Can Probiotics Really Help Prevent Diabetes? Here’s What the Research Shows
A lot of health claims on social media sound more confident than the science behind them. The idea that probiotics can prevent diabetes is one of those claims that needs a bit more nuance. The short answer: there may be a small benefit for blood sugar control, but probiotics are not a reliable way to prevent diabetes on their own. A recent review of eight controlled clinical trials looked at people with prediabetes who took probiotics for periods ranging from 8 to 24 weeks. These probiotics came in several forms, including capsules, powders, yogurt, and kefir, and used strains commonly found in over-the-counter supplements. The main measurement researchers focused on was HbA1c , a blood test that reflects average blood sugar levels over the previous two to three months. The findings showed that people taking probiotics experienced a small but consistent reduction in HbA1c—about 0.07% compared with placebo . At first glance, that number may seem unde...