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The well effects of coffee is not a new subject. Scientists in Japan have proved that extra caffeine actually reduced the risk of dying from cardiovascular disease.

Scientists presented their findings on Wednesday at American Heart Assn.’s Scientific Sessions meeting. They explained that the coffee helped in boosting the function of small blood vessels in healthy people.

27 young adults of 20-something age group were considered as a part of the study. Although they were not a regular coffee drinkers but they started for the study.

They were served caffeinated and decaffeinated coffee on alternative days. Researchers were then measured their blood pressure after consuming the drinks.

Researchers used the technique called laser Doppler flowmetry. In this method they placed a probe on the tip of each participant’s left thumb or index finger. Scientists then interrupted the blood flow to the hand for one minute. After the blockage, they measured the time blood took to return to normal.

In the measurement it was evident that the flow was 30 percent higher in the finger (or thumb) when they drank the caffeinated beverage. The results measured were important as it showed if the small blood vessels in the body were working well.

“This gives us a clue about how coffee may help improve cardiovascular health,” Tsutsui said in a statement from the American Heart Assn. Tsutsui is a professor of pharmacology at the University of the Ryukyus in Okinawa, Japan, reported Los Angeles Times.

If scientists can figure out how caffeinated coffee helps small blood vessels work better, “it could lead to a new treatment strategy for cardiovascular disease in the future,” Tsutsui added.