Neanderthal Kissing: Ancient Apes May Have Smooched Too | Science & Tech

Kissing’s Ancient Roots: Research Suggests Lips Locked for 21 Million Years

A new study reveals that kissing isn’t a modern invention, but a behavior stretching back as far as 21 million years, potentially practiced by our ape ancestors and even Neanderthals. The research, published on Wednesday, sheds light on the evolutionary origins of a practice long considered a biological puzzle.

For decades, scientists have debated the purpose of kissing, noting it’s inherent risks – like disease transmission – and lack of obvious survival benefits. This latest examination suggests the act evolved over millennia,potentially serving functions beyond romance.

An Evolutionary Puzzle Solved?

The research, conducted by scientists at the University of Oxford and published in the journal Evolution and Human Behaviour, represents the first complete attempt to view kissing through a broad evolutionary lens. “This is the first time anyone has taken a broad evolutionary lens to examine kissing,” stated a co-author of the study, an evolutionary biologist at the University of Oxford.

The team’s findings build upon existing research highlighting the diverse sexual behaviours exhibited by our primate relatives. To understand the origins of kissing, researchers first established a clear definition: “non-aggressive, mouth-to-mouth contact that did not involve food transfer.”

Did you know? – Kissing involves complex neurological and hormonal responses, releasing chemicals like dopamine and oxytocin, which promote bonding and feelings of pleasure.

Tracing Kissing Back to Our Primate ancestors

The results indicate that kissing is an “ancient trait” within the large ape family, originating in primate ancestors between 17 and 21 million years ago. According to an Oxford University statement, kissing “was retained over the course of evolution and is still present in most of the large apes.”

researchers began by compiling data on modern primates known to engage in kissing, including chimpanzees, bonobos, and orangutans. They then mapped this behavior onto the primate family tree, using evolutionary modeling to estimate the likelihood that ancient ancestors also participated in similar interactions.

Pro tip: – Observing primate behavior in the wild, and in controlled settings, provides crucial insights into the evolutionary roots of human actions.

Neanderthal Smooches and Staying Warm

Interestingly, the study suggests a potential practical benefit for our extinct human relatives. Researchers theorize that Neanderthals may have engaged in kissing to stay warm during the Ice Age. Previous research has already established that humans and Neanderthals shared oral microbes through saliva, hinting at the possibility of interspecies kissing.

The findings offer a captivating glimpse into the deep history of a seemingly simple human behavior, demonstrating that even the most intimate of gestures can be traced back to our earliest ancestors. This research underscores the complex interplay between biology, behavior, and evolution, revealing that even actions we take for granted have roots stretching back millions of years.

Reader question: – Could the function of kissing have changed over time, from a survival mechanism to a primarily social or romantic gesture? What are your thoughts?

Here’s a substantive news report answering the “Why, Who, What, and How” questions:

Why: Scientists have long been puzzled by the biological purpose of kissing, given its potential health risks and lack of obvious survival benefits. This study aimed to understand the evolutionary origins of this behavior.

Who: Researchers from the University of Oxford conducted the study, with contributions from evolutionary biologists. The research also considered the behaviors of modern primates like chimpanzees, bonobos, and orangutans, as well as evidence suggesting kissing among Neanderthals.

What: The study revealed that kissing is an ancient behavior, originating in primate ancestors between 17 and 21 million years ago. It’s an “ancient trait” retained throughout the evolution of large apes. researchers also