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Intermittent fasting (IF) is a tool for weight loss and has unique properties that aid many in achieving a caloric deficit. The host, who lost 110 pounds through fasting, emphasizes that while fasting is not magic, it simplifies the process of reducing caloric intake. He highlights the cognitive benefits of fasting, stating it enhances mental clarity and performance. Research suggests that fasting acts as a stressor, promoting adaptations that improve health and longevity, similar to exercise. The host discusses the importance of how and when to break a fast, recommending a protein-rich meal to prevent blood sugar crashes. He also notes that fasting should remain an anomaly to maintain its benefits, advising against daily fasting routines that may lead to adaptation and reduced effectiveness. He addresses the misconception that fasting guarantees a caloric deficit, warning that overeating during feeding windows can lead to a surplus, especially with calorie-dense foods like nuts. The host advocates for varying fasting schedules and emphasizes the hormonal benefits of early time-restricted feeding, as insulin sensitivity is higher in the morning. The conversation touches on the ketogenic diet, which the host uses as a tool for cognitive performance and metabolic flexibility. He acknowledges the downsides of strict diets and stresses the importance of balancing stressors in life, including diet, exercise, and fasting, to avoid negative health impacts. Ultimately, he promotes a flexible approach to eating and fasting, focusing on individual responses and overall well-being.

Eating a whole food or low-carb diet can lead to worse sleep due to lower sodium levels. When sodium is low, the body compensates by increasing adrenaline, which disrupts sleep. To mitigate this, it's recommended to supplement with extra sodium, such as through electrolyte powders or added salt in meals. A hormone called antidiuretic hormone, which helps prevent frequent urination at night, also decreases with low sodium, contributing to sleep disturbances. Processed foods are typically high in sodium, so cutting them out can significantly lower sodium intake. Those who exercise and sweat need to replenish sodium to avoid side effects like poor sleep, headaches, and irritability. Many people mistakenly believe sodium is harmful, but studies show that a whole food, high-sodium diet can be beneficial for healthy individuals. Symptoms of low sodium include weakness, anxiety, and brain fog, often misattributed to low-carb diets. The hosts discuss their personal experiences with sodium and sleep, emphasizing the importance of maintaining adequate sodium levels for overall health and performance. They also highlight the misconception that sodium is inherently bad, pointing out that many studies linking sodium to health issues often involve processed foods and high-calorie diets. In addition to sodium, the conversation touches on the importance of electrolytes for muscle function and overall health. The hosts share anecdotes about their experiences with clients and the noticeable improvements in energy and performance when sodium levels are adequate. The episode concludes with a discussion about personal growth and mentorship, emphasizing the value of surrounding oneself with individuals who inspire and challenge you. The hosts encourage listeners to seek out mentors and learn from those they admire, whether formally or informally, to enhance their personal and professional development.

Peter Attia and Dom D’Agostino explore the science, promise, and caveats of ketosis as a therapeutic and performance strategy. They trace Dom’s trajectory from neuroscience and naval research into the ketogenic space, detailing how high-oxygen environments, hyperbaric oxygen exposure, and redox biology illuminate brain energetics and seizure mechanisms. The conversation moves from foundational ketosis biology—how fasting, carbohydrate restriction, and beta-hydroxybutyrate shift brain fuel and gene regulation—to practical optimization: tracking ketones, proteins, and calories for athletes, the role of ketone esters versus ketone salts, and the need to balance electrolytes to prevent dehydration and dizziness during the transition to ketosis. They emphasize that nutritional ketosis is a metabolic therapy with pleiotropic effects, including neuroprotective signaling and anti-inflammatory potential, rather than a simple weight-loss protocol, and they stress individualized approaches guided by biomarkers and blood work. The discussion then broadens to exogenous ketones as a bridge and tool, addressing pharmacokinetics, enantiomers, and the tradeoffs of different formulations. They compare monoesters, diesters, and salts, explain the D- versus L- beta-hydroxybutyrate dynamics, and reveal how mixing ketones with MCTs or other compounds can modulate absorption, insulin response, and brain energy delivery. Dom candidly shares experimental cautions about liver load, energy toxicity, and the importance of dosing strategies that avoid insulin spikes while maintaining a stable 1–2 millimolar ketone range for cognitive and physical work. The pair also dives into applications for cancer and brain disorders, outlining a framework for glioblastoma and the glucose-ketone index, and they discuss how metabolic therapy could complement standard-of-care options while acknowledging the current absence of definitive randomized trials for many cancers and neurodegenerative diseases. They close with candid reflections on ongoing clinical research, regulatory hurdles, and the hope that metabolic approaches—together with targeted drugs and immune therapies—could meaningfully extend survival and improve quality of life in difficult conditions like GBM and Alzheimer’s disease.

