The Truth About Calories and Weight Loss | Dr. James Hill

Dr. James Hill—a expert on obesity, metabolism, and long-term weight management—joins me this week to unpack the biggest challenges in sustainable fat loss. Dr. Hill has spent decades researching weight control and the factors that determine whether people can keep weight off long-term. We discuss the science behind energy balance, metabolic flexibility, and why long-term weight loss is about more than just diet and exercise. He shares insights from his groundbreaking work with the National Weight Control Registry, the role of GLP-1 medications, and why physical activity is the key to preventing weight regain.

We cover:

• The critical differences between weight loss and weight maintenance
• Why physical activity is perhaps more important for keeping weight off than losing it
• The National Weight Control Registry: lessons from long-term weight loss success stories
• How metabolism, muscle mass, and energy expenditure affect weight regain
• The role of protein and resistance training in preserving lean mass
• The impact of GLP-1 medications on weight loss and why most people regain weight after stopping them
• The psychology of weight maintenance: mindset, self-monitoring, and behavior change

If you’ve ever struggled to keep weight off, or you’re interested in the latest research on metabolic health and sustainable weight management, this episode is a must-listen.

Who is Dr. James Hill?

Dr. James Hill is an internationally recognized expert on obesity, metabolism, and weight management. He is the co-founder of the National Weight Control Registry, the largest ongoing study tracking individuals who have successfully lost weight and kept it off long-term. Dr. Hill has published over 400 scientific articles and has led pioneering research on energy balance, metabolic flexibility, and the role of physical activity in weight maintenance. He is a professor at the University of Alabama at Birmingham and has served as the President of The Obesity Society. His work has been instrumental in shaping modern obesity treatment and prevention strategies.

This episode is brought to you by:

• Puori - Code DRLYON for 20% off sitewide!– https://Puori.com/DRLYON   
• Cozy Earth - Code DRLYON for up to 40% off! – https://cozyearth.com/DRLYON
• BON CHARGE - Code DRLYON for 15% off! - https://boncharge.com/DRLYON
• Manukora- Get $25 off the Starter Kit at https://manukora.com/DRLYON

Find Dr. James Hill at:

• International Weight Control Registry https://internationalweightcontrolregistry.org/
• Scholars Profile - https://scholars.uab.edu/6698-james-hill
• Academic Website - https://www.uab.edu/norc/about-us/leadership/executive-committee/james-hill

Find me at:   

Instagram: @drgabriellelyon

TikTok: @drgabriellelyon

Facebook: facebook.com/doctorgabriellelyon

YouTube: youtube.com/@DrGabrielleLyon

X: x.com/drgabriellelyon

Apply to