Caffeine can cause a brief but dramatic increase in blood pressure, even if you don't have high blood pressure. It's not clear what causes this increase in blood pressure. The blood pressure response to caffeine varies from person to person. The same is true with the effect of caffeine on blood pressure.
Research indicates that coffee can increase blood pressure up to three hours after consumption. However, if you drink it regularly, this effect decreases. The study helps explain why previous research produced such variable results. Coffee increases blood pressure in people who are not used to it, but not in those who drink it regularly; young people seem more sensitive to coffee.
And the hypertensive effects of coffee appear to depend on ingredients other than caffeine. Regular coffee drinkers get used to these ingredients, so their pressure does not increase more than one or two points, but people who are not used to coffee can expect a temporary increase in their pressure after drinking regular or decaffeinated coffee. Caffeine is a vasoconstrictor, meaning it decreases the size of blood vessels and may increase blood pressure. Caffeine exerts its effects by interacting with different receptors in the brain.
Experts believe that other compounds in coffee, such as antioxidants, have a protective effect on blood vessels. Since coffee contains many different compounds besides caffeine, other compounds may be responsible for its effects on blood pressure. The same review suggested that beneficial compounds in coffee, such as phenols, may have a protective effect. For people with high blood pressure, current research suggests that daily coffee consumption is unlikely to have a significant impact on blood pressure or on the overall risk of heart disease (.
This study examined the relationship between the frequency of coffee consumption and blood pressure during a two-year follow-up of a cohort of older people. After two years of follow-up, this number increased to 107 participants (52.2%), with an average age at diagnosis of 59.6 years (− 95% CI, 3D 57.45; 95% CI: %3D 61.77). Some research suggests that the amount of coffee a person drinks determines its effects on blood pressure. However, many people are sensitive even to a cup of coffee, making them nervous or interfering with sleep.
Boiled, plunger pot, Turkish and espresso coffee can increase blood cholesterol levels, but filtered, spiced and instant coffee don't. In addition, participants who drink coffee regularly could also be characterized by different behavioral patterns. However, medical research has been confusing; some studies support a link between coffee consumption and hypertension, but others do not, and Italian research from 1987 suggests that coffee may even help lower blood pressure.