Seiko Noda, a Liberal Democratic Party lawmaker, surprised the public late last month by revealing in a magazine article that she got pregnant at age 49 through artificial insemination using a donated egg from a third person.
When she turned 50 on Friday, she made an official announcement about her pregnancy at a political fundraising party in Tokyo.
Noda has already made public her in vitro fertilization attempts with her former partner in her book "Watashi wa Umitai" ("I Want to Give Birth"), in which she wrote about her years of fertility treatment that resulted in a miscarriage.