Medical Notes this week…

After serious injury, the leading cause of death is blood loss. But a new study shows that if a person needs massive transfusions, the fresher the blood, the better. The study in the Annals of Emergency Medicine finds that people receiving large transfusions of packed blood more than about three weeks old have about a five percent higher death risk… and the more blood transfused, the higher the risk. Experts say more blood and plasma donors are needed to overcome shortages… and shelf life limits.

If you didn’t sleep well last night, you’re more likely to be angry today. That sounds intuitive, but a study in the Journal of Experimental Psychology proves it– losing just a couple hours of sleep makes you much more likely to react with anger to a frustrating situation. Researchers used annoying noises in the lab to measure anger responses… and found that anger was substantially higher in people who were sleep-deprived. The next step is to see if sleep loss makes people act more aggressively toward others.

And finally… people who grow up in an abusive home are more likely to repeat the behavior themselves. But a new study shows that it’s the opposite in the workplace. The study in the Journal of Applied Psychology shows that people who’ve been abused and mistreated by their bosses are much more likely to become good bosses themselves. Apparently, abused employees learn what not to do when they’re running things.

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