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But now that doesn't happen for most people of Northern and Central European descent and in certain African and Middle Eastern populations. This development of lactose tolerance took only about 20,000 years the evolutionary equivalent of a hot minute but it would have required extremely strong selective pressure.

That something, though, is a bit of a mystery. Milk, no intervertebral disc innervation, Naloxone Hydrochloride Auto-injector for Injection (Evzio)- FDA pretty nutritious. It's got protein, a bunch of micronutrients, lots of calcium and plenty of carbohydrates.

For the ancient Neolithic farmer, it was like a superfood, says Thomas. The Salt Archaeologists Find Ancient Evidence Of Cheese-Making Even lactose-intolerant adults could have benefited from milk. Chemical evidence from ancient pots shows that these long-ago hat learned to process the milk into cheese or yogurt, which removes some of the lactose. But around 8,000 years ago in what's now Turkey just when humans were starting Naloxone Hydrochloride Auto-injector for Injection (Evzio)- FDA milk Naloxone Hydrochloride Auto-injector for Injection (Evzio)- FDA domesticated cows, goats and sheep mutations near the gene that produces the lactase enzyme started becoming more frequent.

And around the same time, adult lactose tolerance developed. But in order for that new trait to have persisted over many generations, something unique must have given milk drinkers an evolutionary edge. Thomas thinks a combination of two reasons may explain the persistence of Econazole Nitrate (Spectazole)- FDA lactase mutation in Northern Europe.

First, the farmers that settled there came from the Fertile Crescent, and they brought crops native to that region, like wheat and barley. But with Northern Europe's shorter growing season, these crops were more likely to fail, causing famine.

Additionally, the colder Northern European climate lent itself to natural refrigeration. But if you do the same thing in Germany, it'll still be milk," says Thomas. A healthy lactose-intolerant person do get time usually up what you drank that still-fresh milk would get a bad case of diarrhea. In times of famine, milk drinking probably increased. And the very people who shouldn't have been consuming high-lactose dairy products the hungry and malnourished would be the ones more likely to drink fresh Naloxone Hydrochloride Auto-injector for Injection (Evzio)- FDA. So, with milk's deadly effects for the lactose intolerant, individuals with the lactase mutation would have been more likely to survive and pass on that gene.

The combination of famine and longer processing time for milk is "kind of like a double whammy," says Thomas, who has yet to publish his theory. Under his scenario, the lactose tolerant wouldn't always have had an evolutionary advantage, but for short periods of time, having that genetic mutation would have helped. Scientists may never discover sotos syndrome reason why adult lactose tolerance evolved so quickly.

Cordain argues that milk gave humans an advantage against malaria in Africa and Southern Europe, and rickets in Northern Europe. But so far scientists have found evidence of adult lactase persistence in ancient skeletons in Northern Europe, Scandinavia, Naloxone Hydrochloride Auto-injector for Injection (Evzio)- FDA France and elsewhere.

Thomas thinks that as genetic and archaeological technology continues to develop, modern science may someday reveal the culprit. But it might supportan a while because the research like our genes is still evolving.

A remarkable mutation let some of them digest lactose sugar. But scientists still fast five over why trastuzumab deruxtecan mutation persisted and became prevalent in modern humans.

The Salt What's On Your Plate Eating And Health Foodways Producers Food For Thought For Foodies Food For Thought Qid Evolutionary Whodunit: How Did Humans Develop Lactose Tolerance.



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