Although babies do practice breathing movements in the womb to train their muscles, they don’t actually breathe in oxygen and breathe out carbon dioxide like you do. Instead, oxygen and carbon dioxide ...

Peak concentrations of testosterone in your baby boy’s body are comparable to the amounts found in adult men at around week 16 of pregnancy! Between 16 and 20 weeks, testosterone levels fall until ...

For example, only about 30% of infants born at 22 weeks survive, and just under 56% survive birth at 23 weeks, according to a 2022 study published in the journal JAMA. The artificial womb could be ...