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Hot flashes? Thank evolution
Date:7/29/2013

is idea, we've extended our lives to the point where we've outlived our egg supply. A woman is born with all the eggs she will ever have -- in contrast to sperm, which men produce throughout their lives.

"Female African elephants seem to give birth into their 50s and occasionally into their 60s, so at least one mammal species appears to have surpassed the typical lifespan for mammalian eggs," Alberts said. "Female killer whales are the opposite -- like humans their fertility peters out in their 30s and 40s, while they often live into their 70s. But there just aren't enough long-term data on other mammals to address the shelf-life hypothesis conclusively."


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Contact: Robin Ann Smith
Ras10@duke.edu
919-668-4544
Duke University
Source:Eurekalert

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