Why testosterone levels drop and when to consider treatment
Don't count on daily aspirin to prevent colon cancer
Night owls' habits linked to worse heart health
After ablation, exercise may lower atrial fibrillation recurrence
What can cause an enlarged heart?
Women's unique risks for heart disease
Chronic kidney disease: A hidden threat to your heart
Navigating your online patient portal: Best practices
Treating hair loss in men: What works?
Virtual cardiac rehab: Heal your heart from home
Harvard Health Experts and Contributors
List of Experts
Anthony Prince, MD
Contributor
Mark Proctor, MD
Contributing Editor
Stuart Quan, MD
Contributing Editor
Loren Rabinowitz, MD
Contributor
David Ramsey, MD, PhD, MPH
Contributor
Vikram Rangan, MD
Contributor
Prashant Rao, MBBS
Contributor
John J. Ratey, MD
Contributor
Heidi Rayala, MD, PhD
Contributor
Niyoti Reddy, MD
Contributor
Kieran F. Reid, PhD, MPH
Contributor
Emily Reiff, MD
Contributor
William Renthal, MD, PhD
Contributor
Elizabeth Ressler-Craig, LICSW
Contributor
Jenette Restivo
Health Writer; Assistant Director for Digital Content Creation and Engagement, Harvard Health Publishing
Kathryn Rexrode, MD, MPH
Contributor
Kathryn Rexrode, MD, MPH
Contributor
Rachel Reynolds, MD
Contributor
Hope Ricciotti, MD
Editor at Large, Harvard Women's Health Watch
Shauna Rice, BS
Contributor
James Richter, MD
Contributor
Paul M. Ridker, MD
Contributor
Eric Rimm, ScD
Editorial Advisory Board Member, Harvard Health Publishing
Eve Rittenberg, MD
Contributor
Paul Rizzoli, MD
Contributor; Editorial Advisory Board Member, Harvard Health Publishing
Why testosterone levels drop and when to consider treatment
Don't count on daily aspirin to prevent colon cancer
Night owls' habits linked to worse heart health
After ablation, exercise may lower atrial fibrillation recurrence
What can cause an enlarged heart?
Women's unique risks for heart disease
Chronic kidney disease: A hidden threat to your heart
Navigating your online patient portal: Best practices
Treating hair loss in men: What works?
Virtual cardiac rehab: Heal your heart from home