IsthmusSIBO
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- Joined
- Jul 18, 2026
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Follow-up from original thread posted by @Michael Harrop https://forum.humanmicrobiome.info/threads/an-anti-parasitic-medication-ivermectin-shifted-amazonian-villagers-mi.1378/
Hello, I want to continue from the previous thread because there is no proper entry in the “Interventions” section of the wiki about antiparasitics as there is one for antibiotics, so it seems this was the de facto thread about it until now.
According to this thread, it seems that the consensus on the damage caused by antiparasitics to the microbiome seems mixed in comparison to the effect of antibiotics.
So, just like bacteria, we know some parasites are more beneficial (like some helminths) and others are fully pathogenic.
But… despite the effect of introducing or killing things, it’s not clear to me:
Are antiparasitics safer than antibiotics in a way? It seems we have more bacteria, bacteriophages, viruses, fungi than parasites, so maybe removing parasites is not as dangerous? Specially because of the Hookworm study in the thread saying that uninfected and individuals with abendazole had a similar microbiome, suggesting that healthy peope who hadn’t used the antiparasitic and treated people had more similarities, despite antimicrobial treatment.
Then again, @indigo34 did say that some professionals use weak/“safe” helminths to treat IBD, so there is that.
Still, I am not sure lacking a few parasites is the sole cause of IBD (rather multi-microbe dysbiosis + genetic interactions + diet), and the person who did FMT from HM with Helminths muddied the question even more (personally, I say the FMT helped her/him more
).
Dysbiosis can be many things. All we know is that it presents in two ways, one of the most common being missing microbes. Sadly, with the current literature, nobody can truly say if those missing microbes are always bacteria and phages all of the time. For a few, they could be viruses, fungi, or helminths even, and the success, despite high quality donor being the biggest requirement, can be mediated by what the recipient lacks specifically. Aka, donor matching.
We also know donor matching is not as important as quality. Yet, this issue could still be a missed factor (along with others, like clearing the existing biome) in the the rate of permanent success with a top donor.
Hello, I want to continue from the previous thread because there is no proper entry in the “Interventions” section of the wiki about antiparasitics as there is one for antibiotics, so it seems this was the de facto thread about it until now.
According to this thread, it seems that the consensus on the damage caused by antiparasitics to the microbiome seems mixed in comparison to the effect of antibiotics.
So, just like bacteria, we know some parasites are more beneficial (like some helminths) and others are fully pathogenic.
But… despite the effect of introducing or killing things, it’s not clear to me:
Are antiparasitics safer than antibiotics in a way? It seems we have more bacteria, bacteriophages, viruses, fungi than parasites, so maybe removing parasites is not as dangerous? Specially because of the Hookworm study in the thread saying that uninfected and individuals with abendazole had a similar microbiome, suggesting that healthy peope who hadn’t used the antiparasitic and treated people had more similarities, despite antimicrobial treatment.
Then again, @indigo34 did say that some professionals use weak/“safe” helminths to treat IBD, so there is that.
Still, I am not sure lacking a few parasites is the sole cause of IBD (rather multi-microbe dysbiosis + genetic interactions + diet), and the person who did FMT from HM with Helminths muddied the question even more (personally, I say the FMT helped her/him more
Dysbiosis can be many things. All we know is that it presents in two ways, one of the most common being missing microbes. Sadly, with the current literature, nobody can truly say if those missing microbes are always bacteria and phages all of the time. For a few, they could be viruses, fungi, or helminths even, and the success, despite high quality donor being the biggest requirement, can be mediated by what the recipient lacks specifically. Aka, donor matching.
We also know donor matching is not as important as quality. Yet, this issue could still be a missed factor (along with others, like clearing the existing biome) in the the rate of permanent success with a top donor.
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