Ever noticed that drunk people who cause accidents that kill others escape harm? Well, the secret of their luck may actually be the alcohol itself. Dr. Ali Salim and colleagues from the Cedars Sinai Medical Center in Los Angeles found that head injury patients who were drunk were significantly less likely to die than sober ones:
The amount of alcohol consumed appears to be important - too little and there is no effect, too much and the beneficial effects are lost, studies on animals suggest.
Experts believe the right dose of alcohol, however, stops the cascade of swelling, inflammation and further destruction of brain cells, known as secondary brain injury.
The latest work, based on more than 38,000 moderate-to-severe head trauma patients, is the largest yet to look at the effects of alcohol on brain injury survival.
This led to an intriguing proposal of giving alcohol to those who just suffered brain injury - call it "booze therapy," if you will: Link
The effect being examined here is a different one- on the brains inflammatory response to injury- the right dose of ethanol inhibits this.
Alcohol intoxication is responsible for the vast majority of serious head injury, so drinking before an accident, even if it does reduce neural injury, is not on the whole protective- (you are about 12% less likely to die if you have a head injury while you have ethanol in your blood stream, but you are at least twice as likley to get a head injury in the first place if you are intoxicated).
Based on this research, it would appear that administering the ideal amount of ethanol in an emergency department setting may be able to reduce neural injury after a head injury. However drinking alcohol at home as a treatment for head injury is likely to result in a concussed person lapsing into unconsiousness and dying from intercranial bleeding. The best advice if you have a head injury is not to drink alcohol, and to get to a hospital.
Dr Jane.