Diabetes and Menstruation

In some women who have type 1 diabetes, the hormonal changes that come with menstruation can cause changes in blood glucose levels. Monitoring levels and adjusting insulin accordingly is key to managing this monthly shift.

Two or three days before menstruation, as estrogen and progesterone levels are changing, a number of women — but not all — will notice that their insulin needs increase substantially because their blood glucose levels are rising.

If this happens, levels usually decrease after their period begins.