Dietary fructose intake may increase serum uric acid concentrations, researchers said.
Both uric acid concentration and fructose consumption may be increased in individuals with non-alcoholic fatty liver disease (NAFLD).
Researchers found that both dietary fructose consumption and serum uric acid concentrations are independently associated with non-alcoholic steatohepatitis (NASH).
NAFLD, the accumulation of extra fat in liver cells in people who drink little or no alcohol, is recognised as the fastest growing cause of liver disease in both Western and developing countries.
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Although NASH is a less aggressive form of NAFLD, it can progress to severe fibrosis and cirrhosis, with development of hepatocellular carcinoma in adults.
"It is plausible that dietary fructose intake and uric acid concentrations are potential risk factors for liver disease progression in NAFLD," said Valerio Nobili, from Bambino Gesu Hospital in Italy
Researchers in Italy and the UK studied 271 obese children and adolescents with NAFLD (155 males, mean age 12.5 years) who underwent liver biopsy.
All patients completed a food frequency questionnaire, indicating when specific foods were consumed (breakfast, morning snack, lunch, afternoon snack, dinner etc), how often (every day of the week, sometimes or never) and portion size.
Nearly 90 per cent reported drinking sodas and soft drinks one or more times a week.
Almost 95 per cent of patients regularly consumed morning and afternoon snacks consisting of crackers, pizza and salty food, biscuits, yogurt or other snacks.
In the group of patients studied, 37.6 per cent of patients had NASH and 47 per cent of patients with NASH had high uric acid compared with 29.7 per cent of patients who did not have NASH.
Fructose consumption was independently associated with high uric acid, which occurred more frequently in patients with NASH than in not-NASH patients.