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.
If you consume a lot of caffeine, your body adapts and your tolerance level becomes quite high-so you end up needing more and more caffeine to have the desired effect. Thus begins a cycle. There are quite a few few harmful effects of caffeine that are worth taking note of. There are studies that show a moderate intake of caffeine to have a few health benefits, but these studies are not conclusive yet. The ideal is to have no more than 1 cup of tea or coffee a day or no more than 2 cups of green tea a day.