Mark Lewis was inspired to become a cancer doctor after living through the highs and lows of his father’s cancer journey. On day one of his oncology fellowship, Mark developed an abdominal pain and was suddenly diagnosed with the very same cancer that took his father; a cancer, he learned, that can be passed down to his children as well. In this episode, Dr. Diane Reidy-Lagunes chats with Dr. Mark Lewis, Director of Gastrointestinal Oncology at Intermountain Healthcare, about how his diagnosis has changed the way he practices medicine, and what every person should know about genetic testing and hereditary cancers.

Hear more from Dr. Mark Lewis on his weekly podcast, "Is It Serious?"

Make an appointment with MSK's Clinical Genetics Service here.