It works by converting fibers into butyrate. You should maintain a high fiber diet to promote Roseburia in your gut

adrian_b 12 hours ago | parent | next [-]

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.

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sandworm101 12 hours ago | parent [-]

Natural or otherwise, one must wonder if there are similar downsides.

	▲	adrian_b 12 hours ago \| parent [-]
		True.

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functional_dev 28 minutes ago | parent | prev | next [-]

So.. eat more fiber and your gut bacteria will produce butyrate. And that helps muscles.

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DiscourseFan 11 hours ago | parent | prev | next [-]

I've always eaten a ton of fiber, to the point where if I stop I get constipated, and I've always put on muscle fairly easily.

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moffkalast 11 hours ago | parent | prev | next [-]

You know it would be funny if at least once the finding would be "you should eat more hamburgers" or something.

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Jensson 4 hours ago | parent | next [-]

If you go to Somalia I'd bet most of those would be healthier if they started eating more hamburgers, so its context dependent.

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HK-NC 8 hours ago | parent | prev [-]

A home made hamburger can be incredibly healthy.

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array_key_first 5 hours ago | parent [-]

It can be, but it's often not. The thing that makes hamburgers harmful isn't really the "chemicals" or processing or whatever, it's the fact that it's red meat with high amounts of saturated fat.

You would have to use low fat beef, and ideally not beef but turkey.

I think some people think that burgers, fries, steak, and milkshakes are bad for you because they're fast food or restaurant food. No... no that stuff is just bad for you. You'll get a heart attack if you make it at home, too. Just eat it in moderation and eat more vegetables.

	▲	culi 2 hours ago \| parent [-]
		IMHO it's the restaurant. For a variety of reasons but here's just one example of a mechanic: > Repeatedly heated cooking oils (RCO) can generate varieties of compounds, including polycyclic aromatic hydrocarbons (PAH), some of which have been reported as carcinogenic. RCO is one of the commonly consumed cooking and frying medium. These RCO consumption and inhalation of cooking fumes can pose a serious health hazard. https://pubmed.ncbi.nlm.nih.gov/28925728/ Nutrition is complicated and rules of thumb can be really useful even if they sometimes over simplify things. One good rule that has had a ton of research interest into it in the past decade or so is ultra-processed foods. Here's a BMJ review > Greater exposure to ultra-processed food was associated with a higher risk of adverse health outcomes, especially cardiometabolic, common mental disorder, and mortality outcomes. These findings provide a rationale to develop and evaluate the effectiveness of using population based and public health measures to target and reduce dietary exposure to ultra-processed foods for improved human health. They also inform and provide support for urgent mechanistic research. https://www.bmj.com/content/384/bmj-2023-077310

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b65e8bee43c2ed0 11 hours ago | parent | prev [-]

the fiber will promote all bacteria in your gut, not just this particular strain.

	▲	blargey 9 hours ago \| parent [-]
		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.