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.
Dietary sources include coffee, tea, cola drinks, and chocolate, as well as energy drinks. The most notable behavioral effects of caffeine occur after consumption of low-to-moderate doses (50-300 mg) and include increased alertness, energy, and ability to concentrate.