Evolved birth physiology meets modern birth practice: Sustained effects of planned cesarean delivery on child hair cortisol in Brazil
Proc Natl Acad Sci U S A. 2025 Dec 16;122(50):e2519365122. doi: 10.1073/pnas.2519365122. Epub 2025 Dec 8. ABSTRACT Cesarean section (CS) is the most common major …