Needing Insulin Is Not a Failure

Being told you need insulin is, for many women, the most demoralising moment of a GDM pregnancy. It gets read as proof that the eating plan was not followed well enough.

That reading is wrong, and the reason is worth understanding properly.

GDM exists because your placenta produces hormones that make your body resist insulin. Placental hormone output rises steadily as the pregnancy progresses. It does this regardless of what you eat, how much you walk, or how carefully you follow the plan.

So the demand on your pancreas keeps increasing through the second and third trimesters. Diet and activity reduce the load, and for many women that is enough. For others the rising demand simply outpaces what their pancreas can produce, and no amount of dietary care changes that.

This is also why insulin is often started for a stubborn fasting reading in particular. Fasting glucose is driven by your liver overnight under the influence of those hormones — it is the number least responsive to what you ate.

Needing insulin means your pregnancy is doing what pregnancies do, and your treatment is keeping up with it. It says nothing about your discipline.

And it usually ends at delivery, when the placenta leaves and insulin needs drop sharply.