From the post: Research shows that fetal lungs themselves provide the signal to initiate labour. When the fetal lungs are sufficiently mature to withstand the transition from life in fluid to airbreathing a protein is released that triggers labour. Disrupting this normal process before a baby is ready can cause a cascade of negative complications.
Read Full Blog Post on WombSisterhood Blog.
https://www.thewombsisterhood.com/post/what-triggers-labor-to-start