Associations Among Daily Fish Intake, Monocyte/HDL-C Ratio, and Lifestyle in Japanese Males Aged >50: Risk Stratification of Atherosclerotic Cardiovascular Disease
Abstract Background: The monocyte/high-density lipoprotein cholesterol (HDL-C) ratio (MHR) may be a novel inflammatory marker of the developing atherosclerotic cardiovascular disease (ASCVD). We investigated the relationship between the average number of days of fish intake per week and the MHR and lifestyle behaviors and to explore the validity of stratifying the risk of ASCVD using the combination of MHR and the serum HDL-C level.Methods: This cross-sectional study was conducted in a population of 2485 males aged over 50 years at the Health Planning Center of Nihon University Hospital between April 2018 and March 2019.Results: The average frequency of fish intake was 2.32 ± 1.31 per week. Multiple stepwise regression analysis identified increased weekly fish frequency intake as an independent determinant of a decreased MHR (β = -0.072, p < 0.0001). Healthier lifestyle behaviors were also significantly associated with decreased MHR. As the fish intake frequency increased, the proportion of subjects with the cigarette smoking habit decreased (p = 0.014), that of subjects with aerobic exercise habit increased (p < 0.0001), and that of subjects with alcohol drinking habit increased (p < 0.0001). A risk stratification or ASCVD by combining the HDL-C level and fish intake frequency with the MHR could be developed, indicating that even with similar HDL-C levels, higher HMR and fish frequency are associated with higher risk ASCVD. Conclusion: A high fish intake frequency may be associated with healthier lifestyle behaviors as well as a lower MHR, and may thus represent a component of a healthy lifestyle associated with a lower risk of ASCVD in Japanese males aged over 50 years. These associations may be related to being the preventive effect of fish intake on ASCVD.Clinical Trial Registration: UMIN (http://www.umin.ac.jp/) Study ID: UMIN 000041368 registered 10/08/2020