After nine months spent as a growing life in someone else’s body, the second a baby is born, they begin growing life in their own body: colonies of tiny bacterial cells ready to begin populating a ...

Infants are generally expected to double their birth weight by five months and triple it by 12 months.

Netflix's 'Joy' tells the groundbreaking story of the first baby born via IVF Keystone/Getty ; Jeff Spicer/Getty On July 25, 1978, Louise Joy Brown became the first baby in the world to be born ...