Abstract
OBJECTIVES: The American Heart Association recently released an updated algorithm for evaluating cardiovascular health (CVH)-Life's Essential 8 (LE8) score. Our objective was to investigate the correlation between levels of CVH, as determined by the LE8 score, and the risk of kidney stones among a representative sample of adults in the United States. METHODS: We included data from the National Health and Nutrition Examination Survey (NHANES) covering the years 2007-2016 for further analysis. The LE8 score, a comprehensive measurement ranging from 0 to 100, was used to evaluate overall CVH and classified into three categories: low (0-49), moderate (50-79), and high (80-100) CVH. Logistic regression was employed to assess the association between the LE8 score and kidney stones. Furthermore, sensitivity analysis was conducted to validate the findings, and the presence of a non-linear relationship was examined using restricted cubic spline (RCS) regression methods. RESULTS: A total of 19,988 participants were included in this study (weighted mean age, 47.99 years; 95 % confidence interval [CI]: 47.46-48.53 years), with 10,319 being female (weighted percentage, 51.98 %; 95 % CI: 51.26-52.71 %) and 1923 identified as having kidney stones (weighted percentage, 9.95 %; 95 % CI: 9.41-10.53 %). In the fully-adjusted multivariable model, higher LE8 scores were associated with prevalence of self-reported kidney stones (odds ratio [OR] for a 10-unit increase in score, 0.86; 95 % CI: 0.82-0.91), presenting a linear dose-response relationship. Compared to the low CVH group, participants in the moderate and high CVH groups exhibited a lower prevalence of kidney stones (OR = 0.80; 95 % CI: 0.69-0.92; OR = 0.54; 95 % CI: 0.43-0.69, respectively). Similar trends were observed when assessing the association between health behavior scores and kidney stones. Moreover, the negative correlation between the LE8 score and the prevalence of kidney stones was markedly more pronounced in various stratified analyses. CONCLUSION: Our study suggests that a higher level of CVH, as assessed by the LE8 metrics, is independently associated with a lower prevalence of self-reported kidney stones in a linear relationship. Further research, particularly through longitudinal or intervention studies, is required to establish whether actively promoting optimal CVH levels can effectively reduce the incidence of kidney stones.