Gut & Immunity
The gut and immune axis, microbiome interventions, and what the evidence actually supports.
From the magazine · 11
All articles →Probiotic Blend Shows Modest Benefit in Reducing Body Fat Alongside Diet and Exercise
A recent randomized controlled trial explored the effects of a specific three-strain Limosilactobacillus fermentum probiotic on body composition in adults with overweight or obesity. Participants who took the probiotic in conjunction with a hypocaloric diet and walking program showed a slightly greater reduction in body fat compared to a placebo group [1].
Water Kefir May Influence Gut Microbiome Composition, but More Research is Needed
A recent small study explored the effects of daily water kefir consumption on the gut microbiome in healthy adults, observing shifts in certain bacterial populations. However, the absence of a control group and unstandardized diets limit the confidence in these findings.
Probiotic Supplementation May Reduce Levels of Bacteria Associated with Dental Cavities
A recent systematic review suggests that daily consumption of the probiotic Bifidobacterium lactis BB12 can decrease the presence of Streptococcus mutans, a key bacterium linked to dental cavity formation, in saliva. However, direct evidence linking this reduction to actual cavity prevention is currently lacking.
Probiotic Supplementation May Improve Gingival Health and Modulate Oral Microbiota
A recent randomized, double-blind, placebo-controlled trial suggests that an 8-week course of the probiotic Weissella cibaria CMU (OraCMU) can significantly reduce gingival inflammation and improve oral microbiota in individuals with gingivitis and early periodontitis.
Fermented Foods: Unlocking the Oral-Gut Axis for Health and Disease Prevention
A recent review explores how the microbiome of fermented foods interacts with the human oral and gut microbiomes, influencing immunity and metabolic health. The article highlights the potential of fermented foods as a personalized dietary strategy for wellness.
Understanding Your Gut Microbiome: Separating Science from Wellness Hype
The gut microbiome, a complex ecosystem of microorganisms, profoundly influences human health. While its importance is widely recognized, much of the information circulating in the wellness sphere about gut health testing and optimization lacks strong scientific backing.
Probiotic Supplementation May Offer Mental Health Benefits for Older Adults with Depression
A recent pilot study suggests that a daily probiotic supplement, when used alongside standard antidepressant treatment, may help reduce symptoms of depression and anxiety in older adults. This research highlights the potential role of the gut-brain connection in mental health.
Cohabiting Couples Share a Significant Portion of Their Oral and Gut Microbiomes
A recent study indicates that romantic partners living together share a substantial percentage of their oral and gut microbiomes, with direct saliva exchange, like kissing, playing a key role in oral microbe transmission. While most shared microbes are harmless, researchers are exploring potential links between transmissible strains and health conditions.
The gut-brain axis: what human studies can and can’t yet prove
Human studies now show the gut-brain axis is more than a mouse-model story, but the strongest evidence still supports association, not a simple one-way cause. Interventions can shift microbiome signals and some brain-related outcomes, yet effects remain modest and context-dependent.
Fiber and Your Microbiome: What Human Trials Really Show
Dietary fiber reliably shifts the gut microbiome and its metabolites, but clinical benefits depend on dose, type, and your starting microbiome. Here’s what trials—and their limitations—actually show.
Probiotics: Which Strains Have Clinical Evidence?
Not all probiotics are interchangeable. Clinical benefit is strain-specific and strongest for a few gastrointestinal and urogenital uses, while many marketed products still lack direct human evidence.