In this Metabolic Classroom, Ben explores the fascinating metabolic effects of yerba mate, a traditional South American tea that’s gaining attention in scientific circles. Yerba mate contains a synergistic mix of bioactive compounds, including xanthines (like caffeine), chlorogenic acid, and saponins—all of which contribute to its wide-ranging health benefits. Dr. Bikman explains how this unique brew supports fat loss, improves mitochondrial efficiency, regulates appetite, and enhances insulin sensitivity.

Drawing from human and rodent studies, the lecture highlights yerba mate’s ability to increase fat oxidation, particularly when combined with exercise. It also activates AMPK, a critical energy-regulating enzyme, which promotes glucose uptake and mitochondrial biogenesis. One of the most intriguing effects of yerba mate is its stimulation of GLP-1—both directly through the gut and indirectly by modifying the gut microbiome—making it a natural, non-pharmaceutical way to enhance satiety and insulin regulation.

Dr. Bikman also discusses the underappreciated role of bitter taste receptors in the body—not just on the tongue, but also in fat cells and the gut. Yerba mate interacts with these receptors to influence hormone release (like CCK and PYY) and to promote thermogenesis in brown and beige fat, offering yet another pathway for metabolic support. Finally, he shares unpublished findings from his lab showing yerba mate’s impact on hepatic redox balance, adding to its reputation as a powerful metabolic ally.

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

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In this Metabolic Classroom lecture, Ben explores the concept of anabolic resistance—the body’s reduced ability to build and maintain muscle in response to stimuli like protein intake and resistance training.

This phenomenon, often associated with aging, also affects individuals with obesity or a sedentary lifestyle. Because muscle health is directly tied to longevity, strength, insulin sensitivity, and independence, understanding and reversing anabolic resistance is critical for long-term metabolic health.

Dr. Bikman explains the key drivers of anabolic resistance: reduced anabolic hormone levels, impaired amino acid delivery, inflammation, and cellular changes such as insulin resistance and intramuscular lipid buildup. He emphasizes the central role of the mTOR signaling pathway in muscle protein synthesis, and how factors like age, obesity, and inactivity blunt this response—even when adequate nutrients and exercise are present.

The lecture ends with practical strategies to overcome anabolic resistance, including resistance training, high-leucine animal protein intake, creatine, omega-3s, vitamin D3, and even peptides. Ben stresses that building muscle isn’t just about looking good—it’s about preventing frailty, insulin resistance, and loss of independence. Resistance training is non-negotiable, and diet alone will never be enough to restore optimal muscle health.

Show Notes/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, ad-free podcast episodes, show notes and references, and online, live Office Hours access with Dr Bikman. It also includes Ben’s Research Review Podcast, and a searchable archive that includes all Metabolic Classroom episodes and Research Reviews. Learn more: https://www.benbikman.com

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

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

Ben’s favorite allulose source: https://rxsugar.com (discount: BEN20)

Ben’s favorite health check-up for women: https://choosejoi.co/drben15 (discount: DRBEN15)

Ben’s favorite health check-up for men: https://blokes.co/drben15 (discount: DRBEN15)

Other products Ben likes: https://www.amazon.com/shop/benbikmanphd

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📢 Visit Dr. Bikman’s Community & Coaching Site, Insulin IQ: https://insuliniq.com

and/or

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In this episode of the Metabolic Classroom, Dr. Ben Bikman explores a surprising and controversial dietary trend: the “sugar diet.”

Despite its name, this diet isn’t built around candy and soda. Instead, it promotes a very high intake of simple carbohydrates—primarily from natural sources like fruit, honey, and juices—while restricting both protein and fat to below 10% of total calories. This unusual approach has been gaining popularity, especially among lean, athletic men, some of whom report improved energy, body composition, and insulin sensitivity.

Ben traces the diet's philosophical roots back to the 1930s rice diet used for managing kidney and heart disease, noting how both rely heavily on low-protein, high-carbohydrate intake. He reviews studies in both animals and humans showing that the key metabolic shifts—such as increased mitochondrial uncoupling, fat loss, and improved glucose control—may not be due to the sugar itself, but rather to the restriction of protein. This triggers a spike in FGF21, a liver hormone that enhances energy expenditure and metabolic health.

The lecture also examines the limitations of this approach. Dr. Bikman points out that the diet appears to work only under very specific conditions: in metabolically healthy individuals, especially men, with high physical activity levels. For others, particularly those prone to insulin resistance, food addiction, or poor satiety control, such a high-sugar diet could be problematic. He emphasizes that, as with all dietary interventions, context matters.

Ultimately, this lecture doesn’t promote the sugar diet but uses it as a lens to highlight the underestimated power of protein restriction in driving hormonal and mitochondrial adaptations. Dr. Bikman urges caution and encourages further exploration of how individual physiology responds to dietary extremes.

Show Notes/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, ad-free podcast episodes, show notes and references, and online, live Office Hours access with Dr Bikman. It also includes Ben’s Research Review Podcast, and a searchable archive that includes all Metabolic Classroom episodes and Research Reviews. Learn more: https://www.benbikman.com

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