I'm unaware of research specific to inhalation but we already know that sublingual sugars, without ingestion, can affect blood sugar levels.
I'd imagine that applies at least a ~little~ in vaping too.
However, the bigger vaping issue with diabetes is the nicotine itself - that's much better understood:
http://phys.org/news/2009-06-nicotine-prediabetes-contributes-high-prevalence.html
http://www.acs.org/content/acs/en/p...-in-diabetes-complications-among-smokers.html
Etc.
I'm unaware of research specific to inhalation but we already know that sublingual sugars, without ingestion, can affect blood sugar levels.
I'd imagine that applies at least a ~little~ in vaping too.
However, the bigger vaping issue with diabetes is the nicotine itself - that's much better understood:
http://phys.org/news/2009-06-nicotine-prediabetes-contributes-high-prevalence.html
http://www.acs.org/content/acs/en/p...-in-diabetes-complications-among-smokers.html
Etc.
-Mags
I am a bit skeptical regarding the nicotine induce insulin resistance statements in the links you provided. Unfortunately and as often the original research paper is not indicated is these type of blogs. From the statement, nicotine would be an inducer of insulin resistance, which lead to type 2 diabetes. If this statement is true, then the incidence of type 2 diabetes would be significantly higher in smoker. Although conveniently stated in some articles, it is extremely difficult to isolate nicotine consumption from other factors such as genetic, environmental and life style (eating habits, exercise etc...). Studies performed in animal models and in cell culture use high nicotine concentrations. In addition, other investigator suggest nicotine induced diabetes by other mechanism than insulin resistance, which are not insulin resistance i.e. Type 2 diabetes. Although correlative, I don't find any convincing demonstrative study so far. I am not convinced but yet I cannot dismiss their claim. Cigarette smoke mess with many aspect of our physiology.