#gut-microbiota
Toxicologist here! Not a dentist but I treat fluoride toxicity, & it has never been from a dental product. National data reflects this.

Saying fluoride “causes gut harms” is a lie. Ingesting ANYTHING can affect gut microbiota, including dinner! That is not a health outcome let alone a negative one
npr.org NPR @npr.org · May 24
The agency is taking steps to remove prescription fluoride products that children swallow. But researchers who study fluoride say it's not harmful and some kids need the treatments.
FDA alleges fluoride supplements cause gut harms. Scientists aren't convinced
The agency is taking steps to remove prescription fluoride products that children swallow. But researchers who study fluoride say it's not harmful and some kids need the treatments.
www.npr.org
May 24, 2025 at 9:49 PM
Did you know there are 3 mechanisms for hunger, and one is gut microbiota driven?
January 26, 2025 at 3:38 PM
Surprising and notable if it holds up in humans: Extending ovary function and fertility via gut microbiome (fecal) transplant from young mice to old. estropausal mice

"a direct link between the gut microbiota and ovarian health"

www.nature.com/articles/s43...
Estropausal gut microbiota transplant improves measures of ovarian function in adult mice - Nature Aging
To investigate the link between the gut microbiome and ovarian health, here the authors transplant gut microbiota from estropausal female mice to young adult female mice. Microbial transplantation imp...
www.nature.com
March 3, 2026 at 3:25 PM
Gut microbiota regulates stress responsivity via the circadian system - our latest paper just out - well done Gabriel Tofani & all
www.cell.com/cell-metabol...
Gut microbiota regulates stress responsivity via the circadian system
Gut microbes are known to modulate stress responsivity and behavior. Tofani et al. demonstrate that such modulations occur via the circadian system. The oscillations in gut microbiota composition regu...
www.cell.com
November 5, 2024 at 8:41 PM
Gut microbiota protect against colorectal tumorigenesis through lncRNA Snhg9

"Antibiotics can accelerate colorectal cancer progression by inducing microbiota depletion"

www.cell.com/developmenta...
January 4, 2025 at 2:49 AM
Very happy to share this study from our group and colleagues now out in Science!
We found that in zebrafish, before the immune system is mature, gut epithelial cells perform immune functions by producing the cytokine IL-22 to shape the microbiota to promote early life gut function
#Zebrafish #Gut
IL-22 from enteroendocrine cells promotes early-life gut motility in zebrafish through the microbiota
The gut microbiota, immune system, and enteric nervous system interact to regulate adult gut physiology. However, the mechanisms establishing gut physiology during development remain unknown. We repor...
www.science.org
April 3, 2026 at 2:55 AM
The gut microbiota is essential for maintaining female fertility

go.nature.com/46OM03J
Gut microbiota keeps watch over future egg cells
Certain gut bacteria help to extend the reproductive lifespan of female mice, experiments show.
go.nature.com
October 1, 2025 at 2:47 PM
The gut microbiota is essential for maintaining female fertility

go.nature.com/42KObnN
Gut microbiota keeps watch over future egg cells
Nature - Certain gut bacteria help to extend the reproductive lifespan of female mice, experiments show.
go.nature.com
October 5, 2025 at 11:37 AM
Gut microbiota primes stroke severity via the AHR in intestinal dendritic cells @cellcellpress.bsky.social
www.cell.com/cell/fulltex... @lmu.de
September 30, 2026 at 4:12 PM
🚨by Hiroshi Yasuda @Yash25571056 about gut microbiome & Covid:

"SIM01 (a gut microbiota-derived synbiotic formula) hastened antibody formation against SARS-CoV-2, reduced nasopharyngeal viral load, reduced pro-inflammatory immune markers, & restored..."

Short 🧵:
threadreaderapp.com/thread/19601...
August 27, 2025 at 1:54 PM
Interesting look at gut strain-level dynamics: The human gut has low strain variation compared to other environments and has a limited capacity for strain richness. #microbiome

www.nature.com/articles/s41...
Gut microbiota strain richness is species specific and affects engraftment - Nature
Strain richness of gut microbiota ecosystems is a key characteristic underpinning engraftment in faecal microbiota transplantation, and could improve the design of defined live biotherapeuti...
www.nature.com
November 28, 2024 at 3:00 PM
can you really be lonely if you have hundreds of gut microbiota species living inside you?
July 14, 2024 at 7:21 PM
🫀 Gut–heart connection

A new review shows how gut microbiota shifts in heart failure, with harmful bacteria and metabolites worsening disease. Targeting gut balance may aid treatment.

🔗 www.sciencedirect.com/science/arti...

#SciComm #Microbiome 🧪
Decoding the impact of gut microbiota on heart failure
Decreased cardiac output in heart failure leads to intestinal ischemia and increased permeability. Substantial changes occur in the gut microbiota, ch…
www.sciencedirect.com
August 17, 2025 at 8:33 PM
Despite cuts in cancer research funding, advances continue.

We are so close to eradicating cancer.

