I'm a type 1 and I don't understand this question: Does the amount of fast acting insulin (Novorapid, Humalog) you take has anything to do with the amount of slow acting insulin (Lantus, Levemir) you take? I'll try to explain myself: Suppose that a person takes 18 units of slow acting a day, and takes also 10 units of fast acting at breakfast, 5 at lunch and 8 at supper. If one day he eats more at breakfast and takes 12 units of rapid, should we expect that slow insulin doesn't work so well during the rest of the day, having to increase the amount of slow acting? Or on the contrary, does slow insulin just depend on body weight and abdominal fat of the patient? I've read some articles that say that basal insulin should not ever have any hypoglycemic effect, maintaining stable glucose even if we skip a meal. In fact, they say that the way to test if your basal insulin rate is correct is skipping a meal and checking if glucose remains stable. Is that true? Thank you!