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  1. Michael Harrop

    Diet Gluten sensitivity linked to gut–brain interaction, not gluten itself (Oct 2025, review) Non-coeliac gluten sensitivity

    https://medicalxpress.com/news/2025-10-gluten-sensitivity-linked-gutbrain-interaction.html https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(25)01533-8/abstract
  2. Michael Harrop

    FMT The Super-Donor Phenomenon in Fecal Microbiota Transplantation (Jan 2019, review)

    Comment from a previous thread: Another user mentioned that this should be common sense, which I agree with, and have been surprised at the amount of people arguing against it. Personally I would think it would also be common sense for the universities doing FMT studies and other microbiome...
  3. Michael Harrop

    FMT The Super-Donor Phenomenon in Fecal Microbiota Transplantation (Jan 2019, review)

    https://www.frontiersin.org/articles/10.3389/fcimb.2019.00002/full An important paper to have submitted here. Unfortunately, the authors of this review didn't bother to attempt to find a super-donor for their FMT trial...
  4. Michael Harrop

    FMT Fecal Transplant From The Rock Causes Mysterious Side Effects in Man (Oct 2025)

    https://the-peel.com/article/1723/ This doesn't seem to be a real story. See their "about" page: https://the-peel.com/about/ Their bluesky says "on the mission to deliver news before it happens".
  5. Michael Harrop

    FMT Scientists develop a way to track donor bacteria after fecal microbiota transplants (Oct 2025) Long-read metagenomics for strain tracking after faecal microbiota transplant

    https://medicalxpress.com/news/2025-10-scientists-track-donor-bacteria-fecal.html https://www.nature.com/articles/s41564-025-02164-8
  6. Michael Harrop

    Sources I am considering going to IPPM clinic to do an FMT. Would you do it?

    The wiki has a section on them: https://humanmicrobiome.info/where-to-get-fmt/#ippm-clinic No, I would not use them.
  7. Michael Harrop

    Worse after FMT

    Extremely unlikely. This is why I've spent the past 10 years warning people about using low-quality donors, and the poor donor screening & selection at hospitals, clinical trials, and stool banks.
  8. Michael Harrop

    Worse after FMT

    In general, it seems like the only way to recover from a bad FMT is to do FMT from a better donor. Where did you get the FMT? From a hospital, using their donor? They did it for IBS? Was it part of a clinical trial?
  9. Michael Harrop

    Shipping FMT within Canada.

    Yes, I think Fedex is the easiest option.
  10. Michael Harrop

    FMT Shaping the future of probiotics, live biotherapeutic products, and fecal microbiota transplantation: 30 scientific recommendations from the CHINAGUT Conference (Oct 2025)

    https://onlinelibrary.wiley.com/doi/10.1002/imt2.70083 This is incredibly depressing. Not a single mention of donor quality, and they're promoting the failed & inadequate stool bank model.
  11. Michael Harrop

    FVT Effects of lyophilised faecal filtrate compared with lyophilised donor stool on Clostridioides difficile recurrence: a multicentre, randomised, double-blinded, non-inferiority trial (Sep 2025, n=138) "supporting the crucial role of live microbes in mediating clinical efficacy"

    https://www.thelancet.com/journals/langas/article/PIIS2468-1253%2825%2900190-6/abstract A previous study indicated that a sterile fecal filtrate was effective for C. diff. https://humanmicrobiome.info/fmt/#sterile-fecal-filtrate This study says otherwise.
  12. Michael Harrop

    Donors Does stool donor sex and age matter? Are there differences in receiving fecal transplants (FMT) from male vs. female donors? And different age groups and enterotypes? Donor matching

    If you mean studies supporting your claim, you need to cite them. As you note, I already commented on that anecdote and debunked the claim.
  13. Michael Harrop

    Donors Does stool donor sex and age matter? Are there differences in receiving fecal transplants (FMT) from male vs. female donors? And different age groups and enterotypes? Donor matching

    Is there? I only know of one rat study that showed problems. There's a huge body of human data saying otherwise.
  14. Michael Harrop

    Donors Stool donor with family history of colon cancer

    What criteria? https://humanmicrobiome.info/cancer/ You can see there is plenty of basis for concern that you may "transplant a biome that supports the development of cancer". It's largely unknown. FMT is all about risk vs reward, and family history is an added risk.
  15. Michael Harrop

    Diet/nutrition Best probiotics, vitamins, and minerals for J-pouch to reduce BM frequency

