 y and older lived 2.8 (95% CI −6.1 to −0.1) fewer y without diabetes than normal weight individuals, whereas, for women, the difference between obese and normal weight counterparts was 4.7 (95% CI −9.0 to −0.6) y. Men and women with obesity lived 2.8 (95% CI 0.6 to 6.2) and 5.3 (95% CI 1.6 to 9.3) y longer with diabetes, respectively, compared to their normal weight counterparts."

Is this study suggesting that obese people with diabetes lived longer than obese people without diabetes? I suppose that diabetes as a condition is not harmful in and of itself and perhaps leads to a healthier lifestyle?

[DarylZero]

Diabetes is extremely harmful unless perfectly controlled which it almost never is. The damage accumulates very slowly.

[Zababa]

My (uninformed) guess would be that people with diabetes are followed more closely than people without. Your point about healthier lifestyle is a good one too.