Spit personality

July 2016

Douglas Granger, Professor of Psychology and Social Behavior, studies saliva and has found that it contains a wealth of information.  A fraction of a drop of spit can be used to measure stress, decipher relationship dynamics, predict heart trouble and even help football players train more effectively, he says: “Laced with hormones, enzymes, DNA and other substances, it can reveal almost everything found in a blood test, but without the needles.” It is also a convenient way to collect DNA, check for drug or alcohol use, identify various aliments and improve athletic performance.

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Photo credit: Steve Zylius, UCI