Spontaneous metabolic syndrome (TSOD) mice are known to develop obesity at 3 months of age, hyperlipidemia and diabetes at 4 months of age, and fatty hepatitis at 6 months of age. In this study, DNB analysis was conducted on gene expression information in adipose tissue of TSOD mice. The results revealed that we were able to detect pre-disease at the age of 5 weeks. Moreover, the gene cluster selected by DNB analysis in the 5-week age group consisted of 147 genes. The 147 unaffected genes could be systematized into genes related to spermatogenesis, cell differentiation, organogenesis, proteolysis, gametogenesis, neuropeptides, and interferon-alpha.