Obesity Isn’t Your Fault: Biology, Addiction & Solutions with Dr. David Kessler

Mark Hyman

Oct 1, 2025

Episode description

Obesity is often seen as a matter of willpower, but science tells a different story. My guest today, Dr. David Kessler—former FDA commissioner, lawyer, physician, and the man who took on Big Tobacco—explains why biology, not blame, drives our struggles with weight. On this episode of The Dr. Hyman Show, we talk about why weight struggles are so common today, what new drugs can and can’t do, and how his new FDA petition targets one of the biggest culprits: processed refined carbs. Catch the full conversation on YouTube, or listen wherever you get your podcasts.

[YOUTUBE THUMBNAIL]

You’ll learn:

• How food companies use ingredients like processed refined carbs to make products irresistible

• Why GLP-1 drugs help many lose weight—but can’t fix the food environment driving the crisis

• How belly fat fuels heart disease, diabetes, and cancer—and why ultraprocessed foods are a big part of the problem

• Simple ways to break free from foods engineered to make you overeat

• What Dr. Kessler’s FDA petition could mean for limiting processed carbs in our food supply and improving our collective health Plus, here’s a bonus: We’ve adapted Dr. Kelsser’s petition into a free PDF guide—The Hard Truth About Processed Carbs—so you can see exactly how these ingredients affect your health…and why his FDA petition REALLY matters. Tune in, download the guide, and find out how you can be part of the solution.

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Mindsip insights from this episode:

Leverage GLP-1 drugs to create aversion to eating through nausea

GLP-1 agonist drugs like Ozempic are highly effective because they delay gastric emptying and push you to the edge of nausea, creating a powerful aversion to eating.

#GLP1

#weight-loss

Investigate un-addicted individuals for insights on food behavior

The most interesting people to study may not be the 80% who find food rewarding, but the minority for whom food is not a salient, addictive stimulus.

#addiction

#food

Address metabolic dysfunction to improve health outcomes

According to the most recent data, a staggering 93.2% of Americans have some degree of metabolic dysfunction or insulin resistance.

#insulin

#metabolism

Challenge food industry to prove safety of ultra-processed ingredients

A petition argues that key ingredients in ultra-processed foods are no longer 'Generally Recognized As Safe' (GRAS), which could force the food industry to prove their safety or reformulate products.

#processed-food

#safety

Evaluate ingredient safety based on cumulative consumption effects

Food safety law requires evaluating an ingredient's safety based on its cumulative effect at the doses people are actually consuming, not just in small, isolated amounts.

#safety

Identify four components of ultra-processed foods

Ultra-processed foods are essentially reassembled from four main components: refined sweeteners, refined starches, added fats and oils, and salt.

#nutrition

#processed-food

Recognize food's addictive potential similar to nicotine

The dopamine hit from food is pharmacologically much closer to nicotine than to heroin, explaining its powerful and widespread addictive potential.

#addiction

#dopamine

Combat toxic fat to protect organ health

The health issue is not weight itself, but the metabolically active 'toxic fat' that infiltrates organs like the liver, pancreas, and heart, causing disease.