JOHN, MERIDIAN, ID
"The concentration of alcohol in the brain of even a terrifically drunk person doesn't come close to the levels required to kill living cells," says Stephen Braun, a science writer and the author of Buzz: The Science and Lore of Alcohol and Caffeine. People become intoxicated with only a tenth of a percent of alcohol in their blood. But alcohol is a "dirty bomb," Braun says. Rather than zeroing in on one specific region of the brain, alcohol impacts your entire noggin. The result: A few drinks can temporarily block new memory formation, dull your thinking, and reduce muscle control.