Did quick research on how to support the bacteria growth
> Dietary modifications that emphasize high-fiber and prebiotic foods and dietary supplements may support the healthy growth of Roseburia [1]
> As stated above, a Mediterranean diet is associated with increased Roseburia growth. This diet emphasizes primarily plant-based foods: whole fruits and vegetables, whole grains, legumes, nuts and seeds, olive oil, and fatty fish. The high fiber and resistant starch content of these foods may fuel Roseburia and the other beneficial flora of the human microbiome [1]
> Polyphenols are plant compounds abundant in fruits, vegetables, tea, and coffee. Emerging research indicates that polyphenols can enhance Roseburia abundance indirectly by inhibiting harmful bacteria and fostering beneficial ones. [2]
I wish scientists would be more open about how little they understand digestion and nutrition, particularly on an individual level. Advice gets presented as an if-then, when it's not.
It is known that the bacteria that produce high amount of butyrate are beneficial, e.g. by decreasing the risk of colon cancer, but this does not seem sufficient to explain the increase in muscle strength that seems to be caused by this species alone.
The study has first found in humans a correlation between muscle strength and the presence of this bacterium. Then they have attempted to determine whether this correlation is due to a causal relationship by killing the gut bacteria in mice, then feeding them with this kind of human gut bacteria. The result was an increased muscle strength, which seems to confirm causality.
How the bacteria increase muscle strength remains unknown. I think that a possible explanation may be that this bacterium produces some substance that mimics a human hormone, e.g. a steroid, in which case it would be a kind of natural doping.
All fiber-consuming gut bacteria, yes - but that's basically synonymous with "good"/beneficial gut bacteria, so it's good advice even if it doesn't give people the massive gainz they might have been hoping for.
Every few months there's a new study showing gut bacteria control yet another thing we thought was "us." Mood, cognition, immune response, and now muscle strength. Starting to wonder what's even left.
> This opens up the possibility that the bacterium under investigation could be used as a probiotic to help preserve muscle strength during aging
Maybe, but it's really hard to control for other variables here. They don't know what's causing this bacteria to diminish over time in older adults in the first place.
It could totally just be dietary habits getting worse over time as people let themselves go. Regardless of age, most people already don't eat enough protein and when they do they might not be getting "complete" proteins either (missing amino acids is common with plant-based foods).
For me personally, as I've gotten older I have continued to eat better and more consistently than I ever did earlier in life. I think the long term study of your own life tends to show you that diet is one of, if not the, primary factor in short and long term health and well being.
Perhaps there is also a direct correlation between this microbiome and longevity in the so-called "blue zones" of the world like Okinawa, Sardinia etc.
IIRC there are several of the "Blue Zones" where just bad government records. (People who had incorrect birth dates, or had already died and the government just didn't know about it)
Jose DeSanquin Demarco of Bolivia is now the world’s oldest man at 117, he attributes his health to 10 hours daily in the sun and fields farming quinoa.
Photographed here, Jose’s 90 year old wife holds their newborn twins.
Beer is basically fermented sugar (well, glucose converted to ethanol by yeast, for the most part; though its maltose first, yeast, bacteria etc... prefer glucose and maltose is a disaccharide of glucose: Maltose).
Pretty sure Duff was a heavily filtered macro beer.
Not saying engineered beer is necessarily bad- Sapporo and Asahi never disappoint- but I imagine you would want to stick to unfiltered and unpasteurized to retain some of the more… alive compounds.
This is why I tell my gym bros that they should quit all that Celsius garbage and stick to the basics. You should measure your gut health by the quality of your feces (consistency, texture, colour, shape), and then your muscles and rest of your body will thank you. This research is evidence of that. The science is still catching up.
Fun fact: in Germany most toilets have a built in 'inspection plate' so you can look at your shit before you flush it. In other places I often found it hard to judge the quality because you can't even see it well or it gets flushed instantly
It's literally in the bowl you were just sitting in. I'm not sure where the inspection plate goes. Is this an AI saying this? Is the rest of the thread AIs? Is this all made up. What's happening!?
I thought learning about bidets was a new experience, now inspection plates?!
It is so wonderful to hear someone else say this. My spouse and friends think In so weird for emphasizing optimizing your diet for things that digest well, macro dense and give you good shits. I am quietly pleased when my own looks completely normal and uninteresting.
