Research

Hormonal

Probiotic intake improves glucose homeostasis (reducing fasting glucose, HbA1c, insulin, and HOMA-IR) and liver enzymes (ALAT, ASAT) in subjects with Type 2 Diabetes and Non-Alcoholic Fatty Liver Disease (NAFLD), respectively.

If you have Type 2 Diabetes or Fatty Liver Disease, taking multispecies probiotics (containing Lactobacillus or Bifidobacterium strains) daily may help slightly lower your blood sugar, insulin levels, and liver enzymes. However, because these findings are heavily based on studies from Iran, the results may not apply universally. Continue your prescribed medications and consult your doctor before adding probiotics.

ModerateQualifiesLOW confidence
In type 2 diabetics, probiotics reduced fasting glucose... glycated haemoglobin... insulin... and homeostatic model of insulin resistance... In subjects with fatty liver diseases, probiotics reduced alanine... and aspartate aminotransferases
Hana Koutníková et al. · BMJ Open · 2019

Why this rating

Meta-analysis of RCTs, but the results are heavily influenced by 43 trials from a single country (Iran), limiting generalizability.

Source

Impact of bacterial probiotics on obesity, diabetes and non-alcoholic fatty liver disease related variables: a systematic review and meta-analysis of randomised controlled trials

Hana Koutníková et al. · BMJ Open · 2019

DOI 10.1136/bmjopen-2017-017995

Meta-analysis · 99 studiesCited 300×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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