It's very important to have a healthy gut biome. And having a good balance of good bacteria versus bad bacteria in your gut can contribute towards a healthy blood sugar profile.
Surprise surprise probiotics, good gut bacteria, is involved in the blood sugar process. Studies have shown that supplementing with probiotics has had a significant positive impacton blood sugar levels. Considering the average very poor nutrient and low in probiotics average diet, which is also loaded with chemicals, it would make sense that having poor gut balance of bacteria could contribute to a whole host of problems including blood sugar issues. Probiotics have been shown to reduce glucose levels, HbA1c, insulin levels and insulin resistance in studies.