    Did you review the probiotic guide? https://humanmicrobiome.info/probiotic-guide/ FMT would be the most effective option, but it's not going to be widely available from safe & effective donors unless people start taking action...
  16. Michael Harrop

    Article Protein Powders and Shakes Contain High Levels of Lead. Consumer Reports investigation (Oct 2025)

    https://www.consumerreports.org/lead/protein-powders-and-shakes-contain-high-levels-of-lead-a4206364640/
  17. Michael Harrop

    Healthcare system Incoming trump admin with RFK signals new start for FDA

    And when ARPA-H doesn't respond, you go to their boss, no? Tell him that his agencies are dropping the ball regarding his agenda? That's what I did.
  18. Michael Harrop

    Healthcare system Incoming trump admin with RFK signals new start for FDA

    As I've already stated, this is wrong, and numerous Senators have concurred that it's largely up to RFK. Part of your argument above was that RFK doesn't care about it. That's irrelevant to whether it's his responsibility. He is the head of numerous agencies that should be solving the problem...
  19. Michael Harrop

    Article Trump admin links Tylenol/acetaminophen use in pregnancy to increased risk of autism despite mixed studies (Sep 2025)

    Autism ‘highly likely’ linked to Tylenol and circumcision, RFK Jr. says (Oct 9, 2025) https://www.kgns.tv/2025/10/09/autism-highly-likely-linked-tylenol-circumcision-rfk-jr-says/ https://www.france24.com/en/live-news/20251009-rfk-jr-pushes-fringe-claim-linking-autism-to-circumcision
  20. Michael Harrop

    Blog The FDA and FMT regulation, part 2. (Jul 2024, HumanMicrobes.org) I met with the FDA. Here's what I shared with them, and their response.

    There are protestors, but they seem focused on their specific issue (RFK's "anti-vax" tendencies, anti-vax). A person would have to walk down the huge line, talking to every person, while having someone keep their spot in line. I have not been able to do that. Feel free to attend the next...
  21. Michael Harrop

    Video RFK Jr. hosts roundtable on long COVID (Sep 18, 2025)

    So are you reaching out to those groups about the current situation? In your previous comment. It's already in the link I shared. So you're telling me to switch to doing what I'm already doing. This is a deceptive statement. There is plenty of support for FMT as an actual intervention. This...
  22. Michael Harrop

    Healthcare system Incoming trump admin with RFK signals new start for FDA

    I am not sure where his support base is. When I went to his Congressional hearings, the hundreds of people there supporting him were almost all from a superpac to elect him, and they weren't interested in why I was there. I agree that it would be useful to try to find and talk to his...
  23. Michael Harrop

    Video RFK Jr. hosts roundtable on long COVID (Sep 18, 2025)

    No clue. My experience with patient groups over the past 10 years is that 99.9% of people in them do not care. They are there to complain, not to strive for solutions. One person on this forum posted in a bunch of reddit groups and the posts got thousands of votes, comments, and views and no...
  24. Michael Harrop

    Blog The FDA and FMT regulation, part 2. (Jul 2024, HumanMicrobes.org) I met with the FDA. Here's what I shared with them, and their response.

    You already forgot that I'm 6'8"? I did in the past, and it was not useful. I was too tired this time. In the past, no one cared. They were there for their own purpose and didn't care why anyone else was there, even if on the surface it seemed like we were there for similar reasons. Hundreds...
  25. Michael Harrop

    Enhancing fmt reduced to less than 1% as effective as it used to be after i started taking high amounts of inulin daily years ago (reason likely being severely damaging my gut mucus layer)

    I didn't say that. I discussed it here a bit more.
  26. Michael Harrop

    Oral microbiome - Streptococcus overgrowth (test results)

    This is not evidence-based. As previously pointed out, current knowledge does not allow one to make these kinds of inferences. Doing so is spreading misinformation.
  27. Michael Harrop

    Video RFK Jr. hosts roundtable on long COVID (Sep 18, 2025)

    https://www.hhs.gov/press-room/hhs-secretary-kennedy-long-covid-roundtables-action.html https://www.youtube.com/watch?v=NzGbNCAzkcI This video makes this administration seem like a big fucking scam. All the big players in this video know about the gut microbiome and FMT, including Senator...
  28. Michael Harrop

    Article RFK Jr's MAHA project funnels millions from public health to private wellness industry (Jun 2025) MAHA’s Goal Is Not Health. Robert Kennedy’s movement promises more privatization

    If you're implying that FMT is not the magic fix because the one donor you used didn't work well, that's not rational or evidence-based.
  29. Michael Harrop

    Article RFK Jr's MAHA project funnels millions from public health to private wellness industry (Jun 2025) MAHA’s Goal Is Not Health. Robert Kennedy’s movement promises more privatization

    NYT just published a video on it too: https://www.youtube.com/watch?v=PTpf1QdgnDE https://www.nytimes.com/2025/09/09/opinion/maha-health-wellness-influencers.html NYT's "solution" at 4:10 is bullshit too though.
  30. Michael Harrop

    Other What is the public perception of FMT? How much does it matter? Has it been blocking progress?

