New evidence
A meta-analysis of 21 trials linked Lactobacillus casei HA-108 to a 0.72 mmol/L drop in fasting glucose — but the same analysis found zero effect on androgen levels, lipids, or reproductive hormones.
This is the first solid evidence that this specific probiotic strain may improve blood sugar control, but the benefit looks narrow (no help for hormones or cholesterol) and comes from a single meta-analysis — early data, not a settled fact.
Researchers pooled 21 randomized trials involving 1,144 people and found that changing the gut microbiome with Lactobacillus casei HA-108 lowered fasting blood sugar by about 0.7 mmol/L, cut fasting insulin by 1.7 μIU/mL, and reduced insulin resistance. However, the same analysis showed no significant changes in androgen levels, lipid profiles, or reproductive hormones, so the effect appears limited to glucose metabolism and inflammation — not a broad metabolic fix.
Where this fits in the evidence
This is among the first studies we've indexed on Lactobacillus casei HA-108 for Improved Glycemia — treat it as an early signal until more research accumulates.
The study
- Systematic Review
- n = 1,144
- 2026-03-04
- BMC endocrine disorders
This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.