Lactose intolerance already existed 5,000 years ago

Lactose intolerance already existed 5,000 years ago

Today we take care of ourselves more than several centuries ago and with technology we can measure our cholesterol level, know if we have too much sugar in the blood or even if we are lactose intolerant, something that seems new but that, at least in the latter case, it is not.

As published in the scientific journal Nature Communications, ancient European inhabitants were lactose intolerant 5,000 years ago after they adopted agricultural practices, that is to say, between the Neolithic, the Bronze Age and the Iron Age, which caused the population to undergo various genetic changes over time.

In an investigation in which an international team of scientists participated, a nuclear DNA that had been obtained from thirteen individuals of different ages, between 5700 BC (early Neolithic) and 800 BC (Iron Age), was examined, with results quite showy.

These were in archaeological excavations in Hungary, an area that was historically marked by the great cultural changes that little by little were shaping the prehistory of our continent.

After analyzing the DNA obtained, Professor Ron Pinhasi, from the Earth Institute and the School of Archeology at University College Dublin, lead author of the study, stated that “The findings show a clear progression towards a lighter pigmentation of the skin of humans at that time”.

This pigmentation became clearer as non-local gatherers, hunters and farmers mixed little by little, but something that attracted a lot of attention was the absence of the presence of a persistence of lactose or tolerance to lactose”.

These data could suggest that ancient Europeans would have had domestic animals such as goats, cows and sheep, but at that time the genetics of humans was not so developed as to allow a tolerance for the consumption of milk of these mammals.

For his part, Dan Bradley, from the Smurfit Institute of Genetics, Trinity College, Dublin stated that their results imply that changes in relation to prehistoric technology, such as the adoption of agriculture, the use of metals, etc., were associated with the arrival of new peoples, influencing the existing ones, favoring this change that has lasted to this day.

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Video: Lactose Intolerance: A Scientific Update and the Place of Milk Products