Relationship between dietary caffeine intake and blood pressure in adults

Abstract

The aim of this study was to determine the consumption frequency of caffeinated foods and beverages and daily caffeine consumption amounts, and examine relation between caffeine and blood pressure (BP). A cross sectional door-to-door interview was conducted with 1329 volunteers between the ages of 20 and 60 (mean ages 29.9 ± 10.8 years) and based in Ankara/Turkey. The rate of individuals whose BPs were above 140/90 mmHg was 13.5%. The median caffeine consumption was 150.0 ± 122.06 mg. Although no significant correlation was found between total caffeine intake and diastolic blood pressure (DBP) of individuals, a positive correlation was observed between daily total caffeine and systolic blood pressure (SBP) (p < .05). Also, when analyzed factors that could be associated with DBP and SBP, BMI had effect in the model formed for both types of BP (p < .05). While smoking status associated with SBP (p = .002), gender and waist circumference related to DBP (p < .05) As a result relationship between caffeine intake and BP was affected other factors.

Keywords:

• Diastolic blood pressure
• systolic blood pressure
• daily caffeine intake
• caffeinated foods
• caffeinated beverages

Acknowledgments

The authors would like to thank Dietitian Fatih Kisioglu and Dietitian Meryem İtek for technical help in data collection and for their collaborated efforts in conducting the survey.

Disclosure statement

The authors declare they have no conflict of interest. The authors alone are responsible for the content and writing of this article.