When was the first kiss? Recent papers have suggested that romantic or sexual kissing began 3,500 years ago in India. But a new paper says kissing is also mentioned in clay tablets from Mesopotamia that predate the Indian texts by about a thousand years.
Danish husband and wife researchers Troels Pank Arboll and Sophie Lund Rasmussen stress that “the behavior did not emerge abruptly or in a specific society, but appears to have been practiced in multiple ancient cultures,” including Egypt.
“The thing about Assyriologists,” Rasmussen said, “is they like to argue with each other, but they don’t really talk to other people.” There may have been practical reasons for humans to kiss, Rasmussen said. “I came across research suggesting that the purpose of kissing, why it could have evolved, is that it serves as an opportunity to evaluate your partner,” she said. “If you kiss somebody with poor teeth, they tend to have bad breath.”
To date, though, science has had relatively little to say about kissing, according to Kirshenbaum, an academic specialist at Michigan State University.A scientific literature search for “kiss” or “kissing” sends you through funky territory before you ever encounter two sets of lips. PubMed’s search engine begins with the KISS1 gene and its product kisspeptin, and proceeds to a cellular process called kiss-and-run.
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