Monograph
Bifidobacterium Strains: A Practical Guide
Overview Bifidobacterium is the dominant bacterial genus in the infant gut (comprising up to 90% of the microbiome in breastfed newborns) and remains a major component of the healthy adult colon. Its proportional abundance declines with age, antibiotic use, Western diet, and chronic disease.
By Kristopher Crawford
Β·
13 May 2026
Β·
3 min read
Overview Bifidobacterium is the dominant bacterial genus in the infant gut (comprising up to 90% of the microbiome in breastfed newborns) and remains a major component of the healthy adult colon. Its proportional abundance declines with age, antibiotic use, Western diet, and chronic disease.
In the full monograph
- What it is, and how it works
- What the evidence shows — randomized trials, observational data, animal studies, graded and cited
- Dose, form, and timing
- What to expect, and how soon
- Who should be careful, and what to check first
- The verdict
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