I think the doctors are all wet.
My family ALSO has the heart attacks in the 50s. Our MODY (whatever it is) often seems to generate only "prediabetic" blood sugars.
But there is a bunch of new research linking prediabetic blood sugars post-meal to heart disease. I have documented it at
A1c and High Post-Meal Blood Sugars Predict Heart Attack
I just did a trial of Prandin and it was okay but not great. So I'm going back to insulin. Insulin is all that gives me normal blood sugars. And that's what I demand.
I also have to cut back on the carbs, even with insulin, because I can't make insulin work with more than 40-50 grams at one meal.
But if I do that, I can keep the A1cs in the 5% range not that much higher from my normal spouse.