Sarkozy hospitalized after collapse during jog Jul 28, 2009
It can lead to a temporary loss of consciousness but usually is not serious. It is named for the vagus nerve which slows down the heartbeat and reduces arterial tension. (San Francisco Chronicle)
She dived 314 feet with one breath Apr 15, 2009
This shallow-water blackout, which can happen, is just a temporary loss of consciousness. . (MSNBC -- Sports)
Diabetes 'impact on brain power' Apr 12, 2009
HYPOGLYCAEMIA Hypoglycaemia is caused by a lack of sugar (glucose) reaching the brain, which uses it as fuel Symptoms can include sweating, fatigue, hunger, feeling dizzy, feeling weak, a higher heart rate than usual and blurred vision More severe episodes can led to temporary loss of consciousness, convulsions and coma. The volunteers completed seven tests assessing mental abilities such as memory, logic and concentration. (BBC News -- UK)