The billionaire – a self-described “pronatalist” who has repeatedly stated that he believes in having a high number of kids as a way to combat what he sees as a looming “population collapse” – has 13 children with four women, some of whom are believed to have been conceived through IVF.

Grimes took to X on Thursday, Feb. 20, to plead with Elon Musk to reply to her concerning their child's "medical crisis." She said the situation is dire, and asked Musk to "respond asap" or "our child will suffer life long impairment.