A Doctor's Guide to GLP-1 Medication, Sustainable Weight Loss, and the Health You Deserve
Weight loss doesn’t need to feel like a full-time job.
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 such as Ozempic, Wegovy, Mounjaro, and Zepbound 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.
Available everywhere books are sold on December 30, 2025.
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Download the Introduction to WEIGHTLESS and start reading today!
What the Expert Readers are saying:
“Weightless reframes obesity as the chronic, complex condition it truly is—not a willpower problem, but a medical one. With clarity and care, Dr. Salas-Whalen offers readers the tools to understand their bodies, navigate treatment options, and reclaim control over their health journeys. This book is rigorous, compassionate, and deeply validating.”
—Mary Claire Haver, MD, New York Times bestselling author of
The New Menopause and The Galveston Diet
“This book is a game-changer. It says what too many people need to hear but rarely do: Struggling with your weight is not a personal failure. And asking for help is strength, not shame. Dr. Salas-Whalen gives you the science and the compassion this conversation has been missing. If you’ve ever felt isolated in this fight, you need to read this book. You are not alone anymore.”
—Mel Robbins, New York Times bestselling author of
The Let Them Theory and host of The Mel Robbins Podcast
“Dr. Rocio Salas-Whalen has delivered a powerful road map for reclaiming your metabolic health. Packed with science-backed strategies and empowering encouragement, Weightless will put you in the driver’s seat of your own care and transform what you think is possible for your well-being.”
—Vonda Wright, MD, New York Times bestselling author of Unbreakable
About Dr. Rocio Salas-Whalen
Dr. Salas-Whalen is a double board-certified physician in Endocrinology and Obesity Medicine. She is a trailblazer in the fields of obesity and peri and menopause management, recognized for her expertise in integrating groundbreaking treatments like GLP-1 medications into personalized care plans. As one of the earliest adopters of these transformative therapies, she has helped redefine the approach to weight management, providing sustainable solutions to a historically misunderstood condition.
Her work extends beyond weight management to include a passionate focus on perimenopause and menopause. Dr. Salas-Whalen is at the forefront of what she calls a “menopause redo,” where modern science and tailored care empower women to embrace this life stage with strength and vitality. Combining hormonal expertise with a deep understanding of midlife health, she helps patients navigate complex transitions confidently and clearly.
In addition to clinical practice, Dr. Salas-Whalen has a very strong social media presence, including her Instagram @drsalaswhalen, where she educates, inspires, and empowers individuals to take charge of their health.
Dr. Salas-Whalen is writing a comprehensive guide on obesity and GLP-1 medications and is the founder of @StrengthMD, an initiative to promote wellness and empower individuals to take control of their health journeys.
An immigrant from Mexico who realized her dream of becoming a physician after moving to the United States, Dr. Salas-Whalen now leads a thriving practice in New York City. Her innovative, science-based approach has made her a trusted authority in redefining care for women and those living with obesity.
Dr. Salas-Whalen’s mission is clear:
to transform lives by addressing the root causes of health challenges with empathy, cutting-edge science, and unwavering dedication.

Discover how to:
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Choose a knowledgeable doctor and ask the right questions at your first appointment
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Select the best GLP-1 medication for your needs and understand how it will change your experience with food and hunger
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Adopt the two other key “prescriptions”—eating more protein and strength-training—to get the most from your treatment and prevent muscle loss
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Monitor your progress, avoid side effects, and know when you need to adjust your dose
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Navigate the impacts of GLP-1 therapy on your relationships with others and yourself
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