I drink about 3 cups of coffee with no sugar everyday

As a diuretic it may cause a blood sugar rise "in some people" - data that I have seen shows that it is more common in the occasional coffee drinker then the habitual, but you have to "see" how it effects YOU

I drink between 8 and 12 coffee's a day (8oz = 1 coffee) and it does NOTHING to my blood sugar at all, but if don't get a coffee or two in me within the first couple hours of the day, I get blinding headaches (caffeine withdrawal)

No way what so ever. It's the sugars that effect your sugar level

@A DiabetesTeam Member some diabetics see a blood sugar rise from coffee, I drink upwards of 12 X 8oz coffee a day and my A1C is always below 6.0 and I have never taken a med - so Coffee has no "negative" effect on my diabetes management

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Beverage with caffeine gives me heart palpitation. So l avoid drinking Caffeine