    1. I already did to the appropriate degree. 2. Any more so would be an absurd demand to make in the context of what I described in my last comment. Essentially demanding me to "feed the troll".
  31. Michael Harrop

    Other What is the public perception of FMT? How much does it matter? Has it been blocking progress?

    You are wrong on all accounts. You made a bunch of erroneous assumptions in order to reach a negative conclusion. Then, when you are told that your assumptions were wrong, you persist. That is the behavior of a troll.
  32. Michael Harrop

    Other What is the public perception of FMT? How much does it matter? Has it been blocking progress?

    The first half of your comment is erroneous because he wasn't some random stranger. Yes, it's very frustrating that people have come to accept disease as normal. My lack of expression is due to my poor health. I've been bed-bound & homebound for the past decade. What I've been doing in DC for...
  33. Michael Harrop

    The power of olive oil -- significant changes to gut microbiome, stool, and food tolerances

    Everything modifies the microbiome. I don't think it would be useful to do that. I think the closest thing is the American Gut study.
  34. Michael Harrop

    Enhancing fmt reduced to less than 1% as effective as it used to be after i started taking high amounts of inulin daily years ago (reason likely being severely damaging my gut mucus layer)

    1. You changed donors, so your assessment is not valid. 2. You're not "killing off bacteria" with inulin. By inducing diarrhea, you're temporarily clearing out problematic microbes. But constantly having diarrhea is not sustainable, and thus also comes with detriments. What changed from your...
  35. Michael Harrop

    Procedure DIY FMT Beginner's Questions

    Search it on the FMT wiki page. https://humanmicrobiome.info/fmt/
  36. Michael Harrop

    Blog The FDA and FMT regulation, part 2. (Jul 2024, HumanMicrobes.org) I met with the FDA. Here's what I shared with them, and their response.

    I've been posting videos to Twitter and other social media for the past few weeks and no one is interacting with the tweets, and the videos are getting very few views. The accounts are linked at the top right of the page: https://www.humanmicrobes.org/
  37. Michael Harrop

    FMT Assessing healthcare workers as potential stool donors for faecal microbiota transplantation: a cross-sectional study of antimicrobial-resistant gut bacteria and enteropathogenic microorganisms (Sep 2025, n=106) "supports the inclusion of HCWs as potential stool donors for FMT"

    https://www.journalofhospitalinfection.com/article/S0195-6701(25)00277-4/abstract Previous guidelines have recommended against using healthcare workers as donors. This study indicates otherwise.
  38. Michael Harrop

    Donors Thoughts on HumanMicrobes donor problem

    There are ways people can help here: https://forum.humanmicrobiome.info/threads/the-fda-and-fmt-regulation-part-2-jul-2024-humanmicrobes-org-i-met-wit.520/#post-1370 The majority of information out there is poor, so I don't think combining it is a good idea. The best info is in the wiki...
  39. Michael Harrop

    Study Obesity during pregnancy doubles autism risk and increases ADHD risk by up to 57% (Sep 2024, n=3.6m mother-child pairs) Associations between maternal preconception and pregnancy adiposity and neuropsychiatric and behavioral outcomes in the offspring: A systematic review and meta-analysis

    https://www.unisa.edu.au/media-centre/Releases/2024/obesity-in-mums-doubles-the-risk-of-autism-in-babies/ https://www.sciencedirect.com/science/article/pii/S0165178124004347 Relevant due to the recent RFK/Trump announcement blaming Tylenol. Rhonda Patrick alerted me to this.
  40. Michael Harrop

    Article Trump admin links Tylenol/acetaminophen use in pregnancy to increased risk of autism despite mixed studies (Sep 2025)

    RFK Jr.’s Team Wanted to Tout an Autism Therapy. He Went After Tylenol Instead. A meeting with Tylenol’s maker convinced Kennedy to put the emphasis on acetaminophen (Sep 24, 2025) https://www.wsj.com/health/healthcare/tylenol-autism-rfk-jr-trump-administration-split-a1ad44fc -...
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