In each edition, I’ll share the most interesting and actionable findings from the latest health studies so you can stay informed (without sifting through dense medical journals).
Here’s what I found this month:
Carbs Making You Feel Drunk? It May Not Be Yeast
A recent study on Auto-Brewery Syndrome (ABS), where people can feel intoxicated after eating carbs or sugar, found that gut bacteria, not yeast, may be a key driver of alcohol production after eating carbohydrates.
Gut bacteria (primarily E. coli and Klebsiella) produced high levels of alcohol (ethanol)
Antifungal treatment did not resolve symptoms
Antibiotics reduced alcohol production, and a fecal microbiota transplant led to full recovery in one case
If carbs make you feel foggy or "off," bacterial imbalance may be the overlooked driver, not yeast overgrowth
Allergies May Start in the Gut
A review of clinical studies found that small intestinal bacterial overgrowth (SIBO) appears at high rates in people with asthma, food allergies, and mast cell disorders.
• SIBO was found in 50–88% of people with food allergies • 31% of those with mast cell activation syndrome (MCAS) tested positive for SIBO • Treating SIBO was associated with symptom improvement in asthma and MCAS
SIBO may overstimulate the immune system and drive allergic inflammation, making gut treatment a potential lever for allergy relief.
This Probiotic Improved SIBO Treatment
In a clinical trial of 108 patients with SIBO, researchers evaluated whether adding Saccharomyces boulardii to antibiotic therapy improved outcomes.
SIBO clearance: 78% with combination therapy vs. 59% with antibiotics alone
Greater reduction in diarrhea and overall symptom scores
Quality of life improved in both groups
Adding Saccharomyces boulardii may improve treatment response when used alongside antibiotics.
Bad Breath? Your Gut May Be the Source
In a clinical study of 141 patients with chronic bad breath linked to SIBO, a low-FODMAP diet led to substantial improvements without medication.
SIBO resolved in 81% of patients
Bad breath improved in 79%
When SIBO resolved, breath improved in 90% vs. 30% when it did not
High adherence with no major nutritional concerns reported
Gut imbalance is an underrecognized cause of chronic bad breath. For some, dietary change alone may be enough to make a real difference.
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