In November 2018 researchers from Taiwan published their review of the medical scientific literature to assess the effects of probiotics on blood glucose levels of pregnant women. A total of 12 studies were included in the review. Results showed that the use of probiotics significantly reduced the fasting blood glucose level, insulin levels and insulin resistance of all pregnant women. A further analysis revealed that probiotics had significantly reduced the fasting blood glucose and insulin resistance of pregnant women who had not been diagnosed with gestational diabetes.
Peng TR et al. Effect of Probiotics on the Glucose Levels of Pregnant Women: A Meta-Analysis of Randomized Controlled Trials. Medicina (Kaunas). 2018 Nov 1;54(5).