If the scale is going down, how do you know what you're really losing? In this episode, Ana Reisdorf sits down with Dr. Nina Crowley to break down what body composition actually means, why BMI misses so much of the story, how DEXA and bioelectrical impedance differ, and what GLP-1 users should understand about fat loss, fat-free mass, and the ongoing conversation around “muscle loss” during weight loss.

Guest Bio:
Dr. Nina Crowley, PhD, RDN is an expert in obesity care, body composition, and behavior change. With a background as a bariatric dietitian and a PhD in health psychology, she helps translate complex science into practical, real-life strategies. As Director of Clinical Thought Leadership & Partnerships at Seca, her work focuses on helping people look beyond the scale, understanding changes in fat, muscle, and metabolic health, especially in the era of GLP-1 therapies. Nina is also the host of In the Know with Nina, where she breaks down topics like GLP-1 medications, muscle preservation, and sustainable behavior change in a way that’s clear, compassionate, and actionable.

Guest Links:
LinkedIn: https://www.linkedin.com/in/ninacrowley/
Podcast Channel: In the Know with Nina Podcast

Episode Sponsers:

Brello: A GLP-1 telehealth platform connecting you with licensed providers. Visit http://brello.com to learn more.

Maeva: Use code ANA20 at https://maeva.co/ for 20% off your order.

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*The content of this show is for informational purposes only and does not constitute medical advice. The goal of this show is to provide various points of view about GLP-1 Medications. The personal and professional opinion of the guests and their content does not necessarily reflect the opinion of Ana Reisdorf or GLP-1 Hub.