Obesity induces alterations in lipid biochemistry, evolving toward dyslipidaemia atherogenesis, a critical factor in the development of cardiovascular events. Two relevant forms of lipid abnormalities are atherogenic dyslipidaemia (AD) and lipid triad (LT), which involve alterations in triglyceride levels, HDL-c, and LDL-c. The aim of this study was to assess the linkage of atherogenic AD and LT with different scales of overweight and obesity. We carried out a cross-sectional study including 418,343 Spanish adult workers, recruited from workplace health assessments. Atherogenic dyslipidaemia was defined as triglyceride levels150mg/dL, HDL values<40mg/dL in men and 160mg/dL, LT was considered. Subjects affected by AD and LT in the study exhibited significantly higher mean values than those without AD and LT in all overweight, obesity, and body fat related scales studied. VAI (visceral adiposity index) was the strongest predictor of AD (AUC=0.934, 95 CI: 0.933 to 0.936) and LT (AUC=0.926, 95 CI: 0.923 to 0.928). Atherogenic dyslipidaemia and LT positively correlate with different scales of overweight and obesity. Further studies should aim to identify other contributory factors. Our obtained data might be useful in laying the groundwork for future works on AD and LT.

Insulin resistance (IR) has been identified as a key factor in the appearance of non-alcoholic fatty liver disease (NAFLD) as it is related through a complex molecular biochemical and immunological mechanism. Our aim was to evaluate the relationship between different scales that estimate the risk of IR and scales that determine the risk of NAFLD. This descriptive and cross-sectional study was performed in 219,477 Spanish workers from different sectors and Spanish regions. The prevalence of high values of all the IR scales increases as the values of the NAFLD and liver fibrosis scales increase. In the multivariate analysis, the risk of presenting high values in the IR scales increases greatly as the values of the NAFLD and hepatic fibrosis scales increase, with particularly high OR values when using the Metabolic Score for Insulin Resistance (METS-IR) scale (LAP high OR 42.20 (95% CI (39.10–45.56) and FLI high OR 32.35 (95% CI 31.10–33.61)). We can conclude that there is a direct relationship between the values of the IR scales and the NAFLD and liver fibrosis scales in our population.