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Author Topic: Why do people suck on a bleeding wound?  (Read 13535 times)

Dennis W. Cooper

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Why do people suck on a bleeding wound?
« on: 20/04/2011 10:25:28 »
Dennis W. Cooper  asked the Naked Scientists:
   
Hi Chris,   Love your show. 

Why do people instinctively suck on a bleeding  wound, e.g., a small cut on a finger?  Since the mouth contains many germs,  it would seem that a person would not want to do this?

Thanks,

Dennis Cooper Santa Barbara, California,  USA

What do you think?
« Last Edit: 20/04/2011 10:25:28 by _system »


 

Offline cheryl j

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Why do people suck on a bleeding wound?
« Reply #1 on: 22/11/2011 20:41:17 »
I've always wondered that too. And it isnt just a stupid human trick, since animals seem to lick their wounds as well, at least dogs and cats anyway. All I can figure is that perhaps your own mouth bacteria are less likely to be pathogenic than soil organisms. I suupose cleaning a wound with saliva might be better than nothing. There are small amounts of secreted antibodies in spit, but I don't know if its enough to have any effect. I also wonder if there's anything in saliva that makes blood clot faster. People also seem to do this, though, in response to other injuries, even when the skin isnt broken, like when you hit your finger with a hammer. Maybe it decreases the pain sensation.
 

Offline CZARCAR

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Why do people suck on a bleeding wound?
« Reply #2 on: 22/11/2011 20:56:13 »
evolution=2 early hunters,hungry, hunted a boar & both failed & ended up bleeding. 1 sucked his blood & the other didnt
 

Offline RD

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Why do people suck on a bleeding wound?
« Reply #3 on: 22/11/2011 22:59:10 »
I also wonder if there's anything in saliva that makes blood clot faster.

Quote from: Journal of the American Society of H{a}ematology
 Human saliva triggers coagulation ...
http://bloodjournal.hematologylibrary.org/content/early/2011/01/19/blood-2010-06-290460
 

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Why do people suck on a bleeding wound?
« Reply #3 on: 22/11/2011 22:59:10 »

 

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