Associations Between Caffeinated Beverage Consumption and Blood Pressure Parameters in Nurses Based on 24-Hour Ambulatory Blood Pressure Monitoring: A Cross-Sectional Study.

Background and Aims: Nurses frequently consume caffeinated beverages to manage fatigue, but their associations with ambulatory blood pressure are unclear. This cross-sectional study examined associations between caffeinated coffee, tea, and energy drinks and blood pressure parameters in nurses. Methods: A total of 335 nurses from a tertiary hospital completed questionnaires on beverage consumption (past month and during 24-h monitoring) and underwent 24-h ambulatory blood pressure monitoring. Blood pressure levels (24-h, awake, asleep) and short-term blood pressure variability were measured. Generalized linear regression was employed to analyze associations between beverage consumption and blood pressure, with Benjamini-Hochberg FDR correction ( Results: Before correction, several coffee/tea patterns and energy drinks were associated with blood pressure levels or blood pressure variability ( Conclusion: Specific high-volume coffee patterns (medium- and high-frequency) were associated with increased short-term systolic BPV, while high-frequency low-volume coffee was associated with higher asleep systolic blood pressure. Other exploratory findings did not survive FDR correction. These results are exploratory and require prospective validation.