Numerous factors affect how fast we age, from the environment down to our DNA. Even the number of children you have, and when you have them, can alter the aging process and lifespan, a new study finds ...

Elephants are pregnant for up to two years. Females of some fish species starve for weeks while holding dozens of eggs and hatchlings inside their mouths. And pregnant humans commonly endure months of ...

Reproduction permanently alters females' bones in ways not previously known, a team of anthropologists has found. Its discovery, based on an analysis of primates, sheds new light on how giving birth ...

Add Yahoo as a preferred source to see more of our stories on Google. Mammals experience a 10% increase in lifespan when reproductive opportunities are suppressed. The study analyzed records from 120 ...

Mammals experience a 10% increase in lifespan when reproductive opportunities are suppressed. The study analyzed records from 120 zoos to determine the hidden cost of reproduction. When mammals have ...