Array ( [actionDate] => 2008-12-11 [displayText] => Passed/agreed to in Senate: Resolution agreed to in Senate without amendment and with a preamble by Unanimous Consent.(text as passed Senate: CR S10958) [externalActionCode] => 17000 [description] => Passed Senate )
If you increase the amount of fruits and vegetables in your diet, you will also lower your blood pressure. Coffee contains caffeine which is a stimulant and can cause your blood vessels to contract and increase your blood pressure. However, this amount is small, and may or may not be significant.
Caffeine can increase blood pressure; long term consumption at sufficiently high doses has been associated with chronic arterial stiffness. Blood pressure increases are mediated by adenosine receptor antagonism. Caffeine can cause vasoconstriction. It is unclear if caffeine causes increased heart rate as a side effect.