Brain of pregnant mother: “gray matter decreased about 4%, and those changes are pretty permanent” Posted on June 30, 2025 by jgordon https://www.yahoo.com/lifestyle/article/im-a-neuroscientist-i-scanned-my-own-brain-26-times-to-see-how-it-changed-during-pregnancy-090020326.html So many questions from this. Researcher imaged her brain during pregnancy.