I have thought for ages that it makes sense to keep TIGHT control.
After all not many non-diabetics get "Diabetic Complications". Although it has been shown that non-diabetics with above optimal HbA1cs do develop them.
This is where Bernstein's thinking is helpful. The space between normal BG and Hypo is narrow, so by minimising insulin doses, the risk of tipping over is reduced. This more particularly applies to T1
For me as a T2, using only minimal doses of Metformin, Hypo is a RARE thing. I developed one some weeks back, for no reason I was ever able to identify. I know what it feels like, because I used to use Gliclazide, which can cause it and in my case did a few times. Metformin is meant not to and my doses are small.
I have been jumped on a number of times by different people, because I always advocate reducing carbs, although I usually do say that increasing medication is an option. I am wary of side effects from any medication,so I chose not to use the "more medicine" option.
Since reading the recent studies on the effects of Leptin, I am more convinced that treating diabetes, need to tackle the causes and not just the symptoms.
( again this applies more to T2 than T1
Back to Bernstein: it seems that Bernstein patients are pretty free of complications, as is he.