Key result
Regular tea and coffee consumption were associated with significantly higher bilateral brachial and aortic blood pressures compared to non-drinkers in young healthy individuals.
Why the study?
Caffeine present in tea and coffee has been implicated to have long term effects on the cardiovascular system, but its acute and chronic effects on vascular parameters in young, healthy individuals required documentation.
Does tea and coffee consumption affect blood pressure, pulse wave velocity, and aortic pressures in young healthy individuals?
Observational (n=86)
Does tea and coffee consumption affect blood pressure, pulse wave velocity, and aortic pressures in young healthy individuals?
Regular consumption of tea and coffee is associated with higher peripheral and central blood pressures in young healthy individuals, with coffee also showing acute stimulatory cardiovascular effects.
Association in young adults should not change practice; leaves open whether tea or coffee causally elevates BP.
Caffeine present in tea and coffee, the most commonly used beverages, has been implicated to have long term effects on cardiovascular system. The aim of this study was to document the acute and chronic effects of tea and coffee consumption on blood pressure, pulse wave velocity and aortic pressures in young, healthy individuals. This observational study was conducted on 86 healthy MBBS student volunteers of both genders between the age group of 18-27 years. Cardiovascular parameters (heart rate, peripheral blood pressure, central blood pressure, pulse wave velocity, augmentation pressure) were measured using PeriScope. Participants were divided into 3 groups based on their history of consuming tea/coffee/both/none. Data collected was analyzed using SPSS 17.0. ANOVA or Welsh test of equality of means was used for knowing the differences for scale variables. Paired sample t test was used to know the acute effect of coffee consumption among group 1 participants in a before-after design. In regular tea consumers, the bilateral brachial SBP, DBP and MAP were significantly higher than individuals who did not consume tea regularly; similar results in these parameters were also observed in regular coffee drinkers. However the lower limb arterial parameters were not markedly differently in tea/coffee group compared to non-drinkers. In both tea and coffee group, AoSP and AoDP were significantly higher than non-drinkers. Additionally, coffee drinking has acute stimulatory effects on CVS as evident by increase in peripheral and central vascular parameters.
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Farah et al. (2020) conducted an observational in Healthy (n=86). Tea and coffee consumption vs. Non-drinkers was evaluated on Cardiovascular parameters including blood pressure, pulse wave velocity, and aortic pressures. Regular tea and coffee consumption were associated with significantly higher bilateral brachial and aortic blood pressures compared to non-drinkers in young healthy individuals.
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