The discussion revolves around the impact of dietary changes, particularly the ketogenic diet, on brain health through four main categories: nutritional deficiencies, inflammation, oxidative stress, and insulin resistance. Nutritional deficiencies can occur even with a nutritious diet due to food choices affecting nutrient absorption. Transitioning to a ketogenic diet can improve nutrient status by reducing the demand for certain nutrients. The ketogenic diet also effectively reduces inflammation, primarily caused by high glucose levels, which leads to the formation of Advanced Glycation End Products (AGEs) that can harm brain function. By stabilizing blood sugar and insulin levels, the ketogenic diet helps mitigate chronic inflammation and oxidative stress, which are detrimental to brain health. The conversation also touches on the importance of monitoring fasting insulin levels, with ideal levels being in the single digits. High fasting insulin levels are common, even among seemingly healthy individuals, indicating insulin resistance. The ketogenic diet can help lower insulin levels, improving metabolic health and potentially reducing the risk of diseases like Alzheimer's. The guests discuss the broader implications of diet on mental health, emphasizing that while the ketogenic diet is beneficial, it may not be suitable for everyone. Alternative dietary strategies, such as lower carbohydrate approaches, can also be effective. The conversation highlights the significance of food quality, particularly the role of animal products, which provide essential nutrients in their bioavailable forms. The discussion shifts to the environmental and health implications of food production practices. The guests express concerns about the integrity of organic labeling, particularly regarding hydroponic produce and confinement animal operations, which may not align with traditional organic principles. They emphasize the need for transparency in food sourcing and the importance of supporting sustainable farming practices that prioritize soil health and animal welfare. Overall, the conversation underscores the interconnectedness of diet, metabolic health, and environmental sustainability, advocating for informed dietary choices and awareness of food production practices to enhance overall health and well-being.

Ketones function by opening escape valves in the body, leading to calorie wastage rather than efficient fat burning, which is key to weight loss. Steven Gundry's book, "Unlocking the Keto Code," presents keto as a longevity strategy, revealing that ketones are not an ideal fuel source. Research shows that while muscles initially prefer ketones during starvation, they soon switch to free fatty acids. Even in full ketosis, only a portion of energy needs are met by ketones, raising questions about their efficiency. The ketogenic diet, originally developed for epilepsy treatment, involves high fat intake and low carbohydrates, but many struggle to maintain it long-term. Gundry highlights that metabolic inflexibility affects many Americans, making it hard to enter ketosis. He shares a case of a patient who gained weight on a ketogenic diet due to insulin resistance, challenging the misconception that keto guarantees weight loss. Gundry emphasizes that a ketogenic diet can lead to inefficient fat burning, likening it to a Ferrari wasting fuel. He advocates for a balanced approach, incorporating fiber-rich and polyphenol-laden foods to support gut health and mitochondrial function. He discusses the importance of postbiotics and the role of gut bacteria in overall health. Ultimately, Gundry suggests a flexible dietary pattern that includes healthy fats, fiber, and polyphenols while avoiding processed foods and excess sugar. He underscores the significance of metabolic flexibility and the benefits of intermittent fasting to enhance ketone production and promote weight loss.

