A placebo-controlled, randomised, double-blind, parallel-group comparative study was conducted to investigate the effect of continuous intake of salmon milt (SM) DNA for 12 weeks on the improvement of liver function in 50 healthy Japanese participants aged 30 to 70 years with alanine aminotransferase (ALT) levels of 25-87 U L in men, 22-66 U L in women, of BMI 22.1-29.4 kg m. Comparative analysis of hepatic functions and several other parameters, including anthropometric parameters in placebo and SM DNA administered groups, revealed no significant differences in serum ALT level. SM DNA significantly improved the liver-to-spleen (L/S) ratio, body weight, and BMI in the main group. In addition to these parameters, in the BMI < 25 kg m subgroup, the leptin level was significantly reduced. No adverse reactions or abnormal changes, symptoms, or findings in the clinical examination after intake of the test food containing SM DNA were observed. Furthermore, no significant difference in uric acid levels between SM DNA and placebo groups indicated the safety of using SM DNA as a food supplement. These results demonstrated the potential fatty liver improvement and anti-obesity action of continuous intake of SM DNA for 12 weeks without any significant adverse effects.
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