Just two beers can increase your chances of having an accident, say doctors at the University of Missouri.
It's well known that drinking alcohol increases the risk of accidental injury. What has perhaps not been clear is the level of drinking that poses a risk. Doctors at the University of Missouri studied patients admitted to three different emergency rooms to see what impact alcohol had on the likelihood of injury.

They learned that the risk of injury increases significantly after just two drinks consumed over six hours - a very moderate level of consumption. Just two 12 ounce beers drunk over this time doubles the risk of injury. If three to four are consumed, the risk goes up to five times and if five or six drinks are taken, the risk of injury goes up ten fold. Therefore short-term, acute exposure to alcohol does increase the risk of injury quite a lot.