The discussion centers around the importance of sodium intake for individuals on low-carb diets, particularly during the transition to ketosis, which can lead to symptoms known as the "keto flu." The hosts emphasize that low-carb diets can cause the body to lose water and sodium, leading to fatigue, headaches, and muscle cramps. They share personal experiences where increasing sodium intake alleviated symptoms, highlighting that sodium has been unfairly demonized due to its association with processed foods linked to health issues like high blood pressure. The conversation also touches on the misconception that drinking more water alone can resolve dehydration when sodium levels are low. The hosts recount experiences with clients who felt better after increasing their sodium intake, particularly during workouts. They discuss the benefits of sodium for athletes, noting that it can enhance performance significantly. The hosts reflect on their upbringing, where the only advice regarding salt was in extreme conditions, and how this has led to a lack of understanding about the broader benefits of sodium in training and hydration. They share anecdotes about clients who experienced improved performance and well-being after adjusting their sodium intake. The discussion shifts to parenting and the challenges of managing children's technology use. The hosts share their philosophies on screen time, acknowledging the difficulties of enforcing limits while balancing work and family life. They express empathy for parents who struggle to maintain boundaries with technology, especially with young children and teenagers. The conversation also delves into the importance of instilling a strong moral foundation in children, discussing the role of religious practices in providing structure and values. They argue that without a guiding framework, children may adopt harmful ideologies. The hosts emphasize the need for parents to actively engage in their children's lives and provide positive influences. Finally, they address a caller's questions about fitness and nutrition, emphasizing the importance of gradual changes and focusing on protein intake. They recommend starting with foundational workouts and using mobility exercises to enhance performance. The hosts encourage the caller to maintain a balanced approach to fitness and nutrition, highlighting the significance of small, sustainable changes for long-term success.

Tim Ferriss and David Baszucki (CEO of Roblox) discuss Baszucki's personal journey with his son's severe bipolar disorder, which spanned eight years, multiple hospitalizations, and numerous medications without significant improvement. A turning point came with the discovery of metabolic psychiatry and the implementation of a strict ketogenic diet, which led to remarkable progress within weeks. Baszucki recounts a harrowing incident where his manic son went missing, highlighting the extreme challenges faced by families dealing with severe mental illness. The conversation delves into the scientific basis of ketogenic diets, explaining how the body shifts from burning glucose to ketones for energy, providing a more consistent and clear energy source for the brain. This metabolic shift is posited as a potential solution for conditions linked to brain energy deficits, such as bipolar disorder, epilepsy, Alzheimer's (referred to as type 3 diabetes), and even cognitive symptoms of Lyme disease and OCD. Both hosts share personal experiences with ketosis, noting benefits like improved mental clarity, reduced need for sleep, enhanced breath-hold times, and a calmer, more optimistic outlook, emphasizing the importance of physiological interventions alongside traditional talk therapy. The discussion then transitions to Roblox, its genesis, and its vision for the future. Baszucki describes Roblox as a 3D gaming and communication platform with 120 million daily users, where all content is created by its community, ranging from hobbyists to professional teams earning millions. He highlights the platform's core mission to connect a billion users with optimism and civility, emphasizing its unique approach to safety for all ages, including young children, through filtered communication and strict monitoring. A pivotal business decision for Roblox was the early implementation of a digital economy using "Robux," which allowed creators to monetize their content and fostered a thriving ecosystem, directly correlating user engagement with revenue. Baszucki stresses the company's philosophy of prioritizing creator revenue and user engagement over maximizing short-term profits, viewing it as a long-term strategy for growth and community building. Looking ahead, Baszucki envisions Roblox evolving into a platform for virtual 3D work, music concerts, and even political rallies, moving beyond video calls to more immersive, real-time 3D interactions. He discusses the role of artificial intelligence in enhancing safety (e.g., age estimation, content filtering) and enabling future content creation, including procedurally generated real-time worlds. Both agree on the inevitability of many technological advancements, drawing parallels to past sci-fi predictions that have become reality. Baszucki also shares aspects of his personal self-care routine, which includes daily movement, sun exposure, very low alcohol intake, moderate ketosis, and consistent exercise like CrossFit and hiking. He advocates for continuous glucose monitors (CGMs) and continuous ketone monitors (CKMs) for metabolic health, noting Roblox provides CGMs to employees and labels snacks based on 'whole food' and 'good energy' axes, leading to significant positive health changes among staff. The conversation concludes with a reflection on the importance of 'feeding your head' through both physical and mental well-being.

