What Glucose Monitoring Works Best During Pregnancy With Type 1 Diabetes?

Pregnancy changes how your body processes insulin and glucose. For women with Type 1 diabetes, this means managing blood sugar becomes even more critical—both for your health and your baby's development. Diabetes in pregnancy (which includes Type 1, Type 2, and gestational diabetes) is increasing worldwide, and the World Health Organization recently declared it a public health priority.

The question isn't whether to monitor glucose during pregnancy, but how. Different approaches—from routine check-ups at prenatal visits to at-home blood sugar testing to continuous glucose monitors—offer different levels of detail and real-time feedback.

Researchers looked at three ways women with diabetes monitor glucose during pregnancy:

**Routine care at antenatal visits**: Standard prenatal appointments where glucose is checked periodically, but not daily.

**Self-monitoring of blood glucose (SMBG)**: Testing your own blood sugar multiple times daily using a fingerstick meter—you see individual readings but not continuous trends.

**Continuous glucose monitoring (CGM)**: A sensor worn on your body that tracks glucose levels automatically throughout the day and night, providing real-time data and trends.

Scientists conducted a systematic review and meta-analysis—combining results from multiple randomized controlled trials—to understand how these approaches affect both maternal health and baby outcomes.

They looked at maternal glucose control (measured by HbA1c, fasting glucose, and post-meal glucose levels), weight gain during pregnancy, blood pressure complications, and baby-related outcomes like birth size and the need for neonatal intensive care. The analysis included women with gestational diabetes, Type 1 diabetes, and Type 2 diabetes, with results reported separately for each group.

This research helps inform updated World Health Organization recommendations for caring for pregnant women with diabetes.

Large research reviews like this one take months or years to complete because they search medical databases thoroughly, review hundreds of studies, and carefully extract data from the most rigorous trials. The researchers used the GRADE framework—a respected system—to evaluate how confident we can be in their findings.

This matters because not all evidence is equally strong. A well-designed randomized controlled trial provides stronger evidence than an observational study, and results from many trials are more reliable than results from one study alone.

If you have Type 1 diabetes and are pregnant or planning pregnancy, this research highlights why working with your healthcare team on a monitoring plan matters. The approach your doctor recommends may depend on your individual situation, access to technology, and what works best for your lifestyle.

Discuss with your care team which monitoring method—or combination of methods—will help you and your baby stay healthy. The evidence shows that active glucose monitoring throughout pregnancy makes a real difference in outcomes.

Source: Pregnancy (Hoboken, N.J.). Evidence type: PubMed indexed literature. Type1Cure is an information and intelligence hub, not a medical advice service. This article summarizes published research and does not provide diagnosis, treatment, or personal medical guidance. Always talk to your own care team before changing anything about your Type 1 diabetes management.