On August 29, 2026, ScienceDaily reported a clinical trial comparing a ketogenic diet against Mediterranean and low-fat diets in people with obesity, prediabetes, and fatty liver disease. All three groups lost roughly 10% of their body weight, but the keto group saw something the others did not: liver fat fell by 67%. News like this reaches people with gout for two reasons. The liver is central to purine metabolism and urate production, and fatty liver and high uric acid often coexist. Yet keto is a diet built on fat and animal protein — complicated territory for anyone managing flares. Here is what the study found, what it did not test, and how to approach low-carb eating when you have gout.
What the keto trial found — and what it did not measure
The study, as described in the ScienceDaily report, enrolled people with obesity, prediabetes, and fatty liver disease, then assigned them to a ketogenic diet, a Mediterranean diet, or a low-fat diet. All three groups achieved about a 10% reduction in body weight, which is a meaningful result in its own right. The headline finding was that the keto group cut liver fat by 67%, outperforming the comparison diets on several measures of metabolic health. For the population studied — people carrying excess weight with disrupted blood-sugar control and fat buildup in the liver — that is a notable outcome.
Now the caution that matters for this article's readers: the trial studied metabolic health markers. It did not report serum urate outcomes, and it did not report gout flares. Nothing in the coverage suggests uric acid was tracked. So the honest reading is that keto performed well for liver fat and weight in this trial, and we simply do not know from this study what it does to gout. Anyone who tells you this trial proves keto helps or hurts gout is going beyond the data. If you are weighing a diet change, the urate picture has to come from other lines of evidence, and you should discuss the decision with your doctor — especially if you take urate-lowering medication, since significant dietary shifts can interact with your management plan.
Why the liver matters when you have gout
The liver is one of the key organs in purine metabolism. Purines arrive from food and from the body's own cell turnover, and the liver is where much of the conversion toward uric acid happens. That is why the trial's liver-fat result draws attention from the gout community: an organ that handles urate production is also an organ that keto measurably de-fattened in this study. There is also a well-documented co-occurrence in clinic — fatty liver and elevated uric acid are associated with each other, and both travel with insulin resistance and obesity. This is an association, not proof that one causes the other, and the trial did not test whether reducing liver fat lowers urate.
Weight loss itself is the clearest thread here. Losing excess weight is associated with lower serum urate and fewer flares over time, which is why weight management sits at the center of most gout lifestyle advice. All three diets in the trial produced roughly 10% weight loss, so the weight-related benefit was not unique to keto. If the appeal of the keto result is "my metabolism might improve," that appeal applies to any eating pattern you can sustain that produces the same loss. Our weight and gout guide covers that relationship in detail.
Two versions of keto: one friendly, one a minefield
"Keto" is not one menu. It is a macronutrient target — very low carbohydrate, high fat, adequate protein — and people fill that target very differently. The version most often photographed is heavy on fatty red meat, bacon, butter, and cheese. That version is where gout risk concentrates. Red meat is a recognized risk factor in gout research, and the purine numbers back up the concern for ground beef specifically: in measured data, cooked 73% lean ground beef comes in at 233.3 mg purines per 100 g, and 93% lean ground beef at 251.9 mg/100 g — both rated Avoid. A keto day built around double cheeseburgers piles those numbers up fast. Bacon has no reliable measured purine value in the database, which is its own kind of warning; processed meats in general are treated cautiously for gout. Our ground beef purine ranking and meat and gout guide break down how cuts and processing change the picture.
The other version of keto looks different: fish, eggs, low-carbohydrate vegetables, olive oil, and limited cheese. Eggs measure 0.0 mg purines per 100 g — a genuinely zero-purine protein that fits keto's carb limits perfectly. Most hard cheeses measure extremely low, and American cheese measures 0.0 mg/100 g in measured data, which makes dairy the friendly corner of a low-carb plan; dairy is generally associated with neutral-to-lower urate in observational research, and our cheese purine ranking shows how wide that safe shelf is. Fatty fish brings omega-3s, though some seafood runs high in purines, so choices within the fish aisle still matter. One more note from the data: plant-based "ham-style" slices made from mycoprotein measure 117.5 mg/100 g (Moderate) — a reminder that meat substitutes are not automatically low-purine. The same macronutrient framework, filled with different foods, produces a completely different purine load.
Keto and uric acid: the evidence is mixed
What does the existing research say about ketogenic diets and urate? The honest summary is that the evidence is mixed. Early studies and clinical observations suggested that carbohydrate restriction can raise serum urate in the short term — a well-known effect during the first weeks of very low-carb eating, when ketone bodies compete with uric acid for excretion in the kidneys. Some people experience a gout flare in exactly that window. Longer-term studies have reported varying results, with some showing urate settling back down or even declining as weight loss proceeds. The direction and size of the effect appear to depend on the individual, the duration, and the composition of the diet.