Many negative effects associated with low-carb diets, such as low energy and headaches, are often due to low sodium intake rather than the diet itself. Increasing sodium can alleviate these symptoms. The hosts discuss personal experiences with low-carb diets and the importance of hydration and sodium, especially when using GLP-1 medications that reduce appetite and thirst signals. They emphasize that low-carb diets can lead to rapid water loss, which also depletes sodium, causing fatigue and brain fog. The concept of "keto flu" is mentioned, where individuals feel poorly during the initial phase of a low-carb diet due to sodium loss. The hosts suggest that anyone transitioning to a low-carb or unprocessed food diet should consider increasing their sodium intake to improve overall well-being. They share anecdotes about the positive effects of sodium on migraines and hydration, highlighting that many people experience significant improvements in how they feel after adjusting their sodium levels. The conversation shifts to a giveaway for a fitness program and a discussion about how interests that were once considered "uncool" in childhood, like reading or playing instruments, can become valued in adulthood. The hosts reflect on cultural shifts regarding hobbies and interests, including the resurgence of games like Dungeons and Dragons, which have gained popularity through media like "Stranger Things." The hosts also discuss their experiences with parenting, sharing humorous anecdotes about their children and the challenges of balancing discipline and encouragement. They touch on the importance of allowing children to take risks while ensuring their safety. In a segment about mental health, they explore the relationship between spiritual health and mental illness, discussing how a lack of spiritual practice may contribute to issues like anxiety and depression. They reference studies suggesting that individuals with spiritual practices tend to have lower rates of mental health issues. The episode concludes with a caller asking about shoulder workouts and the headaches that follow. The hosts provide advice on correcting shoulder mechanics and suggest focusing on scapular mobility exercises to alleviate tension and improve overall shoulder function. They emphasize the importance of proper form and the role of a good trainer in helping individuals achieve their fitness goals.

In this episode of The Diary of a CEO, Steven Bartlett welcomes Benjamin Bikman, a leading metabolic scientist, to dissect how insulin orchestrates weight gain and how carbohydrate restriction and ketosis can reshape energy balance. The guest dispels the oversimplified “eat less, move more” paradigm, arguing that insulin’s role in energy storage is the pivotal lever for fat loss. He explains that two variables drive fat loss: shrinking fat cells and lowering insulin by reducing carbohydrate intake. The discussion traverses how insulin spikes suppress the brain’s access to energy from glucose and ketones, triggering hunger even when fat stores are plentiful. Bikman emphasizes that fat loss should come from protocols that minimize hunger and energy scarcity, highlighting that meals with the same calorie count but different macronutrient compositions yield different metabolic rates due to insulin’s regulation of energy use. He connects ketosis not only to fat burning but to diverse brain benefits, including reduced anxiety and improved attention, and shares how ketones serve as both fuel and signaling molecules that influence blood vessel dilation and brain chemistry. The conversation moves from practical diet design—structured indulgences around carb-rich holidays, prioritizing protein and fat to keep insulin low, and leveraging exogenous ketones during transitions—to the nuance of insulin’s supremacy in fat metabolism, illustrated with clinical anecdotes about type 1 diabetes and insulinoma to underscore how insulin control shapes outcomes. The host and guest explore the potential of breastfeeding-like clarity in patient education while acknowledging the complexities of real-world adherence, social media scrutiny, and evolving scientific discourse. Bikman also delves into the therapeutic potential of ketones for neurological and cardiovascular health, the role of exogenous ketones in preserving lean mass during weight loss, and the possibility of using GLP-1 therapies in a cycle with low-carb coaching to sustain long-term changes. They close with practical daily frameworks, including fasting, big lunch planning, regular resistance training, sleep optimization, and the impact of stress and testosterone on metabolic health, offering a holistic blueprint for listeners seeking a healthier 2026.

