Someone recently asked if they could eat fruit and if so, how much. Well, as a person who is entirely insulin dependent (as opposed to a type 2 or LADA who may still make some insulin) and who targets normalized blood sugar (85) at all times, not just pre-meal and who uses many small doses of multiple insulin products, I can not justify eating fruit anymore. (Thank you Dr. Bernstein for pointing out the problem. Without testing blood sugar at 15, 30, 60 minutes, I never would have realized the problem - though I'd "felt" the effects for years.)
There are no insulin products (Apidra, Humalog or Novolog) currently being sold that prevent a spike in blood sugar if I stick a piece of fruit in my mouth. In fact, most fruit is so fast that if I find myself at say 60 (need a 25 point increase), who needs juice? All I have to do is take a bite of a peach or a few grapes and within minutes, I'm back to target.
Although fruit contains necessary vitamins, I believe we can get them from vegetables without rapid blood sugar spikes and drops. Some people may eat fruit with some form of protein and are able to keep spikes from occuring. Some people subscribe to being back in target at 2 hours is fine.
I do not like the way eating fruit makes me feel ... rapid high, hunger, rapid drop. No thanks.
On the other hand, I use ONLY juice (no sugar added apple or orange) for low blood sugar and usually buy juice with calcium added. So I do get vitamin c and the bonus of the calcium.
My favorite metaphor is "do you choose the watermelon or your kidneys"? I choose my kidneys!