They have found first a correlation between the presence of this species of bacteria and muscle strength in humans.
Then they have made an attempt to determine whether this correlation reflects a causal relationship.
So they have fed mice previously treated with antibiotics, to remove their own gut bacteria, with this kind of bacteria extracted from humans.
They have indeed seen an increase in muscular strength at the mice that have received the human bacteria, which seems to confirm causality between the presence of this bacterium and muscle strength.
While they have also determined the biochemical changes in muscles that have caused increased strength, the mechanism of how the bacteria have influenced that remains a mystery. Perhaps this bacterium produces some substance that mimics a human hormone, e.g. a steroid.
If we wanted to we could either make super mice. Or have a great head start on really unethical but impressive human health progress… that just comes from all the horrible human testing that would be necessary.
> Dietary modifications that emphasize high-fiber and prebiotic foods and dietary supplements may support the healthy growth of Roseburia [1]
> As stated above, a Mediterranean diet is associated with increased Roseburia growth. This diet emphasizes primarily plant-based foods: whole fruits and vegetables, whole grains, legumes, nuts and seeds, olive oil, and fatty fish. The high fiber and resistant starch content of these foods may fuel Roseburia and the other beneficial flora of the human microbiome [1]
> Polyphenols are plant compounds abundant in fruits, vegetables, tea, and coffee. Emerging research indicates that polyphenols can enhance Roseburia abundance indirectly by inhibiting harmful bacteria and fostering beneficial ones. [2]
[1] https://www.rupahealth.com/post/roseburia-spp-101
[2] https://www.innerbuddies.com/pages/gut-microbiome-101/gut-ba...
I wish scientists would be more open about how little they understand digestion and nutrition, particularly on an individual level. Advice gets presented as an if-then, when it's not.
The study has first found in humans a correlation between muscle strength and the presence of this bacterium. Then they have attempted to determine whether this correlation is due to a causal relationship by killing the gut bacteria in mice, then feeding them with this kind of human gut bacteria. The result was an increased muscle strength, which seems to confirm causality.
How the bacteria increase muscle strength remains unknown. I think that a possible explanation may be that this bacterium produces some substance that mimics a human hormone, e.g. a steroid, in which case it would be a kind of natural doping.
0. https://webshop.dsmz.de/en/bacteria/Roseburia-inulinivorans....
Maybe, but it's really hard to control for other variables here. They don't know what's causing this bacteria to diminish over time in older adults in the first place.
It could totally just be dietary habits getting worse over time as people let themselves go. Regardless of age, most people already don't eat enough protein and when they do they might not be getting "complete" proteins either (missing amino acids is common with plant-based foods).
https://en.wikipedia.org/wiki/Roseburia_inulinivorans
We are what we eat.
Photographed here, Jose’s 90 year old wife holds their newborn twins.
putting together a theory on how bacteria organized multicellular life to exploit our macro-movements and proliferate between damp spots
Beer is basically fermented sugar (well, glucose converted to ethanol by yeast, for the most part; though its maltose first, yeast, bacteria etc... prefer glucose and maltose is a disaccharide of glucose: Maltose).
Not saying engineered beer is necessarily bad- Sapporo and Asahi never disappoint- but I imagine you would want to stick to unfiltered and unpasteurized to retain some of the more… alive compounds.
Fun fact: in Germany most toilets have a built in 'inspection plate' so you can look at your shit before you flush it. In other places I often found it hard to judge the quality because you can't even see it well or it gets flushed instantly
I thought learning about bidets was a new experience, now inspection plates?!
I thought I understood this part of my life.
scared and confused
They have found first a correlation between the presence of this species of bacteria and muscle strength in humans.
Then they have made an attempt to determine whether this correlation reflects a causal relationship.
So they have fed mice previously treated with antibiotics, to remove their own gut bacteria, with this kind of bacteria extracted from humans.
They have indeed seen an increase in muscular strength at the mice that have received the human bacteria, which seems to confirm causality between the presence of this bacterium and muscle strength.
While they have also determined the biochemical changes in muscles that have caused increased strength, the mechanism of how the bacteria have influenced that remains a mystery. Perhaps this bacterium produces some substance that mimics a human hormone, e.g. a steroid.
Paywalled research article: https://gut.bmj.com/content/early/2026/03/03/gutjnl-2025-336...