How does caffeine affect blood pressure?
Caffeine can cause a short, but dramatic increase in your blood pressure, even if you don't have high blood pressure. It's unclear what causes this spike in blood pressure.
Do you drink just one cup of coffee or tea first thing in the morning, hoping the caffeine in it will jump-start your day? Do you follow it up with a caffeinated beverage or two and then drink several more cups of coffee throughout the day?
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