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In this Metabolic Classroom episode, Dr. Bikman explains mitochondrial uncoupling, a process where cells burn fuel without converting all of that energy into usable ATP. Normally, mitochondria are “coupled,” meaning fuel burning is efficiently converted into cellular energy. But when mitochondria become uncoupled, some of that fuel is released as heat instead—like revving a car engine while it’s in park.

Ben explains that this process is especially important in fat tissue. White fat is designed for energy storage and tends to be tightly coupled, while brown fat is rich in mitochondria and uncoupling proteins that burn fuel to generate heat. He then connects this physiology to insulin, showing that insulin appears to make fat-cell mitochondria more tightly coupled and efficient, lowering energy expenditure and making storage easier.

The opposite happens when insulin is low and ketones rise. Research from Dr. Bikman’s lab shows that ketones, especially beta-hydroxybutyrate, can increase mitochondrial respiration in fat cells without a matching rise in ATP production—clear evidence of uncoupling. In human fat biopsies, elevated ketones were associated with markedly higher mitochondrial respiration, suggesting that ketosis can make fat tissue more wasteful with energy.

The larger takeaway is that calories still matter, but hormones influence how efficiently those calories are stored or burned. When insulin is high, the body stores energy efficiently. When insulin is low and ketones are elevated, fat-cell mitochondria may become more uncoupled, allowing more energy to be dissipated as heat rather than stored as fat.

References:

For complete show notes and references, we invite you to become an Insider subscriber. You’ll enjoy real-time, livestream Metabolic Classroom access which includes live Q&A with Ben after the lecture, unlimited access to Dr. Bikman’s Digital Mind, ad-free podcast episodes, show notes and references, and Ben’s Weekly Research Review Podcast. Learn more: https://www.benbikman.com

NOTE: The information presented is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Dr. Bikman is not a clinician—and, he is not your doctor. Always seek the advice of your own qualified health providers with questions you may have regarding medical conditions.

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📢 Ask Dr. Bikman’s Digital Mind (multilingual):

https://benbikman.com/ben-bikmans-digital-ai-mind

📢 Dr. Bikman’s Community & Coaching Site: https://insuliniq.com

Topic:

Amylin is an insulin-sparing satiety hormone released with insulin that slows digestion, restrains glucagon, and helps reduce post-meal glucose spikes. New amylin-based therapies, especially when combined with GLP-1 drugs, may offer powerful weight-loss effects by restoring natural fullness signals rather than forcing insulin higher.

Summary:

In this lecture, Dr. Bikman explains amylin, a hormone released from the pancreatic beta cell alongside insulin. While insulin helps move nutrients into tissues, amylin works mainly through the brain and digestive tract to increase fullness, slow gastric emptying, restrain post-meal glucagon, and reduce blood sugar spikes without forcing insulin higher. This makes amylin an insulin-sparing hormone and a natural complement to GLP-1.

Ben explains why amylin was difficult to turn into a drug: human amylin naturally tends to misfold and form amyloid deposits in the pancreas. Protein engineering solved this problem by creating analogs that activate the amylin receptor without clumping. The first amylin-based drug, pramlintide, proved the concept by reducing appetite, slowing digestion, blunting post-meal glucose rises, and producing modest weight loss, though its short duration and nausea limited broader use.

The lecture then moves into newer amylin-based therapies, especially cagrilintide and the combination drug CagriSema, which pairs cagrilintide with semaglutide. Because amylin and GLP-1 work through overlapping but distinct brain pathways, the combination produces greater weight loss than either hormone strategy alone. The takeaway is that amylin may become one of the most important next-generation targets in metabolic medicine because it supports satiety and glucose control without driving insulin higher.

References:

For complete show notes and references, we invite you to become an Insider subscriber. You’ll enjoy real-time, livestream Metabolic Classroom access which includes live Q&A with Ben after the lecture, unlimited access to Dr. Bikman’s Digital Mind, ad-free podcast episodes, show notes and references, and Ben’s Weekly Research Review Podcast. Learn more: https://www.benbikman.com

NOTE: The information presented is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Dr. Bikman is not a clinician—and, he is not your doctor. Always seek the advice of your own qualified health providers with questions you may have regarding medical conditions.

Hosted on Acast. See acast.com/privacy for more information.

📢 Ask Dr. Bikman’s Digital Mind (multilingual):

https://benbikman.com/ben-bikmans-digital-ai-mind

📢 Dr. Bikman’s Community & Coaching Site: https://insuliniq.com

Note:

Our friends at SiBio CKM are offering a 5% discount using the code BEN5 at checkout. However, their CKM is not yet available in the United States and Canada. It is currently available in selected countries including the UK, Australia, Ireland, the Netherlands, and Germany. You can view the full list of supported countries on their website. Also, you can submit your email on their website and they will notify you when it becomes available in your region: https://www.sibiosensor.com/BEN5

Summary:

Ben explains the four major ways to measure ketones: urine strips, breath analyzers, finger-prick blood meters, and the newer continuous ketone monitor. He begins by reviewing the three ketone bodies produced during fat-based metabolism: acetoacetate, beta-hydroxybutyrate (BHB), and acetone. Each testing method measures a different ketone molecule, which explains why results often do not match across devices.

Urine strips measure acetoacetate, making them inexpensive and useful early in a ketogenic diet, but they become less reliable as the body adapts and uses ketones more efficiently. Breath analyzers measure acetone, offering a reusable and non-invasive option, but they are vulnerable to breathing technique, alcohol, environmental compounds, and imperfect correlation with blood BHB. Blood meters measure BHB directly and remain the practical gold standard for spot-checking nutritional ketosis, but they require finger pricks and costly strips.

The newest tool is the continuous ketone monitor, which measures BHB in interstitial fluid and provides hundreds of readings per day. Dr. Bikman explains that this makes it possible to see trends, overnight patterns, meal responses, supplement effects, and individual variability in a way that spot-check methods cannot capture. The practical takeaway is that continuous ketone monitoring changes the question from “What are my ketones right now?” to “How does my body respond over time?”

References:

For complete show notes and references, we invite you to become an Insider subscriber. You’ll enjoy real-time, livestream Metabolic Classroom access which includes live Q&A with Ben after the lecture, unlimited access to Dr. Bikman’s Digital Mind, ad-free podcast episodes, show notes and references, and Ben’s Weekly Research Review Podcast. Learn more: https://www.benbikman.com

NOTE: The information presented is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Dr. Bikman is not a clinician—and, he is not your doctor. Always seek the advice of your own qualified health providers with questions you may have regarding medical conditions.

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Ben’s favorite yerba mate and fiber: https://ufeelgreat.com/usa/en/c/1BA884

Exogenous ketones: A high-quality option is the NSF-certified goBHB from Clean Form Nutrition, where you can use the code BEN10 for a 10% discount: https://cleanformnutrition.com/products/go-bhb

Ben’s favorite meal-replacement shake: https://gethlth.com (discount: BEN10)

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