Does caffeine raise anyones bg?

Coffee raises my blood Glucose, but i think it is due to another kind of imbalance I have like I have raised stress levels basically and therefore more cortizol than most people... some diabetics have this isue ... which also can be a contributing factor to the raised morning glucose many experiences ...

mostly only drink coffee in the afternoons ...

I drink a lot of coffee to be honest but it seems to have little effect on my BG levels. though I no longer drink it last thing at night my night cap of late has been herbal tea.

Basically because dunking biscuits in herbal tea is yuk.