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Humans exchange millions of disease-spreading bacteria when we kiss. Scientists believe that kissing tests the compatibility of mates ― that it all comes down to swapping spit. But where does the behavior come from?
Earlier research hypothesised that the earliest evidence of human lip kissing originated in a very specific geographical location in South Asia 3,500 years ago, from where it may have spread to other regions, simultaneously accelerating the spread of the herpes simplex virus 1.Now,
New Delhi, May 21 (IANS) In a startling revelation, researchers now report that lip kissing was practiced by the peoples of the ancient Middle East 4,500