Postural orthostatic tachycardia syndrome (POTS) is a condition that affects 1 to 3 million people in the U.S., including Olympic swimmer Katie Ledecky and singer Halsey. POTS is a chronic disorder ...

Sara Moniuszko is a health and lifestyle reporter at CBSNews.com. Previously, she wrote for USA Today, where she was selected to help launch the newspaper's wellness vertical. She now covers breaking ...