In this episode of The Diary of a CEO, Steven Bartlett chats with Dr. Benjamin Bikman about the science of weight, metabolism, and the practical strategies that can help people lose fat without feeling constantly hungry. The conversation centers on insulin as a master regulator of energy storage, arguing that the traditional calories-in, calories-out mindset oversimplifies the body’s complex hormonal control of weight. Bikman argues that lowering insulin through reduced carbohydrate intake shifts the body toward burning fat and producing ketones, which become a steady brain fuel and a signal that can modulate hunger, mood, and cognitive performance. He emphasizes that sustainable fat loss hinges on two variables: shrinking fat cells and managing insulin, rather than merely cutting calories. The discussion covers real-world implications, including how to structure meals, harness ketosis, and deploy exogenous ketones to ease the transition. In addressing common concerns, Bikman addresses the sustainability of ketogenic eating, the brain’s reliance on ketones, and the potential cognitive and mood benefits of stabilizing energy sources. He explains how ketones act as both fuel and signaling molecules that improve brain energy, mood, and even blood vessel function, which can have downstream effects on blood pressure and cognitive health. The dialogue also examines individual differences, such as sex hormones and the luteal phase in women, and how these nuances affect fat burning, cravings, and insulin sensitivity. The host and guest discuss practical routines—fasting windows, protein- and fat-forward meals, resistance training, and even supplements like omega-3s, creatine, and collagen—that can support weight management without imposing harsh hunger. They also explore the role of wearables and CGMs in providing actionable feedback, the potential dangers of insulinoma and the limits of GLP-1–based therapies, and the need to approach medical claims with humility and scientific scrutiny. The episode ultimately blends rigorous metabolic science with candid, personal storytelling about health goals, family life, and longevity. It underlines the value of having a strong why and a realistic plan that minimizes hunger while optimizing insulin dynamics, ketone production, and energy throughout the day. The rich discussion invites listeners to rethink weight loss strategies, consider individualized nutrient timing, and leverage emerging tools and lifestyle choices to pursue a healthier 2026 without relying solely on restrictive dieting or one-size-fits-all prescriptions.

Visceral fat is not merely about looks; it’s a gateway to inflammation, insulin resistance, and heart disease, and a growing medical approach centers on fasting as the fastest route to shed it. A world-leading cardiologist with decades of experience explains how repeated carb intake keeps insulin high, promotes visceral fat, and fuels artery disease. He emphasizes that after about 12 hours of fasting, the body begins pulling stored fat from the belly first, a process he uses to reverse metabolic derangements. The conversation then shifts to how modern living disrupts fasting physiology, contributing to a cascade of inflammatory signals, fatty liver, and a skewed lipid profile that can culminate in heart attacks even in younger patients. He maps a chain from gut health to heart disease, highlighting how insulin-driven visceral fat and ectopic fat around organs inflame blood vessels. A key diagnostic thread is insulin testing, because many patients exhibit high insulin with normal glucose, a sign of insulin resistance that predates diabetes and accelerates cardiovascular risk. Fasting emerges as a powerful instrument: from 12-hour fasts to 18:6 schedules, with more aggressive regimens for those with diabetes or obesity, such as weekly 48-hour fasts or occasional three-day water fasts, followed by one meal a day. He also notes that ketosis and autophagy make cells more efficient, produce ketones as fuel, and can boost brain function and growth hormone, while the body cycles between fed and fasted states to preserve muscle when properly managed. The discussion then turns to the gut as the main driver of cardiovascular inflammation. A disrupted microbiome, leaky gut, and mold exposure are described as contributors to fatty liver and coronary plaque, with the liver and gut coordinates measured by inflammatory markers and coronary calcium scoring. Rebalancing the microbiome—through high-fiber diets, fermented foods, and specific prebiotic supplements—can dampen systemic inflammation and slow plaque progression. He advocates vitamin D3 and K2 to optimize calcium handling, cautions against routine calcium supplements, and endorses omega-3s and nattokinase to modulate clotting. Beyond diet, he explains vagus nerve hacks—breathing exercises, cold exposure, humming, and even eye movements—that enhance parasympathetic activity, improve heart rate variability, and support gut-brain communication. He stresses that sleep and stress management are essential for gut health and heart protection.

