Written by Alexa Heathorn, MS, CNS. A 42-day low-purine, energy-restricted, balanced diet significantly reduced serum uric acid levels, improved body composition, and enhanced markers of renal and metabolic health compared with nutrition education alone in men with gout.

Gout is an inflammatory condition characterized by the deposition of monosodium urate (MSU) crystals within the joints, resulting in recurrent inflammation, irreversible joint damage, and progressive renal dysfunction.¹ Hyperuricemia, or elevated uric acid levels in the blood, is the underlying pathological basis of gout and develops from disordered purine metabolism, impaired renal uric acid excretion, or both.¹ In addition to joint and kidney complications, hyperuricemia is associated with an increased risk of obesity, insulin resistance, cardiovascular disease, and other metabolic disorders.² The primary therapeutic goal of gout management is to lower serum uric acid (sUA) levels and is most commonly achieved through pharmacological therapies.¹ While these medications are effective at lowering sUA levels, long-term use may be associated with liver and kidney toxicity, as well as gastrointestinal adverse effects.¹ As a result, there is growing interest in safe, sustainable strategies, such as Medical Nutrition Therapy that can lower sUA levels while simultaneously improving the broader metabolic health and long-term quality of life of individuals with gout.

Evidence suggests that excessive consumption of high-purine foods is associated with elevated serum uric acid (sUA) levels and an increased frequency of acute gout flares.¹ Accordingly, a low-purine diet, which limits foods such as organ meats, seafood, red meat, and concentrated broths while emphasizing fruits, vegetables, whole grains, and low-fat dairy, has become a cornerstone of gout management.¹ Although this dietary approach can improve gout outcomes, long-term adherence remains challenging due to its restrictive nature and impact on dietary satisfaction and quality of life.¹ Other dietary patterns, including the Dietary Approaches to Stop Hypertension (DASH) diet, have also demonstrated uric acid-lowering potential, but their efficacy in patients with gout remains uncertain.¹

Beyond dietary purines alone, hyperuricemia is closely linked to obesity and other metabolic disorders, with sUA levels positively correlated with body mass index (BMI) and visceral fat accumulation.¹ Because uric acid metabolism is closely intertwined with systemic energy metabolism, weight loss has been shown to reduce sUA concentrations and decrease the recurrence of gout flares.¹ Together, these findings suggest that dietary strategies targeting both purine intake and overall energy balance may provide greater therapeutic benefit than purine restriction alone.¹

While current clinical guidelines recommend nutrition therapy as a fundamental component of gout management, achieving clinically meaningful reductions in sUA through dietary guidance alone remains challenging, and high-quality clinical trials evaluating structured dietary interventions are limited.¹ Therefore, the purpose of this randomized controlled trial was to evaluate the efficacy of a low-purine, energy-restricted, balanced diet on serum uric acid levels and metabolic risk factors in patients with gout.¹

This 42-day, single-center, parallel-group randomized controlled trial included 90 adult male patients with gout. All participants received standardized nutrition education focused on balanced eating patterns, adequate hydration, and limiting high-purine foods while emphasizing fruits, vegetables, and low-fat dairy. Participants were then randomly assigned to either the control group, which received nutrition education alone, or the intervention group, which received an individualized medical nutrition therapy program consisting of a low-purine, energy-restricted, balanced diet tailored to each participant’s BMI, physical activity level, and basal metabolic rate.¹ Participants in both groups completed an initial one-on-one consultation with a nutrition professional, followed by weekly remote follow-up sessions that reinforced nutrition education, monitored dietary adherence, and provided individualized feedback to improve compliance.¹

Following the 42-day intervention, the low-purine, energy-restricted, balanced diet significantly reduced serum uric acid (sUA) levels compared with nutrition education alone (−112.4 vs. −47.0 μmol/L; p = 0.007).¹ Additionally, 71.1% of participants in the intervention group achieved the target sUA concentration (<360 μmol/L), compared with 40.0% in the control group.¹ Compared with the control group, participants in the intervention group consumed significantly fewer daily calories (p < 0.001) and purines (−245 mg/day; p < 0.001).¹ The intervention group also demonstrated greater reductions in body weight (−1.63 kg; p < 0.001), BMI (−0.50 kg/m²; p < 0.001), total body fat (−2.39 kg; p < 0.001), and visceral fat area (−12.1 cm²; p < 0.001), while preserving lean body mass.¹ Compared with the control group, the intervention group also experienced greater improvements in triglycerides (p = 0.023), serum creatinine (p = 0.016), glomerular filtration rate (GFR; p = 0.038), and fractional excretion of uric acid (FEUA; p = 0.001).¹ No serious adverse events were reported.¹

Several limitations should be considered when interpreting these findings. First, the intervention lasted only 42 days, limiting the ability to evaluate long-term adherence, sustainability, and the effects of the diet on gout flare frequency.¹ Second, the study included only male participants, reducing the generalizability of the findings to women with gout.¹ Third, because of the nature of the dietary intervention, blinding was not feasible, introducing the potential for performance and reporting bias.¹ Finally, emergency medication use during the intervention was not systematically recorded, making it difficult to determine whether changes in medication use influenced the observed outcomes.¹

This randomized controlled trial demonstrated that a low-purine, energy-restricted, balanced diet significantly reduced serum uric acid levels while improving body composition and several metabolic risk factors in men with gout.¹ These findings suggest that combining purine restriction with energy balance may offer greater therapeutic benefit than dietary purine restriction alone. While larger, longer-term studies are needed to evaluate the durability of these effects and their impact on gout flare frequency, this study provides promising evidence that a structured nutrition intervention may serve as an effective therapy to conventional gout management.¹

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Posted August 4, 2026.

Alexa Heathorn, MS, CNS-c, is a clinical nutritionist specializing in metabolic health, hormonal balance, and gastrointestinal restoration through root-cause functional nutrition. She earned her master’s degree in Nutrition from Bastyr University and is currently a Certified Nutrition Specialist (CNS) candidate. Alexa also works as a research writer and functional health consultant, translating complex science into actionable strategies for practitioners and wellness companies. Learn more at www.bloomedwellness.com.

References:

1.  Zhao T, Li S, Wu R, Zhang L, Wen J, Xiao J, Li D. Efficacy of a Low-Purine, Energy-Restricted and Balanced Diet on Hyperuricemia and Metabolic Profiles in Gout Patients: A Randomized Controlled Trial. Nutrients. 2026; 18(13):2047. https://doi.org/10.3390/nu18132047
2. Prasad Sah OS, Qing YX. Associations Between Hyperuricemia and Chronic Kidney Disease: A Review. Nephrourol Mon. 2015;7(3):e27233. Published 2015 May 23. doi:10.5812/numonthly.7(3)2015.27233