That early-window risk is the practical takeaway. If you have gout and you restrict carbohydrates sharply, the transition period is when your kidneys are handling a shifted excretion load, and that is when flares have been reported. Rapid weight loss of any kind — not just keto — carries a similar reputation for triggering flares early on. Alcohol is a separate multiplier: several keto-friendly drinks are also drinks associated with higher urate, and beer in particular sits at the top of that list regardless of carbs. None of this means keto is forbidden for people with gout. It means the transition deserves planning, hydration, and a conversation with your doctor before you start, and that flare triggers deserve extra attention during the first weeks.
Building a gout-friendlier low-carb plate
If you and your doctor decide a low-carb approach suits you, the composition work is straightforward in principle. Put eggs and most cheeses at the center of the protein rotation — both measure at or near zero purines, and both fit keto's carbohydrate limits. Rotate in poultry and low-purine fish in sensible portions rather than defaulting to red meat at every meal. Build volume with low-carbohydrate vegetables — leafy greens, zucchini, peppers, broccoli — which contribute almost no purine load. Treat ground beef, bacon, and organ meats as occasional rather than daily items, and check them in the FoodCanEat database before they become habits. Skip the sugar-sweetened sauces and sodas even if they fit your carb budget; fructose carries its own association with urate.
A realistic day might look like eggs scrambled in olive oil with spinach and a slice of cheese for breakfast, a large salad with grilled chicken for lunch, and baked fish with roasted low-carb vegetables for dinner. That plate is ketogenic by structure and gentle on purines by composition. What it avoids is the double bacon cheeseburger pattern that gives keto its gout reputation. The FoodCanEat database can help you check each item before it becomes routine, and if a flare does arrive during a diet transition, reviewing your recent meals against common trigger lists is a practical first step.
Frequently asked questions
Is the keto diet bad for gout?
Not automatically — it depends on how the diet is built. Keto is a macronutrient framework, and the purine load is decided by the foods used to fill it. A version built on eggs (0.0 mg purines per 100 g), cheese (American cheese measures 0.0 mg/100 g), fish, olive oil, and low-carb vegetables can stay low in purines. A version built on red meat runs into measured trouble fast: cooked ground beef measures 233.3–251.9 mg purines per 100 g depending on lean percentage, and red meat is a recognized gout risk factor in dietary research. There is also the transition effect: the evidence on keto and uric acid is mixed, but short-term rises in serum urate during the first weeks of carbohydrate restriction have been reported, and that window has been associated with flares in some people. The 2026 trial that found keto cut liver fat by 67% did not measure urate or gout outcomes, so it cannot settle the question either way.
Can I do keto if I have fatty liver and gout?
Possibly, but make it a joint decision with your doctor before you start. The trial reported by ScienceDaily on 2026-08-29 studied people with obesity, prediabetes, and fatty liver disease, and the keto group reduced liver fat by 67% while losing about 10% of body weight — a strong metabolic result for that population. But the study did not test urate or gout outcomes, so it offers no direct evidence about flares. The mixed evidence on keto and uric acid means the first weeks of a very low-carb diet deserve extra care: some people see a temporary urate rise, and rapid weight loss of any kind has been associated with early flares. If you proceed, favor the gout-friendly food list — eggs, most cheeses, low-purine fish, low-carb vegetables — keep red meat and processed meats occasional, stay hydrated, and tell your doctor about the change so your urate monitoring and any medication plan can account for it.
Which keto protein sources are lowest in purines?
Eggs and most cheeses lead the list. Raw chicken egg measures 0.0 mg purines per 100 g, and American cheese measures 0.0 mg/100 g — both rated Safe in the database, and both naturally low in carbohydrate, which makes them ideal keto proteins for someone managing gout. Dairy in general has been associated with neutral or favorable urate patterns in observational research. Fish is the next consideration: fatty fish brings omega-3 fats, but purine content varies widely across seafood, so check specific items rather than assuming. Poultry fits in moderate portions. At the other end, ground beef measures 233.3 mg/100 g at 73% lean and 251.9 mg/100 g at 93% lean — both Avoid-rated — and plant-based mycoprotein slices are not automatically safe either at 117.5 mg/100 g (Moderate). Bacon lacks a reliable measured value, which argues for caution. Build the rotation around the zero-purine anchors and check everything else before it becomes a habit.
References: ScienceDaily, "A ketogenic diet outperformed Mediterranean and low-fat diets in several measures of metabolic health during a clinical trial involving people with obesity, prediabetes, and fatty liver disease... [keto] cut liver fat by 67%," reported 2026-08-29, https://www.sciencedaily.com/news/health_medicine/diet_and_weight_loss/; FoodCanEat purine database (USDA-based, accessed 2026-08-30).