Gut Microbes Causing Gout or is it Metabolic Syndrome?

Subtitle: Does it even matter which came first (the chicken or the egg)?

I’d like to thank u/jotii (Reddit User) for raising a very good point on a recent Reddit thread in r/gout.

I do believe that the metabolic factors is a part of the puzzle for sure, for some bigger than others. But it is obvious that there are yet some missing pieces that we don’t understand yet and are to be discovered in the future. I strongly believe in the microbiome as a potent factor (which is of course connected to metabolism), read more in this study about microbiome and gout and genes is probably another.

u/jotii, r/gout, Is allo for life?, 2/10/2022

Love the fact that u/jotii provided a link to a study that gave me another viewpoint to consider. It also gave me some evening reading. A few evenings actually, as I read it a few times.

The Study: Intestinal Microbiota Distinguish Gout Patients from Healthy Humans

  • The study itself was about a new way to clinically diagnose gout more accurately, and earlier, than testing uric acid, which may have its shortcomings.
  • There seems to be a role for specific bacteria in the microbiome in breaking down uric acid into urea so that it can be excreted in urine. These appear to be Faecalibacterium prausnitzii, Clostridium (which produce butyrate in the gut) and Bifidobacterium pseudocatenulatum.
  • If these bacteria are in short supply then the breakdown of uric acid to urea may fail to occur, resulting in high uric acid and gout.
Could a shortage of beneficial bacteria in the gut be preventing the breakdown of uric acid to urea?

This is what really caught my eye:

On the pathway of purine metabolism, the xanthine dehydrogenase which can degrade the purine to uric acid was enriched in the gout patients, whereas the allantoinase that degrades the uric acid to urea was depleted. Thus it is possible that in the intestinal microbiota of gout patients, a significant amount of purine were degraded to uric acid which however could not be further degraded to urea, leading to abnormal accumulation of uric acid in gout patients.

Guo, Z., Zhang, J., Wang, Z. et al. Intestinal Microbiota Distinguish Gout Patients from Healthy Humans. Sci Rep 6, 20602 (2016). https://doi.org/10.1038/srep20602

This is a tantalizing bit of information and drives me in two directions. First, does it matter? Second, can you do something to improve the gut microbiome futher?

Is it the Metabolic Syndrome or the Screwed Up Microbiome? Does the answer change the approach to curing gout?

My overarching theory is that most people (maybe not all) end up with gout because of a poor diet and the resulting metabolic syndrome. And that dumping the Standard American Diet and improving metabolic health will cure gout. Taking medication for gout is simply providing temporary coverage of symptoms. That relying on medication alone will still leave you with a constellation of other health problems down the road.

So on the one hand we have studies to show that metabolic syndrome is closely associated with gout (and Type 2 Diabetes, and Heart Disease, and and and…). Metabolic syndrome impairs the function of liver and kidneys and therefore impairs the ability of the body to properly handle and get rid of excess purines and uric acid.

On the other hand, the microbiome of gout sufferers may not have enough of the microbes necessary to break down uric acid to urea. But what causes a screwed up microbiome? It can be lots of things but, chief among them are alcohol, processed carbs and sugars. In other words, bad diet that pushes you further toward diagnosed metabolic syndrome. But it’s a spectrum, not an on/off. You likely just have a lesser degree of, but still worsening, metabolism until you are finally diagnosed with metabolic syndrome – usually at the same time you are told you have Type 2 Diabetes and need insulin for life. (Don’t believe this).

A meal of pork, asparagus, and tomatoes.

The microbiome is highly impacted by what we eat. Metabolic syndrome is highly impacted by what we eat. If we get rid of the highly processed carbs and seed oils and eat real food BOTH our metabolism and our gut microbiome improve naturally. So… while the distinction may be of interest to scientists does it change our approach? My vote is no!

Can You Improve Gut Microbiome to Improve Uric Acid to Urea Conversion?

Did you know the human body has 10 times the number of microorganisms than it has human cells (according to the U.S. National Institutes of Health)? They are all over our skin but even more live in our gut. If you think the quality of our diets is irrelevant, its time to rethink that assumption.

