Kennedy, H. P., Cheyney, M., Lawlor, M., Myers, S., Schuiling, K., & Tanner, T. (2015). The development of a consensus statement on normal physiologic birth: A modified Delphi Study. Journal of Midwifery & Women’s Health, 60(2), 140–145. https://doi.org/10.1111/jmwh.12254
The consensus statement by ACNM, MANA, and NACPM is that:
“A normal physiologic labor and birth is one that is powered by the innate human capacity of the woman and fetus. This birth is more likely to be safe and healthy because there is no unnecessary intervention that disrupts normal physiologic processes”.