From Science News
Embryos Appear to Reverse Their Biological Clock Early in Development
By Erin Garcia de Jesús
Medical Moment for February 2023
As people age, so do all of our cells, which accumulate damage over time. But why our offspring don’t inherit those changes — effectively aging a child even before birth — has been a mystery. “When you are born, you don’t inherit your parents’ age,” says Yukiko Yamashita, a developmental biologist at MIT who studies the immortality of germline cells such as eggs or sperm. “For some reason, you are at zero.”
