High stress during pregnancy linked to elevated cortisol in toddlers’ hair, study finds

Researchers at Washington University in St. Louis and Dartmouth College have discovered a connection between toddler hair cortisol levels — a long-term stress biomarker — and maternal prenatal depression. The findings, published in the American Journal of Human Biology, suggest that a child’s long-term stress physiology — or how the body responds to stress — may […]

WashU Expert: Some parasites turn hosts into ‘zombies’

From haunted houses to video games, movies and trick-or-treaters, zombies are everywhere this time of year. But zombies aren’t real — or are they? While the flesh-eating undead portrayed on television are just fiction, there are clear examples of parasites that have evolved to manipulate their hosts, often in ways that affect host behavior to favor […]