Dr. Srihari S. Naidu speaks with Parade to answer all our questions about pacemakers.

Nancy Guthrie’s 2 a.m. pacemaker spike on the day she vanished could mean that the elderly woman was involved in a heart rate-surging struggle with her possible captors, a lead cardiologist speculated Thursday.

A pacemaker is a small, battery-powered device that controls the heartbeat. Our heartbeats are controlled by a highly efficient, biological electrical system that ensures our heart steadily pumps blood to the rest of the body. But sometimes — due to age ...

Older adults are often associated with frailty and weakness, but their years of living provide resilience to endure crises and trauma, experts say.

Laura holds a Master's in Experimental Neuroscience and a Bachelor's in Biology from Imperial College London. Her areas of expertise include health, medicine, psychology, and neuroscience. Laura holds a Master's in Experimental Neuroscience and a Bachelor ...

Innovative symbiotic transcatheter pacemaker harvests heart motion energy for lifelong pacing. Learn how this could transform cardiac care.

The FBI is now heavily involved in the investigation into the disappearance of Nancy Guthrie, the mother of "Today" show host Savannah Guthrie. As the family makes another plea for her return, Jan Carabeo breaks down the latest timeline of known events connected to the missing Arizona woman.

Sheriff Chris Nanos takes questions on day 6 of the search for the abducted 84-year-old mother of NBC morning show co-host Savannah Guthrie.