Probiotics, prebiotics, and digestive support compounds that nurture the gut microbiome and digestive wellness.
27 itemsDo GABA supplements cross the blood–brain barrier? A focused, evidence-based look at the debate, pharmaGABA vs synthetic, and natural ways to support GABAergic calm.
How psychobiotics may influence anxiety via the vagus nerve, with evidence on key Lactobacillus and Bifidobacterium strains and what fermented foods add.
A focused look at how mushroom beta‑glucans interact with the immune system and why hot‑water vs dual extraction changes their effects, with evidence from mechanistic studies and human trials.
Do lactase enzymes really help lactose intolerance? Research suggests lactase and fermented dairy can reduce symptoms for many, while broad enzyme blends and allergy claims are hype.
A focused review of the Lactobacillus helveticus R0052 and Bifidobacterium longum R0175 psychobiotic combination, how it may influence anxiety via the gut–brain axis and vagus nerve, and where fermented foods fit.
Research-backed look at how gut microbiome diversity relates to autoimmune risk, mechanisms, early-life factors, diet patterns, and traditional perspectives.
A focused evidence review of turkey tail mushroom’s PSK/PSP and how these protein-bound polysaccharides may modulate the gut–immune axis, with clinical insights, mechanisms, extraction considerations, and TCM context.
Confused about zonulin tests for leaky gut? Learn what zonulin is, why commercial tests are debated, and how results relate to true intestinal permeability.
Zonulin biology is real, but commercial zonulin tests for “leaky gut” are inconsistent. Here’s what research says about tight junctions, test validity, clinical relevance, and evidence-based ways to support the gut barrier.
Does oral GABA cross the blood–brain barrier? A focused, evidence-based look at the science, PharmaGABA vs synthetic, and natural GABA-supportive strategies for calm.
A focused, evidence-based look at Bifidobacterium longum NCC3001 as a psychobiotic for IBS-related mood symptoms, including human RCT data, vagus nerve mechanisms, and how fermented foods fit into the gut–brain picture.
A focused look at L‑glutamine’s role in athlete immune health, why gut barrier support may matter more than colds prevention, and how traditional broth wisdom aligns with modern research.
Zonulin tests are widely marketed for “leaky gut,” but research shows analytical limitations and unclear clinical value. Learn what serum and stool zonulin really measure, how they compare with lactulose–mannitol testing, and what conventional medicine accepts versus what remains debated.
A focused, evidence-based look at whether oral GABA crosses the blood–brain barrier, how PharmaGABA compares with synthetic forms, and what alternative calming strategies research suggests.
A focused, evidence-based look at Bifidobacterium longum strains (NCC3001, 1714) and what research suggests about anxiety and stress outcomes via the gut–brain axis.
A focused review on L‑glutamine and exercise‑induced gut permeability in athletes—mechanisms, small RCTs, immune links, and traditional bone broth context.
Learn how hot water and dual extracts of medicinal mushrooms shape beta-glucans, triterpenes, and immune modulation—plus evidence on turkey tail PSK/PSP and reishi.
Are zonulin blood or stool tests accurate for “leaky gut”? This evidence-based review explains what zonulin measures, how it compares with lactulose–mannitol testing, and what research says about barrier-supportive strategies.
The updated hygiene (Old Friends) hypothesis explains how reduced microbial diversity may shape gut–immune development and influence autoimmune risk in T1D, MS, RA, and Hashimoto’s.
A focused, evidence-based look at turkey tail’s PSK and PSP extracts, how their beta-glucans may modulate immunity, and what clinical research suggests about using them as adjuncts to therapy.
Many people order serum or stool zonulin tests to assess “leaky gut.” This focused review explains what zonulin does, why assays are controversial, how results compare with validated permeability tests, and practical, evidence-informed alternatives.
Do fermented foods act like proto‑psychobiotics? A focused, evidence‑based review of kimchi, kefir, miso, the vagus nerve, and Lactobacillus/Bifidobacterium research for mood and anxiety.
A focused, evidence-based review of L‑glutamine for exercise‑induced gut permeability in athletes, bridging modern research with traditional nutrition perspectives.
A focused look at how mushroom beta‑glucans engage Dectin‑1 and other receptors to modulate innate immunity, why extraction methods matter, and where human evidence stands.
Live beneficial bacteria that support gut microbiome health, digestion, and immune function.
Irritable bowel syndrome (IBS) is a chronic, relapsing disorder of gut–brain interaction characterized by abdominal pain associated with altered bowel habits, without structural disease that explains the symptoms. Western medicine classifies IBS using the Rome IV criteria: recurrent abdominal pain, on average, at least 1 day per week in the last 3 months, associated with two or more of the following—related to defecation, associated with a change in frequency of stool, and associated with a change in form (appearance) of stool—with symptom onset at least 6 months before diagnosis. Subtypes are defined by predominant stool pattern: diarrhea-predominant (IBS-D), constipation-predominant (IBS-C), mixed (IBS-M), and unclassified. Pathophysiology is multifactorial: visceral hypersensitivity, altered motility, immune activation and barrier dysfunction, dysbiosis, bile acid malabsorption in a subset, and central modulation via the gut–brain axis. Psychosocial stressors and early life adversity can amplify symptoms through bidirectional brain–gut signaling. Evidence-based Western management is multimodal and personalized. First-line lifestyle strategies include regular physical activity, sleep optimization, and diet. The low-FODMAP diet—temporary restriction of fermentable oligo-, di-, monosaccharides and polyols—has strong evidence for reducing global IBS symptoms when delivered in a structured elimination and reintroduction program (best studied by Monash University). Soluble fiber (psyllium) is recommended in IBS-C and some mixed phenotypes, while insoluble fiber may worsen symptoms. Pharmacologic options are matched to subtype and dominant symptoms: antispasmodics (e.g., dicyclomine, hyoscyamine) for cramping; loperamide for urgency/diarrhea control (not for global symptom relief); bile acid sequestrants in suspected bile acid diarrhea; non-absorbed antibiotic rifaximin for IBS-D; secretagogues such as linaclotide and plecanatide for IBS-C; lubiprostone (women with IBS
IBS and anxiety frequently travel together through a shared gut–brain axis. IBS is a disorder of gut–brain interaction defined by recurrent abdominal pain with altered bowel habits, while anxiety e...
