I think alternative delivery mechanisms to injection are a feature. Ask any diabetic if they would like less needles in their bodies. There is work and patents

I think alternative delivery mechanisms to injection are a feature. Ask any diabetic if they would like less needles in their bodies. There is work and patents on adjustable dose inhaler systems, but its never going to be a basal insulin that is being delivered. It's prandial. The lung cancer concerns come from the only previous inhaled insulin Exhubra, which was literally vaporized insulin solution and offered no pharmacological benefit over injected insulin. The two instances of lung cancer in the 12(?) years of Afrezza testing occurred with patients who were smokers. I'm not saying that Afrezza is the greatest invention ever, but it is a substantial step up from other mealtime insulins in my opinion.