Recent content by Michael Harrop

  1. Michael Harrop

    Outcomes For anyone who has done FMT, did you have worsening symptoms in the few days after?

    In my experience, some donors can trigger an initial day-or-so of worsening symptoms before seeing subsequent improvements. With bad donors, they can worsen symptoms and cause new ones, and the symptoms don't go away. It can be difficult to immediately determine which is which. Adequate...
  2. Michael Harrop

    Sources Gezonde Darmflora stool donors have diseases as proven by their blood tests?? Wtf??

    Gezonde Darmflora is already covered in the wiki as a known poor source, so I'm not sure why you seem to have been counting on them. https://humanmicrobiome.info/where-to-get-fmt/ I haven't looked at their tests, but those kinds of blood tests can show current or prior infection. So be sure you...
  3. Michael Harrop

    Study Tiny RNA molecules in sperm have big impact on baby health. Findings provide strong evidence for epigenetic inheritance of paternal environmental effects (Oct 2025) Epididymal dynamics and preimplantation roles of a sperm-enriched 5′ fragment of tRNA-valine

    https://news.ucsc.edu/2026/01/tiny-rna-epigenetic-inheritance/ https://www.cell.com/cell-reports/fulltext/S2211-1247(25)01137-4
  4. Michael Harrop

    FMT Washed microbiota transplantation relieves atopic dermatitis via gut–skin microbiome rebalancing (Jan 2026, n=23)

    https://www.hmpgloballearningnetwork.com/site/thederm/news/washed-microbiota-transplantation-improves-disease-severity-and-microbial https://link.springer.com/article/10.1186/s12866-026-04717-1
  5. Michael Harrop

    Antibiotics The aggressive use of antibiotics could fuel mood disorders and anxiety (Dec 2025, n=175) Consistent decline of acetylcholine in microbiota-gut-brain axis mediates antibiotic-induced anxiety via regulating hippocampus microglial activation

    https://medicalxpress.com/news/2026-01-aggressive-antibiotics-fuel-mood-disorders.html https://www.nature.com/articles/s41380-025-03431-0
  6. Michael Harrop

    Early development The maternal microbiome influence on pregnancy success: breeding comparison of germ-free and conventionalized mice (Jan 2026) "We observed unexpectedly high maternal and offspring mortality in GF animals. Maternal microbiota might influence offspring health far earlier than previously recognized"

    https://www.tandfonline.com/doi/full/10.1080/19490976.2025.2609405
  7. Michael Harrop

    Article A bombshell’: doubt cast on discovery of microplastics throughout human body (Jan 2026) Some scientists say many detections are most likely error, with one high-profile study called a ‘joke’

    https://www.theguardian.com/environment/2026/jan/13/microplastics-human-body-doubt
  8. Michael Harrop

    Other Why FMT specifically? Why focus on the colon microbiota, wouldn't it be better to transplant microbes from every part of the body that they are found in?

    That seems to largely be the case, but I don't think the research is conclusive.
  9. Michael Harrop

    Other Why FMT specifically? Why focus on the colon microbiota, wouldn't it be better to transplant microbes from every part of the body that they are found in?

    Poop contains microbes from the entire digestive tract, including oral microbes. There are different percentages of microbes at different body sites due to the different environments. [1] When you transplant stool into another body site, the percentages of microbes will change due to the...
  10. Michael Harrop

    General health Using AI chatbots for medical advice

    AI chatbots may seem useful, but they are not reliable at all. They are prediction engines that predict the words most likely to come next, based on the data they've been fed (which is often very flawed). They often "hallucinate" or make things up.
  11. Michael Harrop

    FMT A man with auto-brewery syndrome gets relief from faecal transplant (Jan 2026, n=22) Gut microbial ethanol metabolism contributes to auto-brewery syndrome in an observational cohort

    https://www.newscientist.com/article/2510789-man-whose-gut-made-its-own-alcohol-gets-relief-from-faecal-transplant/ https://www.nature.com/articles/s41564-025-02225-y
  12. Michael Harrop

    Other The secret to human intelligence? It might be in our gut. Your gut microbes may have helped build the human brain—and could still be shaping how it works today (Jan 2026) Primate gut microbiota induce evolutionarily salient changes in mouse neurodevelopment

    https://www.sciencedaily.com/releases/2026/01/260105165806.htm https://scitechdaily.com/your-gut-microbes-may-be-quietly-transforming-how-your-brain-works/ https://www.pnas.org/doi/10.1073/pnas.2426232122
  13. Michael Harrop

    Other Vaginal and gut microbiome dysbiosis linked to endometriosis (Dec 2025, n=22) Comprehensive Analysis of Vaginal and Gut Microbiome Alterations in Endometriosis Patients

    https://www.contemporaryobgyn.net/view/vaginal-and-gut-microbiome-dysbiosis-linked-to-endometriosis https://www.dovepress.com/comprehensive-analysis-of-vaginal-and-gut-microbiome-alterations-in-en-peer-reviewed-fulltext-article-IJWH I've contacted lots of women with endometriosis about this...
  14. Michael Harrop

    Causation A molecule produced by gut bacteria can trigger atherosclerosis (Jul 2025, n=400) Imidazole propionate is a driver and therapeutic target in atherosclerosis

    https://www.gutmicrobiotaforhealth.com/scientists-discover-that-a-gut-microbiota-molecule-causes-atherosclerosis/ https://www.nature.com/articles/s41586-025-09263-w
  15. Michael Harrop

    How does regular valtrex use impact microbiome?

    For that kind of thing, you can search pubmed or google scholar for "[drug name] microbiome". Valtrex is an antiviral, so not something I'd be especially concerned about when it comes to the microbiome.
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