If you believe gut microbes can indeed be part of the solution to improving uric acid excretion (and I’m leaning that way) then what can you do?

A reminder, the single biggest thing you can do to improve your long term prospects for curing gout is to get to a truly healthy diet. But, next, it would seem there is case to be made for eating foods that help nourish Faecalibacterium prausnitzii, Clostridium, and Bifidobacterium pseudocatenulatum.

There are at least two studies showing that Faecalibacterium prausnitzii and Bifidobacterium pseudocatenulatum can be increased by adding certain types of fiber to the diet (See Notes 1, 2 at Bottom). Specifically, these studies highlight inulin. While you can get inulin by itself I’m not a fan of highly processed foods (e.g. a package of inulin).

Garlic Varieties - Might garlic help improve uric acid breakdown and excretion?

Turns out inulin is also available naturally in fruits and plants such as chicory roots, wheat, onion, banana, garlic, and leek. I’m still focused on improving my metabolic flexibility and reducing my overall insulin, gut permeability, and blood glucose so I’ll skip the wheat and banana. However, I’m all in to add onion, garlic, and leek to my diet. These foods *may* help my gut bacteria and they will also provide sources of beneficial nutrients that I hope will help my bone mineral density.

One last note for consideration… Yet another study with mice showed that Far Infrared Radiation exposure produced a significant increase in Clostridium, which like F. prausnitzii and B. pseudocatenulatum was found to be higher in non-gout patients (See 3 at Bottom). So, going for a Far Infrared Sauna with some regularity *may* also help the body better process and excrete Purines and Uric Acid. I’ve been doing it for several months now to improve recovery after strength training. Worst case it feels amazing!

  1. Dietary Factors and Modulation of Bacteria Strains of Akkermansia muciniphila and Faecalibacterium prausnitzii: A Systematic Review
  2. Bifidobacteria and Butyrate-Producing Colon Bacteria: Importance and Strategies for Their Stimulation in the Human Gut
  3. Far infrared radiation induces changes in gut microbiota and activates GPCRs in mice

Making progress? Data to Track in Curing Gout

If you buy in to my hypothesis that metabolic syndrome is the real issue driving gout then it becomes pretty straight forward for most people to track progress. There are a million things you could track but at first don’t miss the forest for the trees. These are a short list of things that, if improved, will likely result in improvements to ton of other markers.

Body Composition

The amount of visceral fat you carry around isn’t readily apparent but the presence of it is a telltale indicator of metabolic syndrome. For some people you can get a rough idea by measuring waist to height ratio. Ideally you don’t want the ratio to be over .5 (waist in cm divided by height in cm). BMI is not reliable.

A much better option is DEXA (or DXA) Body Composition Scan. Look for a company setup to use the DEXA to report on body fat, visceral fat, bone density, and lean body mass. Of most interest is the amount of visceral fat. This is the fat that’s highly correlated to many different chronic diseases including heart disease. Each scan should cost $100 to $200.

Get a scan soon to establish a baseline. Then do a follow-up every six months at least. I get them quarterly. When you go for your scan be consistent about time of day and if you have or have not consumed water. We want to know trends and water can be read as lean mass. Don’t over think it but just be consistent for each scan.

Do a Google search for DEXA or DXA. Expect to pay out of pocket. If you are in the Washington DC area I like Composition ID (no relationship to them at all).

The goals for your body composition over time is reduction of visceral fat below 1 lb, but it can and should be lower for optimal health. You should also see stable or increasing bone density, and stable or increasing lean mass.

Blood Markers

Again there are a million things you can track and you could spend a small fortune doing so. I believe for most people that’s a waste. Track a few key items, get those to improve and the others will likely fall into line, or you can make smaller adjustments later. Note that the goal numbers I propose are what I have gathered to be ideal. They are lower/tighter than the normal range provided labs (which skew towards doing lab work for people who are sick, not optimally healthy).

As with a DEXA scan, expect to pay out of pocket, but these tests are cheap. You can buy from Quest or LabCorp but I love OwnYourLabs.com (again no relationship with them but what Dave Feldman and Siobhan Huggins do is amazing stuff). Plan to test quarterly or how ever often you feel you need to track your progress.