Can Probiotics Stop Diabetes? : Terry Talks Nutrition

Study Spotlight

Study Spotlight

Can Probiotics Stop Diabetes?


The Centers for Disease Control and Prevention (CDC) reports that about 84 million Americans have pre-diabetes – abnormally high blood sugar but not yet the level of type 2 diabetes. That’s in addition to the almost 30 million Americans who do have type 2 diabetes – almost 24 percent of whom don’t know it yet.

While many lifestyle interventions, including increasing achievable levels of exercise and moving to an anti-inflammatory, low sugar diet can help, supplementation with probiotics and prebiotics show promising results.

This clinical study found that by modifying the gut microbes – the healthy bacteria in our digestive system that help us absorb nutrients and support our immune system – levels of blood sugar can be modified, too.

While probiotics alone can have a positive effect on HbA1C levels and fasting insulin, it seems that combining them with prebiotics (a kind of “food” for probiotics), gets better results.

Abstract:

Kassaian N, Feizi A, Aminorroaya A, Jafari P, Ebrahimi MT, Amini M. The effects of probiotics and synbiotic supplementation on glucose and insulin metabolism in adults with prediabetes: a double-blind randomized clinical trial. Acta Diabetol. 2018;55(10):1019‐1028.

Aims: Probiotics and/or prebiotics could be a promising approach to improve metabolic disorders by favorably modifying the gut microbial composition.

Objectives: To assess the effects of probiotics and synbiotic on glycemic indices in prediabetic individuals who are at risk of type 2 diabetes and its complications.

Methods: In a double-blind, randomized, placebo-controlled parallel-group clinical trial, 120 prediabetic adults participated and were randomly allocated to receive either probiotics or synbiotic or placebo supplements for 24 weeks. Anthropometric measurements, food record, physical activity and glycemic biomarkers including glycated hemoglobin (HbA1C), fasting plasma glucose (FPG), fasting insulin levels (FIL), homoeostasis model assessment for insulin resistance (HOMA-IR), quantitative insulin sensitivity check index (QUICKI), and β-cell function (HOMA-B) were assessed at baseline and repeated at 12 and 24 weeks and compared within and between three groups using repeated measure ANOVA.

Results: Compared with the placebo, synbiotic supplementation resulted in a higher significant reduction in FPG (- 6.5 ± 1.6 vs. - 0.82 ± 1.7 mg/dL, P = 0.01), FIL (- 2.6 ± 0.9 vs. - 0.8 ± 0.8 µIU/mL, P = 0.028), and HOMA-IR (- 0.86 ± 0.3 vs. - 0.16 ± 0.25, P = 0.007), and a significant elevation in the QUICKI (+ 0.01 ± 0.003 vs. + 0.003 ± 0.002, P = 0.006). In addition, significant decreases in HbA1C was seen following the supplementation of probiotics and synbiotic compared with the placebo (- 0.12 ± 0.06 and - 0.14 ± 0.05 vs. +0.07 ± 0.06%, P = 0.005 and 0.008, respectively). HOMA-B was not found to be different between or within the three groups.

Conclusion: Glycemic improvement by probiotics and particularly synbiotic supplements in prediabetic individuals has been supported by current study. However, further studies are required for optimal recommendations in this important area of patient treatment.

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