Research finds ultramarathon running is a risk factor for colorectal cancer
New research recently presented by Dr. Timothy Cannon in a poster session at the 2025 American Society of Clinical Oncology conference is seeking to understand whether ultramarathon running is a risk factor for colorectal cancer.
Dr. Cannon, an oncologist who works at Inova Schar Cancer Institute in Fairfax, Virginia, and his collea…




