Doctors performed a groundbreaking surgery on Cassian before his birth.
Dr. Tara Narula breaks down the now-viral women's health trend.
Viral videos of Hannah Strickland are helping raise awareness for cystinosis.
Sundas Hashmi, 43, was unexpectedly diagnosed six years ago with oligodendroglioma, a slow-growing brain tumor.
ABC News' Dr. Tara Narula breaks down new research on what's in teens' diets and the link between ultra-processed foods and childhood obesity.
ABC News' Dr. Tara Narula breaks down new research suggesting workout timing may be as important as the exercise itself, with potential benefits for heart health.