New Research Links Processed Meat to Higher Gout Risk, Even After Accounting for Lifestyle

People who eat more processed meat may face a meaningfully higher risk of developing gout, according to a large study published in Journal of Advanced Research that followed nearly 400,000 adults for more than 15 years.

Gout is a common form of inflammatory arthritis. It develops when uric acid builds up in the blood and forms sharp crystals in the joints, causing sudden, intense pain, swelling and redness, most often in the big toe. Rates of gout have been climbing alongside changes in modern diets, and researchers have long suspected that food choices play a role. Until now, though, it has been unclear whether processed meat itself, separate from other lifestyle and health factors, raises gout risk.

To find out, investigators analyzed data from 395,356 adults enrolled in the UK Biobank who did not have gout at the start of the study. Over an average follow-up of 15.7 years, the team tracked participants' processed meat intake, such as bacon, sausage, ham, hot dogs and deli meats, and recorded who went on to develop gout. The analysis accounted for income, education and broader lifestyle habits, so the team could isolate the effect of processed meat itself. A subgroup of participants also had their blood analyzed for proteins connected to both processed meat intake and gout.

Investigators grouped processed meat intake into three levels based on how often participants ate it: low (never or less than once a week), middle (two to four times a week) and high (five or more times a week, including daily). They also built a healthy lifestyle score based on five factors: smoking, alcohol use, physical activity, diet and sleep. Each factor was scored as healthy or unhealthy using established criteria (for example, at least 150 minutes of moderate activity per week counted as healthy physical activity, and meeting at least four of five sleep-quality measures counted as healthy sleep). The scores were added up and used to sort participants into healthy, middle or unhealthy lifestyle groups.

Socioeconomic status was measured using education level, household income and employment status, then combined into a single composite measure using a statistical technique called latent class analysis, which sorted participants into high, intermediate or low socioeconomic groups. The study also adjusted for other factors that could influence gout risk, including age, sex, ethnicity, country of birth, body mass index, red meat intake, blood urate levels, diuretic medication use, kidney function (estimated glomerular filtration rate) and history of conditions such as hypertension, diabetes, cardiovascular disease or cancer.

What the investigators found

During the study, 8,215 participants developed gout.

People with moderate processed meat intake had about a 12% higher risk of gout compared with those who ate the least. People with high intake had about a 19% higher risk. When investigators used a model that accounted for changes in diet over time, the risk estimates climbed higher still, up to 84% for people with the highest intake.

Lower socioeconomic status and less healthy lifestyle habits overall were also linked to higher gout risk, underscoring that diet is one piece of a larger picture.

In blood samples, researchers identified 40 proteins connected to both processed meat intake and gout. These proteins point to biological processes involving metabolism, inflammation, and hormone and nerve signaling. The findings offer early clues about how diet might contribute to gout at a biological level, though the researchers described this part of the study as exploratory.

What it means for patients

The findings add to growing evidence that diet matters for joint health, not just for heart health or weight management. The study cannot prove that processed meat directly causes gout, since it is observational rather than experimental. But the association held up even after investigators accounted for income, lifestyle and other factors, suggesting that cutting back on processed meat may be a meaningful and modifiable way to help lower gout risk.

“These findings extend beyond traditional purine-centered dietary paradigms and indicate that processed meat constitutes a distinct dietary exposure characterized by pronounced social patterning and an independent association with gout risk,” noted investigators. “Addressing this exposure may therefore represent a pragmatic and equity-oriented strategy for gout prevention in contemporary populations.”