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Int J Food Sci Nutr. 2017 Mar;68(2):227-233. doi: 10.1080/09637486.2016.1226276. Epub 2016 Sep 2.

Relationship between dietary caffeine intake and blood pressure in adults.

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a Department of Nutrition and Dietetics, Faculty of Health Sciences , Gazi University , Ankara , Turkey.
b Department of Nutrition and Dietetics, Faculty of Health Sciences , Ankara University , Ankara , Turkey.


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.


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

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