Drinking coffee may increase blood flow and decrease inflammation in small blood cells.
Researchers from the University of Ryukyus in Japan studied 27 healthy adults ranging from ages 22 to 30, who would drink one cup of randomly assigned caffeinated or decaffeinated coffee. Researchers would then test participant’s finger blood circulation using laser Doppler flowmetry, which is indicative of how well the inner blood vessels are working throughout the body. After drinking caffeinated coffee, participants say a 30 percent increase in blood flow for 75 minutes after drinking.
"This gives us a clue about how coffee may help improve cardiovascular health," study lead Masato Tsutsui, MD, PhD, was quoted as saying. "If we know how the positive effects of coffee work, it could lead to a new treatment strategy for cardiovascular disease in the future.”