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Your cortisol is probably fine. Here’s what TikTok gets wrong about the “stress hormone”

Sad woman sitting on a sofa with hands clasped.

Use it or lose it: How age affects cognitive skills

A video on a computer screen video showing an older teacher demonstrating lesson on whiteboard, with student watching in foreground.

Is summer bad for body image? Here's what studies say

A stylish man looking in front of the mirror to check his outfit.

Tick populations have surged in the Northeast. Here’s how to keep you and your pets safe this summer.

Silhouette of a tick seen through a leaf in a garden.

This city removed water fluoridation and is now reinstating it. Here’s what it cost residents.

Skyline of Calgary during sunset with golden light reflecting off skyscrapers.

Are eating disorders genetic? Here's the data

A mother having a good time with her young daughter in a cafe outdoors.

What the U.S. can learn from Japan’s experience with an aging population

Four elderly women chatting in a garden in Takayama, Japan.

From New York to Arizona, more states consider curbing drug testing at childbirth

Newborn baby lying in bassinet in hospital with toes and feet in focus.

The hidden gap: Understanding gender disparities in ADHD diagnosis

Young female college student feeling burned out in a classroom.

Understanding ADHD and its treatment: A comprehensive guide

Bottles of ADHD medications such as Adderall, Concerta, and Ritalin.