2 Human Saliva Fun Facts


Human saliva contains a painkiller called opiorphin that is six times more powerful then morphine.

The average American produces 10,000 gallons of saliva in a lifetime: about the same amount of water as leaks from the average American home in a year.

From: 1,227 Quite Interesting Facts to Blow Our Socks Off
by: John Lloyd, John Mitchinson, and James Harkin