Artificial Sweeteners and Gut Bacteria: The Human Trials
The sweetener-microbiome claim began with seven people and a lot of mice. Ten human studies later, the picture is smaller, slower and more person-specific than the headlines suggest.
Probiotics, fiber and the gut-brain axis, with the human evidence kept separate from the mouse models.
The sweetener-microbiome claim began with seven people and a lot of mice. Ten human studies later, the picture is smaller, slower and more person-specific than the headlines suggest.
The gut runs on its own circadian clock. Late or irregular meals disturb enzyme timing and overnight motility, which can produce bloating that diet changes alone do not fix.
Probiotic trials show small effects on mood scores, and the SMILES trial found a diet change beat social support for depression remission. A sober read of the gut-brain axis and mood.
Intestinal permeability is measurable, and diet moves it. Fermented foods, resistant starch, polyphenols and glutamine support the gut barrier; emulsifiers and alcohol weaken it.
The average American eats six times less fiber than our ancestors did. The downstream effects go far beyond digestion.
Gut bacteria signal to the brain through the vagus nerve, immune messengers and metabolites. What disrupts them, and a six-week fiber and fermented-food plan grounded in human trials.
Evidence-based breakdown of the gut microbiome, leaky gut, probiotics, prebiotics, fermented foods, and practical protocols to optimize digestive and whole-body health.
Gut bacteria convert ellagitannins from pomegranate and berries into urolithin A, but not everyone carries the right strains. Randomized trials report modest muscle-endurance gains; what supplements can and can't add.
Probiotics are a multi-billion-dollar category with mixed evidence. Where they help (IBS symptoms, antibiotic-associated diarrhea), where they don't, and why strain matters more than CFU count.
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