A defining moment for RFK Jr.

This NBC correspondent hid her bowel disease for years. Now she's sharing her story

NBC News correspondent Chloe Melas reveals she hid ulcerative colitis for 15 years and shares her story in a new book co-authored with Judy Batalion.

This 4-in-1 rapid test might get you answers faster than a trip to urgent care

New estrogen research may change how scientists think about women’s aging brains

Experimental weight-loss drug eases painful knee osteoarthritis in two clinical trials

Mutant KRAS vaccination for pancreatic cancer interception: the G12D immunogenicity paradox

Treatment for Celine Dion's diagnosis shows promising early results

A Mayo Clinic trial of CAR-T cell therapy has produced dramatic improvements for patients with stiff person syndrome, the rare autoimmune condition affecting Celine Dion.