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lactose intolerance

Waiting yak.’ A new study analyzing ancient Mongolian teeth may help explain the origins of lactose intolerance in humans.

Ancient Mongolian Teeth Demand New Research Into the Mysterious Origins of Lactose Intolerance in Humans

Over 3000 years ago, the Steppes of Mongolia were dominated by herds of horses, sheep, cows and yaks, and the humans that ate them, according to a new study published this week in the Proceedings of...