It's standard advice based on the notion that caffeine raises the blood pressure enough to interfere with an accurate measurement. Most doctors advise people to avoid coffee (and other sources of caffeine) before they have their blood pressures checked. Is coffee bad for high blood pressure? A fresh look The circulatory effects of coffee are more complex than they seem, and an interesting study can help you filter out fact from fiction. But many people are sensitive to even one cup of coffee, making them feel jittery or interfering with sleep. Some of coffee's negative press seems to depend on the widespread belief that anything that tastes so good must be bad for you.īut there is a serious side to the argument: Coffee stimulates the nervous system, increasing alertness. During much of that time, it has stimulated controversy - and in the age of Starbucks, the dispute has blossomed from a tempest in a coffee pot to grounds for serious debate. Coffee has been part of the human diet for about 1,000 years.