The episode delves into ketosis as a tool for weight loss, mood stabilization, cognition, and potential neuroprotection, with Dr. Dom D’Agostino offering a practical, experience-based tour of how ketogenic fasting regimens influence brain chemistry and systemic metabolism. The conversation begins by outlining how ketosis shifts energy substrate use from glucose to fat-derived ketones, highlighting the diuretic and natriuretic effects that can lower blood pressure and fluid volume while reducing insulin resistance. The hosts discuss the brain’s response to ketones, including elevated GABA, dampened glutamate activity, and a resulting calming effect that underpins mood stabilization and seizure control. The discussion broadens to therapeutic contexts, including metabolic psychiatry and cancer care, where ketosis may slow glycolysis-tethered tumor growth and improve treatment responses. The speakers emphasize that ketosis is not a cure but a metabolic modulator with widespread effects—from anti-inflammatory actions to immune modulation and potential benefits for neurodegenerative risk factors. They also explore how intermittent fasting and metabolic memory may create lasting improvements in mitochondrial function, insulin sensitivity, and fat oxidation, suggesting a persistent “metabolic memory” that can persist beyond active dietary change. Throughout, the hosts address practicalities of following a ketogenic lifestyle: meal composition, macro balance, and strategies to minimize gluconeogenesis while preserving muscle. They discuss exogenous ketones, including monoesters and diesters, weighing palatability, pharmacokinetics, toxicity, and the risks of chronic high-dose use, particularly with 1,3-butanediol-based formulations. Close attention is paid to real-world monitoring tools such as CGMs and ketone meters, plus the importance of fiber, fat, and electrolyte management to sustain ketosis during meals. The broader message is that ketogenic strategies—when thoughtfully applied and personalized—can be powerful tools in improving brain function, mood, and longevity, albeit with careful consideration of dosage, timing, and individual physiology.

A ketogenic diet, a very low carbohydrate diet, has been used for nearly a century to treat epilepsy and is being studied for its potential benefits in Alzheimer's disease. The brain typically uses glucose for energy, but during fasting, it can utilize ketones from fat. While the ketogenic diet may help those with neurological conditions, there is no strong evidence linking it to longevity or optimal aging. It can be a therapeutic option for managing Alzheimer's, but a nutrient-dense diet is recommended for overall health.

Joe Rogan welcomes Dom D'Agostino to the podcast, discussing various aspects of the ketogenic diet. D'Agostino shares insights on a specific wine that can be consumed while maintaining ketosis, explaining that certain dry wines have low glycemic impact, allowing for moderate consumption without disrupting ketosis. He emphasizes the ketogenic diet's origins in treating pediatric epilepsy and its expanding applications, including conditions like polycystic ovary syndrome, acne, and genetic disorders such as Angelman syndrome. D'Agostino explains the science behind the ketogenic diet, which shifts the body's fuel source from carbohydrates to fats and ketones, a process that dates back to ancient practices of fasting. He discusses the physiological effects of fasting and ketosis, including enhanced brain energy production and resilience, particularly in extreme conditions. The conversation touches on the benefits of the ketogenic diet for various health issues, including its potential role in managing cancer and improving cognitive function. The discussion also highlights the importance of proper macronutrient ratios in the ketogenic diet and the challenges faced by those trying to adhere to it, particularly athletes. D'Agostino notes that while some athletes may struggle with performance on a strict ketogenic diet, others can adapt successfully with careful management of their carbohydrate intake. D'Agostino mentions ongoing research into the ketogenic diet's effects on migraines and wound healing, noting that ketones may have anti-inflammatory properties that aid in recovery. He emphasizes the need for further studies to validate the benefits of the ketogenic diet across various health conditions. The podcast concludes with D'Agostino sharing resources for those interested in the ketogenic diet, including websites and organizations dedicated to educating the public about its benefits. He encourages listeners to explore the ketogenic diet as a potential tool for improving health and managing various medical conditions.

