Measuring cortisol in a snippet of hair can reveal a pregnant person's stress level and may one day help warn of unexpected birth problems.
The stress hormone cortisol fuels food cravings, but new research suggests overweight adolescents actually eat less during tough times.
"This study shows how adversity is affecting multiple systems inside a child."
New research could clarify why not all women with traumatic childhoods develop PTSD.
Coyotes now live in and around NYC, LA, and other cities. New research tests how skittish wild creatures become urban denizens.
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