Philadelphia nurse Casey Cattie, 30, began waking with intense night sweats last August, but multiple medical tests found nothing wrong. Her Oura Ring, however, repeatedly flagged “signs of illness.”
Months later, during a trip to Iceland, Cattie experienced severe breathing problems. Doctors found over a gallon of fluid around her lungs and suspected cancer. Upon returning to the U.S., she was diagnosed with Stage 4 Hodgkin lymphoma.
Cattie is now halfway through 12 rounds of chemotherapy and immunotherapy, with recent scans showing no visible tumors. She credits her wearable device for detecting early warning signs and urges others to advocate for their health when something feels wrong — even if initial medical tests come back normal.
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