#evolution #Tibet
"Humans Are Evolving Right in Front of Our Eyes on The Tibetan Plateau
In the more than 10,000 years the region has been settled, the bodies of those living there have changed in ways that allow the inhabitants to make the most of an atmosphere that for most humans would result in not enough oxygen being delivered via blood cells to the body's tissues, a condition known as hypoxia.
(. . .)
Beall has been studying the human response to hypoxic living conditions for years. In research published in October 2024, she and her team unveiled some of the specific adaptations in Tibetan communities: traits that help the blood deliver oxygen.
To unlock this discovery, the researchers delved into one of the markers of what we call evolutionary fitness: reproductive success. Women who deliver live babies are those who pass on their traits to the next generation.
The traits that maximize an individual's success in a given environment are most likely to be found in women who are able to survive the stresses of pregnancy and childbirth.
These women are more likely to give birth to more babies; and those babies, having inherited survivability traits from their mothers, are also more likely to survive to adulthood, and pass the traits on to the next generation."
https://sfist.com/2025/05/23/day-around-the-bay-officials-say-stay-out-of-water-at-ocean-beach-memorial-day-weekend/
Science | The Guardian
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