The boozing gene can be traced back 10 million years to the common ancestor humans share with chimpanzees and gorillas, new research claims.
It is believed these ancient forebears were the first to pick up fruits fermenting on the ground after they developed a lifestyle away from the trees.
Individuals able to stomach the boozy fruit would have survived better in this new environment than those who could not, programming the ability into their descendants' genetic codes.
The theory could explain why humans, chimps and gorillas are able to digest alcohol, while our tree-dwelling cousins like orangutans cannot.
"The cause of, and solution to, all life's problems." Via Scientists trace the boozing gene: Taste for drink 'originated 10million years ago in common ancestor of humans and chimps' | Mail Online.