In addition to all of the previous answers:
The need to have a consistent amount of protein for each meal.
I find that when I forget or don't have time for enough protein at dinner, for example, my blood sugars will drop during the night. On the other hand, if it something quite tasty and I eat more than the usual amount, my blood sugars will escalate through the night. This can be corrected by pump users by increasing the basal rate, though this is probably a no-no for those adhering closely to the DS (Diabetes Solution).
That is now the only time I ever have lows - when I fail to have enough protein at a meal (eg, if I have soup and salad, with a minimal amount of meat in the soup), or forget to bring a can of sardines to have with my lunch (which is mostly salads).
My diabetes nurse is quite amazed at the evenness of my blood sugars, and is beginning to think the low-carb diet is the way to go.
