Add Yahoo as a preferred source to see more of our stories on Google. Human childbirth may not be unique, a new review finds similar birth risks across many mammals. (CREDIT: Shutterstock) Human birth ...

The 'costly son' hypothesis zeroes in on male births The team compiled sex-specific birth-weight data for 140 placental mammal species across 11 mammal orders and compared sex differences among ...

Women who have been exposed to multiple traumatic experiences during childhood have more difficult births than others. They are much more likely to need emergency cesarean sections, suffer major ...

For centuries, childbirth’s pain was explained as punishment; more recently, as the evolutionary price of walking upright and bearing large-brained babies. But if difficult birth occurs across ...

Across the mammal family tree, difficult labor appears far more common than many people have assumed, turning up not just in livestock and pets, but in wild deer, seals, whales, primates, and ...

Larger babies passing through a narrow birth canal can increase the chance of obstructed labor, affecting mortality for both the baby and mother. Yet difficult births, including cases in which a fetus ...

Difficult birth has been recorded in species that seem, at first glance, to have little in common with humans. Even whales and dolphins show obstructed births, despite lacking a fully formed bony ...