Switching up diet and lifestyle can create stress on the microbiome, leading to adaptation and change. Key foods and supplements for brain optimization include omega-3s, particularly from fish, and healthy fats, as the brain is primarily composed of fats. Latt Mansor shares his experience with LDL levels while on a low-carb diet, noting that metabolic health can exist despite high LDL. He emphasizes that LDL is correlated with inflammation rather than being a direct cause of heart issues. Good cardiovascular health is crucial for brain health, and Mansor's background in cardiovascular disease informs his interest in ketones. He discusses the potential of exogenous ketones in managing chronic diseases, including heart failure, and their role in energy metabolism. Different types of exogenous ketones, such as MCTs, ketone salts, and ketone esters, have varying benefits and drawbacks. Mansor highlights the importance of a strong foundational diet and lifestyle, suggesting that ketones can supplement dietary changes. He also addresses the complexities of insulin resistance and the multifactorial nature of metabolic health, advocating for personalized approaches to diet and exercise.

The conversation between Max Lugavere and Dominic D’Agostino centers on the ketogenic diet and its profound effects on metabolic physiology and brain health. D’Agostino emphasizes that the ketogenic diet operates independently of calorie counts, significantly altering brain energy metabolism. He discusses his research on the diet's application for conditions like epilepsy and Alzheimer's disease, highlighting its potential to stabilize neurotransmission and improve cognitive function. D’Agostino shares insights from his work with NASA and underwater missions, noting how high CO2 levels in space can impair mitochondrial function and overall health. He also mentions the importance of continuous glucose monitoring in understanding metabolic responses and managing cravings, particularly for those with eating disorders. The discussion touches on the role of ketones in neuroprotection, particularly in the context of hypoglycemia, and the potential for ketogenic therapies to address various mental health disorders, including bipolar disorder and schizophrenia. D’Agostino notes the need for clinical trials to validate these findings and mentions the challenges of sustaining a strict ketogenic diet. He advocates for a modified Mediterranean ketogenic diet that includes fiber and phytonutrients, arguing that this approach can optimize metabolic health while still providing the benefits of ketosis. The conversation concludes with a focus on the importance of functional biomarkers over traditional lipid measurements in assessing health outcomes.

Tim Ferriss introduces the episode featuring Dr. Dominic D'Agostino, an expert in ketosis and metabolic therapies. Ferriss shares his enthusiasm for gymnasticbodies.com, a bodyweight training system that has improved his flexibility and strength. He also discusses Four Sigmatic's mushroom coffee, which combines chaga and lion's mane mushrooms for cognitive enhancement with lower caffeine levels than regular coffee. D'Agostino addresses the skepticism surrounding the ketogenic diet among dietitians and researchers, attributing it to a lack of education and outdated beliefs about saturated fats. He emphasizes the ketogenic diet's effectiveness for managing type 2 diabetes and its potential for other health benefits, including cancer therapy. He notes that many dietitians find it challenging to implement due to compliance issues and the stigma surrounding high-fat diets. D'Agostino discusses protein intake on a ketogenic diet, recommending 1 to 1.5 grams per kilogram of body weight to maintain ketosis. He highlights the experiences of a type 1 diabetic student in his lab who found significant improvements in blood glucose control and insulin sensitivity while on a ketogenic diet. The conversation shifts to the impact of ketosis on exercise performance, particularly at altitude, where D'Agostino suggests that ketones may enhance energy production and mitigate altitude-related issues. He also addresses the unique considerations for women on a ketogenic diet, recommending a gradual transition and sufficient caloric intake to avoid hormonal disruptions. D'Agostino explains the relationship between the ketogenic diet and gut microbiota, suggesting that dietary changes can shift gut bacteria towards those that thrive on fat. He emphasizes the importance of maintaining a diverse diet to support gut health. The episode concludes with a discussion on exogenous ketones, their safety, and efficacy, particularly in non-ketogenic contexts. D'Agostino shares insights on various products and their formulations, advocating for further research into the benefits of ketones in metabolic therapies.