New evidence
Lactobacillus rhamnosus linked to fewer asthma attacks in children — but the benefit is strain-specific and the evidence base remains thin, a systematic review cautions.
This is among the first systematic reviews to suggest that specific probiotics might reduce asthma exacerbations in children, but the findings come from a small, heterogeneous pool of studies, so the results should be viewed as preliminary until larger, more standardized trials confirm them.
The analysis pooled 10 probiotic trials, mostly using Lactobacillus or Bifidobacterium, in children with asthma. It found that these supplements reduced the number of asthma flare-ups and improved lung function. However, the effect depended on the specific bacterial strain, and many other outcomes, such as airway inflammation or viral infections, were not reliably measured across the studies.
Where this fits in the evidence
This is among the first studies we've indexed on Lactobacillus rhamnosus for Reduced Asthma Exacerbations — treat it as an early signal until more research accumulates.
The study
- Systematic Review
- n = 419
- 2025-04-25
- Frontiers in nutrition
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.