Liz Chrastil looking at an MRI of her brain.Liz ChrastilLittle is known about how brains change throughout pregnancy, birth, and postpartum.A neuroscientist scanned her own brain during pregnancy to track its changes.She lost gray matter and improved connectivity via white matter.For how common the phrase "mommy brain" is, we still don't know much about how pregnancy, birth, and postpartum alter a person's brain."It's shocking that in 2024, there's so little information available to us," Dr.