Depression: strains named in the research

Bifidobacterium longum is a well-characterized commensal species found throughout the human gut, with a particularly studied role in early-life microbiome establishment.

Lactiplantibacillus plantarum (formerly Lactobacillus plantarum) is a well-characterized lactic acid bacterium found across fermented foods, the human gut, and diverse environmental niches.

Lactobacillus helveticus is a lactic acid bacterium widely used in dairy fermentation and probiotic applications.

Akkermansia muciniphila is a gut bacterium that naturally inhabits the mucus layer lining the intestine and has attracted substantial scientific interest as a potential next-generation probiotic.

Lacticaseibacillus rhamnosus, most widely studied as the GG strain, has an extensive research record, though the evidence base in this index is predominantly in vitro and animal-model work.

Lactobacillus acidophilus is one of the most studied lactic acid bacteria, with research dating back decades documenting its ability to survive the harsh conditions of the gastrointestinal tract, including acid and bile …

Bifidobacterium breve is a species commonly found in the human gut, particularly in breastfed infants, where it plays a role in fermenting complex carbohydrates including human milk oligosaccharides.

Lactobacillus casei (species-level entry, undesignated strain) is a broadly studied lactic acid bacterium encountered across fermented dairy and non-dairy foods.

Lactobacillus helveticus R0052 is most often studied in combination with Bifidobacterium longum R0175, a pairing investigated in the context of the gut-brain axis (the bidirectional communication network linking intestin…

Bifidobacterium longum R0175 is most commonly studied as part of a combination formula with Lactobacillus helveticus R0052, and several RCTs using this pair have examined anxiety and psychological well-being in healthy a…

Bifidobacterium infantis is an anaerobic bacterium native to the infant gut microbiota.

Faecalibacterium prausnitzii is a butyrate-producing commensal bacterium that is among the most abundant in a healthy human gut and has attracted significant research interest as a potential next-generation probiotic.

Lactobacillus brevis is a heterofermentative lactic acid bacterium widely distributed in fermented food environments.

Lacticaseibacillus rhamnosus HN001 (formerly classified as Lactobacillus rhamnosus HN001) has been studied across in vitro, animal, and human randomized controlled trial settings.

Lacticaseibacillus paracasei (the species, without a designated strain identifier) is a broadly distributed lactic acid bacterium found in fermented foods and the human gut.

Lacticaseibacillus rhamnosus GG (LGG) is one of the most extensively studied probiotic strains globally, though the papers linked to this strain entry focus primarily on encapsulation technology and formulation stability…

Clostridium butyricum is a spore-forming anaerobic bacterium capable of producing butyric acid through fermentation.

Escherichia coli Nissle 1917 (EcN) is a non-pathogenic E.

Lacticaseibacillus casei (species-level entry, no specific strain designation) is a broad species grouping that includes well-studied commercial strains such as L.

Lactobacillus johnsonii is a facultative anaerobic lactic acid bacterium originally isolated from the human vaginal microbiota.

Limosilactobacillus reuteri DSM 17938 (formerly Lactobacillus reuteri DSM 17938) has been studied in multiple randomized controlled trials and at least one published meta-analysis examining infantile colic, episodes of p…

Bacillus coagulans is a spore-forming bacterium studied as a probiotic candidate, in part because its spores exhibit heat and acid stability, a property studied in relation to survival through food processing and gastric…

Bifidobacterium longum NCC3001 has one of the more developed gut-brain research profiles among probiotic strains.

Bacteroides uniformis is a common anaerobic bacterium of the human gut microbiome, and a specific strain (CECT 7771) has attracted research interest for its metabolic effects in animal models.