The Proof with Simon Hill

How to Lose Weight and Fix Your Metabolism in 2026 | Dr Mauricio Gonzalez

The Proof with Simon Hill

Show Notes

For decades we have treated the number on the scale as the goal of metabolic health. Dr Mauricio Gonzalez, a triple board-certified physician and endocrinology fellow practising in New York, makes the case that we have been measuring the wrong thing.

In this conversation we explore why liver fat, not body weight, is becoming the real target, what the latest weight-loss medications can and cannot do, and how to cut through the hype and dogma that surround this field.

What we cover:

Why isolated blood tests and blood pressure readings tell you very little

The myth that GLP-1 medications are "the easy way out"

Why liver fat may matter more than body weight

How diabetes clinics now remove medications instead of adding them

Which supplements earn their place, and which Mauricio has cooled on

The minimum effective dose for exercise, and knowing when "enough" is enough

A grounded, practical conversation with a doctor who meets people where they are. If you enjoy the show, please take a moment to rate and review The Proof on Apple Podcasts or Spotify, it genuinely helps more people find these conversations.

To connect with Dr Mauricio Gonzalez, follow him on Instagram, X, and YouTube, or visit his website at drmauriciogonzalez.com.

Intro (00:00)

Minimum Effective Dose for Exercise (01:38)

Why Continuity of Care Reduces Mortality (07:09)

How Type 2 Diabetes Silently Develops Over 12 Years (09:23)

Statin vs. PCSK9 Inhibitor: How Doctors Choose (12:45)

How GLP-1 Drugs Transformed the Diabetes Clinic (21:46)

Why Doctors Now Measure Organ Fat, Not Body Weight (30:25)

How Fatty Liver Disease Is Diagnosed (34:05)

How Liver Fat Drives Insulin Resistance (40:47)

Wegovy vs. Zepbound: How to Choose a GLP-1 (48:18)

Should Lean People Use GLP-1s for Metabolic Health? (51:53)

Why Patients Feel Guilty Taking GLP-1s (54:13)

How Mauricio’s Nutrition Advice Has Evolved Over a Decade (01:04:35)

Supplements on GLP-1s: What's Worth Taking (01:09:42)

Minimum Effective Dose for Resistance Training (01:16:52)

When Health Optimization Becomes Counterproductive (01:21:20)

Want to support the show?

The best way to support the show is to use the products and services offered by our sponsors. To check them out and enjoy great savings, visit theproof.com/friends. You can also support the show by leaving a review on the Apple Podcast app and sharing your favourite episodes with friends and family.

This episode is brought to you by:

38TERA

Consider 38TERA's DMN prebiotic supplement a daily multivitamin for your gut. Formulated by yours truly and gastroenterologist Dr Will Bulsiewicz. Use code THEPROOF for a discount at checkout.

38Tera ships to the United States, Australia, and New Zealand.

SwimClub

SwimClub is a science-backed supplement designed to support male fertility, sperm health, and reproductive wellness. Head to swimclub.co to get 25% off your first order with code THEPROOF.

Eight Sleep

Upgrade your sleep with the Pod 5 Ultra by Eight Sleep. Use code THEPROOF at eightsleep.com/theproof for up to $500 off. The 4th of July sale ends July 12, and you get 30 days to try it at home and return it if you don't love it.

Eight Sleep ships to the U.S. (excluding Alaska, Hawaii, and territories), Canada, Mexico, most of the EU, the U.K., Australia, the UAE, Saudi Arabia, and Switzerland.

Truemed

Truemed helps qualified customers use pre-tax HSA or FSA dollars on health-related products like fitness, recovery, and sleep tools, often saving around 30% on average. Visit truemed.com/THEPROOF to see what qualifies. This is hands down the best way to make the most of your health dollars.

ProLon

ProLon’s 5-Day Fasting Mimicking Diet is a science-backed, plant-based program designed to support metabolic health while keeping your body in a fasting-like state. Get 15% off sitewide plus a $40 bonus gift at ProLonLife.com/THEPROOF.

ProLon ships within the United States.

WHOOP

Whoop, the most advanced fitness and h

More from The Proof with Simon Hill

Oct 19, 2026

Practising registered dietitian and senior research fellow at the University of Oxford, Dr Nicola Guess, returns to the show to discuss a new study whose findings were interpreted in quite different ways the week it came out. Dr Samuel Klein’s group at Washington University assigned people with prediabetes to one of three diets, carefully controlled their weight loss, and found that the arm labelled ketogenic reduced liver fat by 67%.

Oct 12, 2026

This is Christopher Gardner's eighth appearance on the show. Christopher is a nutrition scientist at Stanford, director of the Stanford Nutrition Studies Research Group, and the author of a new book, Food Sense: What to Eat and Why. He has run more than 20 human diet trials over three decades.

Oct 5, 2026

A few weeks ago I published my own heart scans, and one number travelled further than the rest: a 48% drop in plaque over 16 and a half months. The question underneath that video was the obvious one. How? This episode is the answer, and it is also the part I could easily have left out.

Sep 28, 2026

Howard Luks is an orthopaedic surgeon with almost 30 years of experience, and a good deal of his week is spent telling people they do not need an operation. We work through the joints that bring most people into a clinic, knees, shoulders, Achilles tendons and ankles, and separate what a scan is actually telling you from what it is being used to justify.

Sep 21, 2026

This is part two of my conversation with Dr Federica Amati, Head Nutritionist at ZOE and author of the Sunday Times bestseller Every Body Should Know This. In part one we covered preconception, fertility, and pregnancy nutrition. Here we follow the first 1,000 days through to the end: birth, breastfeeding, weaning, and the environmental exposures behind all of it.

See all episodes →