Caffeinated coffee improves vascular function

Caffeinated coffee improves vascular functionSipping on to a cup of coffee is known to give you a jump start for the day. But what is not well known is the fact that it may prop up the blood vessels.

According to new findings, drinking caffeinated coffee may improve the efficiency and functioning of small blood vessels.

While coffee boosts cardiovascular health is already established, but studies failed to put forth the mechanism for this benefit.

To know the exact mechanism, researchers at the University of the Ryukyus in Okinawa, Japan recruited 27 healthy adults aged between 22 and 30.

None of the participants consumed coffee on a regular basis.

For the study, participants were administered a one 5-ounce cup of either caffeinated or decaffeinated beverage.

Each participant’s left index finger was monitored to measure the levels of reactive hyperemia, indicating vascular functioning of small blood vessels.

After two days, the procedure of coffee consumption was repeated again – this time by switching caffeinated and decaffeinated drinkers.

Researchers again observed the reactive hyperemia of the participants’ left index finger over a 75-minute span.

Findings of the study

Researchers found that participants who drank caffeinated coffee had a 30 percent higher vascular function as compared to those who drank decaffeinated version of the beverage.

However, drinking caffeinated coffee slightly raised the participant’s blood pressure levels and decreased the finger blood flow as against decaffeinated coffee.

But, heart rate remained same regardless of whether the participant drank caffeinated or decaffeinated coffee.

“Small amounts of coffee may have a benefit, but a higher consumption of coffee definitely raises blood pressure. It definitely raises heart rate, and it makes you more prone to heart palpitations,” cardiologist Vincent Bufalino, a spokesman for the Advocate Cardiovascular Institute in Chicago marked.

“We see that every day in terms of the use of caffeine in patients. A lot of people sense that a cup of coffee gives them a lift but too much can have negative effects,” he warned.

The findings of the study were presented Wednesday at the American Heart Association meet in Dallas.