I think it's worth noting that type I and II don't have much in common. Type I is due to an inability to produce insulin. Beta cells (???) that make it are killed off by the immune system iirc.
Type II is more properly called metabolic syndrome. T2's usually still make at least some insulin but their cells are resistant to it and therefore they require more in order to pull glucose out of the blood.
Also, Type 2's often don't require anything more than oral medication and maybe some sort of basal insulin (basically, a slow-release form of the drug).
This study was only relevant to Type 2.