One in four high school students and adults aged 18 to 34 participated in binge drinking in the past month, according to U.S. researchers. Among high school students who drink, 60 per cent reported binge drinking, defined by the U.S. Centers for Disease Control and Prevention as four or more drinks for women, and five or more for men, over a few hours’ time. It was more common among whites than blacks, Reuters reports, as 16 per cent of whites reported the behaviour compared to 10 per cent of blacks. “Binge drinking increases many health risks, including fatal car crashes, contracting a sexually transmitted disease, dating violence and drug overdoses,” CDC Director Dr. Thomas Frieden said in a statement. Binge drinkers are not necessarily alcoholics, but tend to take risks withouy realizing it.