Weightless: A Doctor's Guide to Glp-1 Medications, Sustainable Weight Loss, and the Health You Deserve

A board-certified endocrinologist shares her must-have guide to using GLP-1 medications, such as Ozempic, Wegovy, Mounjaro, and Zepbound, to reverse obesity and take charge of your health, with established strategies for maximizing your results

"This book is a game-changer. Dr. Salas-Whalen gives you the science and the compassion this conversation has been missing. You are not alone anymore."--Mel Robbins, #1 New York Times bestselling author of The Let Them Theory

Whether your struggle to lose weight has lasted years or started more recently, GLP-1 medications will help you finally end it. While GLP-1s have redefined how we treat obesity, the search for expert care is likely to leave you feeling confused, overwhelmed, and unheard. Misconceptions are everywhere. Many doctors are still catching up with the science. And you may find a prescription but not the medical supervision you need for the best results.

In Weightless, Dr. Rocio Salas-Whalen, a board-certified endocrinologist and expert in obesity medicine, delivers the real-world strategies that have helped thousands of patients achieve health goals that once felt out of reach. Her deeply compassionate approach sees obesity, not as a personal failure but as a chronic health condition that deserves medical treatment. Drawing on years of clinical expertise and the lived experience of her patients, she explains how to:

- Rethink what you know about weight management Learn why "eat less, move more" is an outdated and ineffective prescription.
- Give your GLP-1 journey a strong start: Choose an experienced provider, ask the right questions at every appointment, and get better outcomes if you're using telehealth.
- Preserve muscle for long-term success: Follow Dr. Salas-Whalen's advice for increasing protein intake and optimizing your strength training.
- Protect your progress: Manage side effects with evidence-based care, recognize when you need a dosage change, and know what to do when GLP-1s don't work.
- Adjust to life after GLP-1s: Navigate the unexpected physical, social, and psychological changes that accompany significant weight loss.

Comprehensive and empowering, Weightless offers judgment-free support that ensures you never feel alone on this journey.

Author: Rocio Salas-Whalen
Publisher: Rodale Books
Published: 12/30/2025
Pages: 288
Binding Type: Hardcover
Weight: 1.02lbs
Size: 9.50h x 6.42w x 0.97d
ISBN: 9780593981207


Review Citation(s):
Publishers Weekly 11/03/2025

About the Author
Rocio Salas-Whalen, MD, is a board-certified endocrinologist specializing in obesity medicine. A recognized leader in the treatment of obesity, perimenopause, and menopause, she is known for integrating cutting-edge therapies--such as GLP-1 medications--into compassionate, personalized care. Originally from Mexico, Dr. Salas-Whalen immigrated to the United States to pursue her dream of becoming a physician. Today, she leads a thriving private practice in New York City. A sought-after expert in both English- and Spanish-language media, she has been featured on The Mel Robbins Podcast, UnaVision, and more.