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#561 Anna Warrener: The Evolution of the Human Pelvis, Bipedalism, and Childbirth

The Dissenter

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Is the Methabolic Hypothesis for Human Altriciality?

The methabolic hypothesis for human altriciality. The idea is that instead of ancy terminating because the baby gets too large to fit through the birth canal, a triggering mechanism has to do with how much metabolic energy mam is able to sustain in order to stay pregnant. And so as mothers hit that peak and level off, and no longer can increase their total energy expenditure. Expedentially, there's a point at which that line crosses mam's total energy expenditures. But is there already good support for it? Inasmuch as am, you know, we have some aggregate studies of doubly labelled water. Ut, but the data that we have certainly supports ta suggestion

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