A single bacterial dose from frog gut microbiota eliminated tumors in mice.

We need funds to continue research. This is personal.

#ProudBlue #ProScience

scitechdaily.com/naturally-oc...
Naturally Occurring Bacteria Completely Eradicate Tumors in Mice With a Single Dose
A bacterium from frog gut microbiota eliminated tumors in mice by selectively colonizing tumors and triggering both direct cell killing and immune-driven anticancer responses.
scitechdaily.com
April 11, 2026 at 1:23 PM
Gut microbiota strain richness (SR) varies by species & is transferred via fecal transplant. Most species have low SR in the gut. #MicrobiomeResearch PMID:39604726, Nature 2025, @Nature https://doi.org/10.1038/s41586-024-08242-x #Medsky #Pharmsky #RNA #ASHG #ESHG 🧪
Gut microbiota strain richness is species specific and affects engraftment | Nature
Despite the fundamental role of bacterial strain variation in gut microbiota function1–6, the number of unique strains of a species that can stably colonize the human intestine is still unknown for almost all species. Here we determine the strain richness (SR) of common gut species using thousands of sequenced bacterial isolates with paired metagenomes. We show that SR varies across species, is transferable by faecal microbiota transplantation, and is uniquely low in the gut compared with soil and lake environments. Active therapeutic administration of supraphysiologic numbers of strains per species increases recipient SR, which then converges back to the population average after dosing is ceased. Stratifying engraftment outcomes by high or low SR shows that SR predicts microbial addition or replacement in faecal transplants. Together, these results indicate that properties of the gut ecosystem govern the number of strains of each species colonizing the gut and thereby influence strain
doi.org
April 10, 2025 at 6:50 AM
#Throwback 🧪

REVIEW | Feeding gut microbes to nourish the brain: unravelling the diet–microbiota–gut–brain axis

@elizschneider.bsky.social‬, ‪@jfcryan.bsky.social et al
Feeding gut microbes to nourish the brain: unravelling the diet–microbiota–gut–brain axis - Nature Metabolism
This Review provides an overview of the interplay between host diet and the gut microbiota, and how this affects brain function.
www.nature.com
December 31, 2025 at 7:08 PM
The 3 different mechanisms that drive hunger
From an excellent new review article
@nejm.org
Deconvoluting the gut microbiota circuity role is a work in progress
nejm.org/doi/full/10....
January 22, 2025 at 10:10 PM
The gut microbiota: an amazing technicolour dream coat or the emperor's new clothes? physoc.onlinelibrary.wiley.com/doi/full/10.... - an excellent corrective to the relentless hype
The gut microbiota: an amazing technicolour dream coat or the emperor's new clothes?
Click on the article title to read more.
physoc.onlinelibrary.wiley.com
March 4, 2025 at 9:51 AM
We are thrilled to share that our paper entitled "Inference of the demographic histories and selective effects of human gut commensal microbiota over the course of human history" is officially out in MBE! academic.oup.com/mbe/advance-...
Inference of the demographic histories and selective effects of human gut commensal microbiota over the course of human history
Abstract. Despite the importance of gut commensal microbiota to human health, there is little knowledge about their evolutionary histories, including their
academic.oup.com
January 24, 2025 at 6:14 PM
Colonization resistance against Clostridioides difficile is a graded, microbiota-intrinsic property of healthy human gut communities academic.oup.com/ismehm/artic...
Colonization resistance against Clostridioides difficile is a graded, microbiota-intrinsic property of healthy human gut communities
Abstract. The success of fecal microbiota transplantation and live biotherapeutic products in preventing recurrent Clostridioides difficile infection demon
academic.oup.com
October 1, 2026 at 11:38 AM
From Canada:

The gut microbiota promotes pain in fibromyalgia

www.cell.com/neuron/fullt...

"Transplanting gut microbiota from women with fibromyalgia into mice induces pain. It also induces immune activation, metabolomic changes, and reduced skin innervation"

#Fibromyalgia #FMS
May 4, 2025 at 1:29 PM
New paper from the lab out in Cell Systems. “Spatiotemporal dynamics during niche remodeling by super-colonizing microbiota in the mammalian gut”
www.cell.com/cell-systems...
Spatiotemporal dynamics during niche remodeling by super-colonizing microbiota in the mammalian gut
Fecal microbiota transplantation (FMT) therapies hold promise but suffer from variable transplantation efficiencies. Here, we examine microbiome spatiotemporal dynamics post-FMT with a super-colonizin...
www.cell.com
November 17, 2024 at 6:41 PM
To restore the gut microbiome after antibiotics, the right diet (rich in carbohydrates, low in fat) was a better approach than fecal microbial transplants (in the experimental model)
www.nature.com/articles/s41...
www.nature.com/articles/d41...
Diet outperforms microbial transplant to drive microbiome recovery in mice - Nature
Experiments in mouse models show that proper recovery of the intestinal microbiota following depletion, with or without faecal microbiota transplant therapy, is dependent on syntrophic interactions th...
www.nature.com
April 30, 2025 at 6:57 PM