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#altitude

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Radical Anthropology

#Tibetan women's ongoing #adaptation to #hypoxia and high #altitude

'Beall and her team made a study of 417 women between the ages of 46 and 86 years who have lived all their lives in Nepal above altitudes of around 3,500 meters (11,480 feet)...
Interestingly, the women who demonstrated the highest rate of live births had hemoglobin levels that were neither high nor low, but average for the testing group.

'But the oxygen saturation of the hemoglobin was high. Together, the results suggest that the adaptations are able to maximize oxygen delivery to cells and tissues without thickening the blood – a result that would place more stress on the heart as it struggles to pump a higher viscosity fluid more resistant to flow.'

( And some aspect of the adaptations could have been inherited from Denisovans)

sciencealert.com/humans-are-ev

ScienceAlert · Humans Are Evolving Right in Front of Our Eyes on The Tibetan PlateauHumans are not yet done cooking.
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