Video: Jared Dienst, along with parents and NBC's chief medical editor, Nancy Snyderman, speak with TODAY's Matt Lauer about the difficulties of diagnosing a child who is suffering from a stroke.
Video: Inspired by her recent assignment in devastated Haiti, NBC's chief medical editor Dr. Nancy Snyderman explains the power of simplicity to TODAY's Matt Lauer.
Video: Can cracking your knuckles lead to arthritis? Can jumping rope weaken your bones? Prevention magazine's Courtenay Smith debunks health-related tales.