Gout and Weight: How Excess Weight Raises Your Risk

Gout is a form of inflammatory arthritis caused by the deposition of urate crystals in joints. It affects around 2.5% of the UK adult population and is characterised by sudden, severe episodes of joint pain — most commonly in the big toe, ankle, or knee. Gout is strongly associated with excess weight, and weight management is one of the most effective strategies for reducing the frequency and severity of attacks.

Why does excess weight increase gout risk?

Uric acid is produced when the body breaks down purines — compounds found in certain foods and produced naturally during cell turnover. Normally, uric acid dissolves in the blood and is excreted by the kidneys. When uric acid levels become too high (hyperuricaemia), crystals form and deposit in joints, triggering the intense inflammation of a gout attack.

Excess weight raises uric acid levels through several mechanisms. Adipose tissue increases purine turnover, raising uric acid production. Insulin resistance — closely associated with obesity — reduces the kidneys' ability to excrete uric acid. Fructose, consumed in excess in many Western diets, also stimulates uric acid synthesis.

A large UK study using data from the Clinical Practice Research Datalink found that obesity was associated with a fourfold increase in gout risk compared to a healthy weight.

Does weight loss reduce gout attacks?

Yes. Studies consistently show that weight loss lowers serum uric acid levels and reduces the frequency of gout flares. A 2017 study in the Annals of the Rheumatic Diseases found that weight loss of 7.7kg over 16 months reduced serum uric acid by 0.6 mg/dL and significantly reduced the number of gout attacks per year.

The rate of weight loss matters. Rapid weight loss — particularly through very low calorie diets — can temporarily raise uric acid levels and trigger gout attacks as fat cells break down and release purines. A gradual, medically supervised approach avoids this risk.

What dietary changes help?

• Reduce high-purine foods — red meat, organ meats, shellfish, and oily fish in large quantities
• Limit alcohol — particularly beer and spirits, which raise uric acid levels
• Avoid sugary drinks — fructose-sweetened beverages are strongly associated with gout risk
• Stay well hydrated — adequate fluid intake supports uric acid excretion
• Include low-fat dairy — associated with lower uric acid levels in observational studies

If you have gout and are looking to manage your weight safely, book a consultation with Weight Loss Wales for a doctor-led programme.