Long-term (5-year) effects of a dietary intervention for reducing the risk factors of metabolic syndrome among Japanese male workers

Abstract

Objective : The aim of this study was to assess the effectiveness of long-term (5-year) intervention of dietary education to reduce the risk factors of MetS among Japanese male workers.
Methods : We followed subjects for 5 years after providing yearly dietary intervention sessions at the time of medical check-ups. The subjects were 41 males [42.4±13.3 yr, 23-56 yr], received a health check-up. They were placed in the Dietary Intervention group (DI, n=20) or non-DI group (non-DI, n=21).
Results : At baseline, the characteristics of the DI and non-DI group did not significantly differ. The body weight decreased over the 5-yr in the DI group, while it increased in the non-DI group (p<0.10). In the non-DI group, the LDL-C level in the 5^th yr was significantly higher than that at baseline (p<0.001), while it was maintained in the DI group. The TG level decreased significantly in DI group (p<0.01). The energy intake of the DI group decreased by 10% over the 5 yr study.
Conclusion : It is indicated that continuous dietary education over 5 years would be effective for improving the risk factors of MetS.