Diabetic vapor here. Haven't noticed blood sugar rising with anything I've vaped yet. As mentioned by Sarin " You don't vape sugar", sugar would gunk up your coils really quick. I've been into DIY for ten mos now & use Stevia when I want a little sweetness in the juice. I also use Ethyl Maltol in a few of my mixes with no effects on my blood sugar. YMMV