On July 3, 2025, Sohei Kamiya, leader of the Sanseitō party, made remarks during his first campaign speech for the Upper House election in Tokyo stating that "older women cannot have children." Kamiya described this as a biological fact rather than discrimination, emphasizing the need for Japan to create a society where young women feel safe and supported to have children, rather than merely being encouraged to work. The comment sparked controversy and discussion about ageism and gender issues in Japan. The Sanseitō party's official YouTube channel subsequently restricted access to the portion of the video containing Kamiya's statement. The remarks have drawn attention amid ongoing debates over Japan's declining birthrate and policies related to childcare and education. Public figures and media outlets have highlighted the sensitivity of the topic, with some recalling past derogatory references to women in reproductive contexts. Kamiya later addressed the intent behind his comments, seeking to clarify his position amid the backlash.