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Dr. Kelli Harding is a board certified psychiatrist focused on emotional wellbeing and the interplay between mental and physical health. Her goal is to care for every patient with a comprehensive, holistic approach. She’s the author of THE RABBIT EFFECT: Live Longer, Happier, and Healthier with the Groundbreaking Science of Kindness (Atria Books, available Aug 27, 2019).

In her work as a physician, writer, and educator, Dr. Harding explores how we live, work, and play—the social dimensions of health. These invisible factors affect the body in profound ways, altering metabolism, immune functioning, mental health, and the course of disease. She combines the latest biomedical advances with big-picture public health research and clinical experience to help people live well even with chronic disease or serious illness.

Dr. Harding loves working with individuals, groups, and the general public to support emotional health and relationships. Her warm engaging style focuses on compassion and connection. She’s appeared on Today, Good Morning America, NPR, The New York TImes, Medscape,, Refinery 29, Tracy Anderson’s PER4MANCE PROGRAM, Parents Magazine, and U.S. News and World Report.


“A beautifully written, inspiring book! The Rabbit Effect is truly eye opening and a joy to read. It illuminates vital public health research showing kindness in our day-to-day lives can make the world a healthier, happier place. I recommend this book highly for anyone who wants to live more healthfully.”

—Christy Turlington Burns, humanitarian and founder of Every Mother Counts


“A wonderful demonstration of how our physical health is affected by the kindness we receive—and the kindness we give. Beautifully written and based on really hard science.”

—Lord Richard Layard, professor, London School of Economics, coauthor of The World Happiness Report


“Dr. Harding weaves together compelling clinical vignettes with fascinating medical evidence. This comprehensive, holistic view of health is critical, much needed, and absolutely convincing.”

—Arthur J. Barsky, MD, professor of Psychiatry, Harvard Medical School


“[A] blockbuster book. . . . Dr. Harding shows us that, by being compassionate, giving, and kind human beings, we can win the great rewards of vitality and longevity. Read this book! It will change your life.”

—Mindy Thompson Fullilove, MD, LFAPA, HonAIA, author of Urban Alchemy: Restoring Joy in America’s Sorted-Out Cities


“In this brilliant and delightfully practical book, Dr. Kelli Harding unveils the hidden factors that determine our health and well-being. . . . The Rabbit Effect’s radical argument is that the most promising remedies for our biomedical problems will come from the social world, not the doctor’s office or pharmaceutical lab.”

—Eric Klinenberg, PhD, professor of Sociology and Director of the Institute for Public Knowledge at New York University, also #1 New York Times bestselling coauthor of Modern Romance and author of Palaces for the People


“An inspiring, evidence-based and beautifully written exploration of the profound impact that love, connection and kindness have on our health. Harding's book should be required reading for all health practitioners and anyone with an interest in a living a longer, healthier and happier life.”

—Mark Williamson, PhD, director of Action for Happiness


“This book is fascinating because of Dr. Kelli Harding’s unique ability to combine stories with a deep understanding of the scientific foundation of the stories. This is an extremely compelling book, which will entertain, educate, and impact the readers.”

—Moshe Szyf, PhD, GlaxoSmithKline and James McGill Professor, Department of Pharmacology & Therapeutics, McGill University Medical School


“It’s utterly wonderful. Dr. Harding has reviewed the science on why community matters to individuals’ physical and mental health in a truly masterful manner, which will reach both scientific and lay audiences. I learned a great deal.”

—Laurence Guttmacher, MD, professor of Clinical Psychiatry, Clinical Medical Humanities, and Bioethics at the University of Rochester, School of Medicine & Dentistry


“Dr. Harding knows what our mental health needs. More kindness! This book has a powerful message for us all—backed by ample research—and woven together with the warmth of an expert clinician.”

—Drew Ramsey, MD, assistant clinical professor of Psychiatry at Columbia University and author of Eat Complete