Recent News: The Deep. Natalie Farrow was recently cast on Freeform's new pilot The Deep. They are waiting to see if it get's picked up, Catch Natalie Farrow's interview, talking all things iZombie and what it was like to play Ginger.
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.
Caffeine found in tea, coffee, and other foods and drinks, is a drug, an alkaloid, related to some of the most violent of poisons. When it enters the human body, it produces at first a feeling of stimulation, followed in due course by a period of depression, relief from which is sought by the use of more caffeine.