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Microbiome

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Early life antibiotic exposure shows no association with autism spectrum disorder (ASD). A recent study including all live births in Manitoba, Canada between 1998 and 2016 looked at antibiotic exposure (defined as having filled one or more antibiotic prescriptions in the first year of life) and ASD diagnosis. The study found that antibiotic exposure (both number […]
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Could your gut bacteria make you smarter (or not so smart)? Recent studies show overwhelming evidence that the microbial communities living within our gut play a central role in brain function and development, behavior, and even cognition, including learning and memory. A recent paper outlines how advances in microbial research can be utilized to understand individual […]
t-lymphocyte. white blood cell. Lymphocyte. B-Lymphocyte
Beneficial gut bacteria help determine our ability to fight off infection, but how? Scientists discover that gut bacteria communicate with immune cells and cells lining the intestinal wall to regulate the immune system’s response to infection. Beneficial gut bacteria are responsible for attaching to the intestinal wall and signaling the cellular production of IL-10, a cytokine […]
Artificial Sweeteners Prevent Gut Bacteria From Reproducing
Non-nutritive sweeteners, or artificial sweeteners including Stevia, have bacteriostatic effects that prevent gut bacteria from reproducing and increase Firmucutes in mice. PLOS →Takeaway: Eliminating non-nutritive sweeteners from the diet is an important step in improving microbial health. Even Stevia can be problematic, although derived from a natural source. If you feel the need to sweeten a beverage or […]
variety of prebiotic foods, raw green banana, asparagus, onions, garlic, leeks, berries and green beans for gut health
Prebiotic supplementation could replace the low FODMAPs diet as a treatment for functional gut disorders (IBS, constipation, functional dyspepsia, etc.). A 4-week study compared the effects of a prebiotic supplement plus Mediterranean-type diet, versus a placebo supplement plus low FODMAP diet for 2 weeks. Fecal microbiota composition, intestinal gas production, and digestive sensations were measured outcomes. […]
Stool Processing Techniques Significantly Reduce FMT Efficacy
Common stool processing techniques (such as freeze thawing or blending in oxygen) for fecal microbiota transplantation (FMT) may significantly reduce efficacy of the procedure. Using a process called PMA, which differentiates between dead and live bacteria and discards the DNA data for dead bacteria, scientists found that even when using the best stool processing protocols available, […]
Girl and boy sign post.
Scientists studied the sex-based differences in the intestinal barrier function and gut microbiome of 23 volunteers administered indomethacin (NSAID most commonly prescribed for rheumatoid arthritis and gout). At baseline, healthy women showed lower intestinal permeability and higher microbial diversity than healthy men. While indomethacin increased intestinal permeability in both sexes, only women experienced decreased diversity in […]
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Gut bacteria play a leading role in how well cancer drugs work. Certain gut bacteria (Bifidobacterium specifically) boost people’s response to cancer treatment while others can make immunotherapy ineffective. In addition, previous studies show that those with antibiotic exposure are more likely to have a poor response rate to immunotherapy. Researchers are now testing how to […]
Hair Loss Linked To Gut Bacteria Imbalance
Patterned hair loss could be due to gut bacteria imbalance. Antibiotic-induced dysbiosis, characterized by an overgrowth of Lactobacillus murinus (a gut bacteria strain that depletes biotin – vitamin B7, a nutrient associated with hair growth), in mice fed a biotin deficient diet altered gut metabolic function and resulted in alopecia (or hair loss). When consuming a […]
Does Microbiome Testing Offer An Accurate Picture?
Is your microbiome test giving you an accurate picture? A recent study looked at one of the most well known markers of microbial health – bacterial diversity. The researchers found that taking 5 fecal samples over 5 consecutive days portrays a more accurate picture of microbial diversity than just 1 sample. This study also concluded that when […]
Dr Robynne Chutkan
Dr. Chutkan's Newsletter
Read the latest news and research from Dr. Chutkan’s blog. From the most up to date science on the microbiome, to the best in gut-derived wellness – we are your complete guide to gut health! Sign-up now and receive FREE access to the Gutbliss Food Guide, Meal Plan, & Recipes, which includes all the basics on how to eat to optimize your microbial health.