Uric Acid
| Clinical | Optimal | |
|---|---|---|
| Male | 200 - 430 umol/L | 200-430 umol/L (optimal below 360 umol/L) |
| Female | 140 - 360 umol/L | 140-360 umol/L (optimal below 300 umol/L) |
What is Uric Acid?
Uric acid is the end product of purine metabolism in humans. Purines are natural substances found in every cell of your body and in many foods, particularly organ meats, red meat, shellfish, and certain vegetables. When purines are broken down, the final product is uric acid, which is dissolved in the blood, filtered by the kidneys, and excreted in urine.
Unlike most other mammals, humans lack the enzyme uricase that breaks down uric acid further, meaning we have naturally higher circulating levels. This evolutionary quirk has both advantages and disadvantages: uric acid acts as a powerful antioxidant in the blood, but when levels become too high, it can crystallise in joints (causing gout) or in the kidneys (causing kidney stones).
Uric acid is gaining increasing attention as a metabolic marker beyond its traditional association with gout. Research now links elevated uric acid to cardiovascular disease, hypertension, kidney disease, metabolic syndrome, and type 2 diabetes, making it a valuable addition to comprehensive health assessments.
Why Uric Acid Matters for Your Health
Elevated uric acid, known as hyperuricaemia, affects a significant proportion of adults in the UK and is strongly associated with the Western diet and lifestyle. Beyond the well-known risk of gout (which affects approximately 2-3% of UK adults), high uric acid is now recognised as an independent risk factor for cardiovascular disease, hypertension, and chronic kidney disease.
From a longevity perspective, uric acid sits at the intersection of metabolic health, inflammation, and cardiovascular risk. It rises with insulin resistance, fructose consumption, and alcohol intake, all of which are key targets for health optimisation. Maintaining optimal uric acid levels is increasingly viewed as part of a comprehensive strategy for healthy ageing.
Interestingly, uric acid also has antioxidant properties, accounting for approximately half of the antioxidant capacity of human blood. This means that both very high and potentially very low levels may be suboptimal, with the healthiest range being somewhere in the middle of the reference range.
Uric Acid& Your Wearable Data
Uric acid is the end product of purine metabolism and, at elevated levels, can cause gout and kidney stones while also serving as an independent cardiovascular risk marker. Exercise has a complex relationship with uric acid: moderate regular activity tracked by your wearable is associated with lower levels, but intense anaerobic exercise can transiently spike uric acid due to increased purine turnover.
Wearable hydration indicators are relevant for uric acid management. Dehydration concentrates uric acid and reduces renal clearance, increasing crystallisation risk. If your wearable data shows high-intensity exercise days or elevated nocturnal heart rate suggesting dehydration, maintaining extra fluid intake is important for keeping uric acid in check.
Body composition influences uric acid significantly. Wearable-tracked activity patterns that support lean body mass and healthy weight are associated with lower uric acid levels. Regular aerobic exercise visible in your heart rate zone data, combined with healthy step counts, supports the metabolic processes that keep uric acid within normal range.
What High Uric Acid May Suggest
Elevated uric acid results from either overproduction or reduced excretion of uric acid by the kidneys. Dietary factors play a major role: high intake of purine-rich foods (red meat, organ meats, shellfish), fructose (particularly from sugary drinks), and alcohol (especially beer) all raise uric acid levels significantly.
When uric acid exceeds its solubility threshold, it can crystallise. Crystals deposited in joints cause gout, an intensely painful inflammatory arthritis that most commonly affects the big toe. Crystals in the urinary tract can form kidney stones. Chronically elevated uric acid may also directly damage blood vessels and kidney tissue.
Other factors that raise uric acid include obesity, insulin resistance, kidney impairment, certain medications (particularly diuretics), and conditions causing rapid cell turnover such as psoriasis or blood cancers. If your results suggest elevated uric acid, dietary modification is the most impactful and immediate intervention.
What Low Uric Acid May Suggest
Low uric acid (below 150 umol/L) is uncommon but can be seen in conditions such as Wilson's disease, Fanconi syndrome, or with certain medications. Very low uric acid may also occur with low purine diets or in individuals who excrete uric acid very efficiently.
Some research suggests that very low uric acid may reduce antioxidant protection, as uric acid contributes significantly to blood antioxidant capacity. However, this is not a well-established clinical concern for most people.
If your results suggest very low uric acid alongside other unexplained symptoms, further investigation may be warranted, but for most individuals, a lower-than-average level is not concerning.
How to Optimise Your Uric Acid
Food
Reduce purine-rich foods including organ meats, red meat, game, shellfish, and anchovies, which directly increase uric acid production, Eliminate or dramatically reduce sugary drinks and foods high in fructose, as fructose metabolism directly produces uric acid, Increase cherry intake, as cherries and cherry juice have evidence for reducing uric acid levels and gout flare frequency, Drink plenty of water (at least 2 litres daily), as good hydration helps the kidneys excrete uric acid more efficiently, Increase intake of low-fat dairy products, which have been associated with lower uric acid levels
Lifestyle
Limit alcohol consumption, particularly beer and spirits, which both raise uric acid through different mechanisms, Lose excess weight gradually, as obesity is strongly linked to elevated uric acid, but avoid crash diets which can paradoxically spike levels, Exercise regularly at moderate intensity, which improves insulin sensitivity and supports healthy uric acid metabolism, Stay well hydrated, especially during exercise and warm weather, to support renal uric acid excretion
Supplements
Tart cherry extract (500-1000mg daily) has evidence for modestly reducing uric acid levels and gout flare frequency, Vitamin C (500-1000mg daily) has been shown in studies to modestly lower uric acid by promoting kidney excretion, Quercetin (500mg daily) is a flavonoid with xanthine oxidase inhibiting properties that may support healthy uric acid levels
When to Speak to Your GP
See your GP if your uric acid results suggest levels above 420 umol/L for men or above 360 umol/L for women, particularly if you have experienced joint pain or swelling suggestive of gout. Seek prompt medical advice if you experience a sudden, intensely painful swollen joint, as this may indicate an acute gout attack. Also consult your GP if elevated uric acid is found alongside impaired kidney function or recurrent kidney stones.
References
- NHS. Gout — Overview. Updated 2024. nhs.uk
- NICE. Gout: diagnosis and management. Clinical Knowledge Summaries. nice.org.uk
- BMJ. Dalbeth N, et al. Gout. Lancet. 2021;397(10287):1843-1855. pubmed.ncbi.nlm.nih.gov
- EULAR. Richette P, et al. 2016 updated EULAR evidence-based recommendations for the management of gout. Ann Rheum Dis. 2017;76(1):29-42. pubmed.ncbi.nlm.nih.gov
Medical Disclaimer— This content is for general educational and informational purposes only. It does not constitute medical advice, diagnosis, or treatment. Omniwo Ltd is a wellness information service and is not a medical device, clinical laboratory, or regulated healthcare provider under MHRA guidelines. The “optimal ranges” presented on this page are based on published clinical guidelines (WHO, NICE, NHS) and peer-reviewed research; they represent functional wellness targets and may differ from standard laboratory reference ranges. Individual results should always be interpreted by a qualified healthcare professional (such as your GP) who understands your full medical history. Do not start, stop, or change any medication or supplement based solely on this information. If you are experiencing symptoms, seek medical attention promptly.