Can caffeine in coffee restore heart health? Coffee common sense

Coffee seems to offer mysterious heart health benefits, but doctors struggle to explain why. There's a small new study in Japan

Caffeine in a cup of coffee can help your capillaries function better and relieve intense stress on your heart.

According to research presented at the annual meeting of the American Heart Association, a cup of caffeinated coffee has more power than decaffeinated coffee.

Increases blood flow through capillaries to fingertips by 30%. Dr. Masato Tsutsui, of the Faculty of Pharmacy at Okinawa University, said that these microbleeds

Tubes regulate the ease with which blood flows through the circulatory system and body tissues.

For this article, 27 non-regular coffee drinkers aged 22-30 were asked to drink 5 ounces of decaffeinated or caffeinated coffee

Noninvasive laser instruments were used to measure blood flow between fingers. After two days, drink a second cup of decaffeinated or caffeinated coffee,

Neither the researchers nor the participants knew when they would be drinking caffeinated coffee. Study finds that drinking caffeinated coffee

It improves microvascular blood flow by nearly one-third, and the effect lasts for 75 minutes. Although drinking caffeinated coffee causes a slight increase in blood pressure,

But heart rate didn't change in either group.

Dr. Tsutsui said the increase in blood flow may be due to improved vascular lining function, and the researchers linked improved endothelial function to future heart failure.

Heart failure, stroke, heart disease. Dr. Gordon Tomaselli, of Johns Hopkins University School of Medicine, said previous studies had shown

Coffee drinking has been linked to a lower risk of heart disease, heart failure and stroke, researchers have found.

But caffeine also increases blood pressure, which can damage arteries for reasons scientists don't yet understand.

Dr. Tomaselli, former president of the American Heart Association, said this is an interesting finding to understand why coffee is beneficial. but

How much coffee does it take to be effective? Dr. Tsutsui pointed out that research from the U.S. Institutes of Health shows that drinking more than six cups of coffee a day can make

Men reduced their risk of premature death by 10 percent; women by 15 percent.

The study, published in the New England Journal of Medicine, found that the more coffee one drank each day,

The lower the risk. But because the study involved only a small number of participants, it's unclear whether coffee is actually good for the heart.