I realise i have a few unanswered points in my other thread, i’ll get to those when i can. In the meantime, i’m trying to manage wayward BG excursions. Is it just me, or do others find their C/I ratio is sometimes fairly reliably (say) 1u/15g at a certain time of day, and then, suddenly, without warning or external influence (no change in stress, exercise, sleep, anything), it jumps to (say) 1u/3g ?
A case in point, this afternoon. I was nice and stable from midday to around 3pm, after a 28g carb lunch, upon which i decided to eat a nectarine. it weighed in at 165g, so i figured less the stone, and 11% carb, this was around 16g of carb. I should need 1unit. So i injected 1u and ate it… and then i rose sharply, so i injected more, i rose further, i injected further, i rose futher, i injected further, i rose futher, i injected still further. i ended taking with 5u, for 16g, so my ratio has moved, without any notice or external influence, from 1u/15g to 1u/3g. That’s not just a 10-20% shift, that’s a 400% shift. How the heck was i meant to know this was about to happen? And how is managing to stay in-range (or nearly in-range) even remotely possible when the goalposts shift around this wildly ?
The only external influence i can think of is a coffee (no sugar) i took around 3:30pm, with a splash of milk (surely no more than 2-3g of carb in the milk). I drink 2 or 3 coffees per day and don’t usually notice them having much effect on BG.
What is going on?