How can ketosis help with Lyme disease and its symptoms?

Ketosis targets the energy systems of the glycolytic Borrelia spirochete responsible for Lyme disease by limiting glucose availability. Additionally, elevated beta-hydroxybutyrate (BHB) stimulates the adaptive immune response, helping the body neutralize foreign invaders and manage the inflammatory process associated with Lyme.

Can a ketogenic diet help with cancer treatment?

Yes, a ketogenic diet can be beneficial for cancer patients, especially those who are overweight. It can slow tumor growth, particularly for highly glycolytic cancers (about 80%), and enhances the response to standard cancer therapies like radiation, chemo, and immune-based treatments. It's not a cure but a supportive therapy.

How does ketosis promote metabolic memory and long-term health benefits?

Ketosis promotes metabolic flexibility and increases fatty acid oxidation enzymes, akin to 'muscle memory' for metabolism. It enhances mitochondrial function and capacity. Regular periods of ketosis can lead to enduring protective effects for metabolic and brain health, even after the diet is paused.

Why do my ketone readings seem low even when I feel like I'm in ketosis?

If you have high insulin sensitivity and metabolic fitness, your body might be utilizing ketones very efficiently, especially in a caloric deficit. This means that while your body is producing ketones, it's also rapidly consuming them, leading to lower blood readings. Breath ketones (acetone) might be a more accurate indicator in such cases.

How does protein intake and gluconeogenesis affect ketosis?

Rapid absorption of protein, especially from liquid sources like whey, can trigger an insulin response and shut off ketosis via gluconeogenesis. However, consuming protein with fat, fiber, and salt can delay gastric absorption, buffering this response and allowing higher protein intake without disrupting ketosis.

Is dietary fat essential for a ketogenic diet, or can body fat supply enough?

While your body can utilize stored fat, dietary fat is crucial to 'coax' your body into consistently using fat as its primary fuel. Short periods of lower dietary fat with higher protein and veggies can stimulate fat mobilization, but indefinitely restricting dietary fat can make it harder to sustain deep ketosis and may lead to anti-ketogenic effects from high protein boluses.

Can a ketogenic diet help prevent or delay neurodegenerative diseases like Alzheimer's?

Improving metabolic health (lower insulin, inflammation, optimized glucose, omega-3 ratios, B12, magnesium) is tightly linked to brain health and can dramatically delay the onset of Alzheimer's. The ketogenic diet impacts these biomarkers positively, suggesting a strong protective role, though definitive long-term human studies are still emerging.

What is the recommended Glucose Ketone Index (GKI) for therapeutic ketosis?

For therapeutic ketosis, the sweet spot is generally a GKI between 1 and 2. However, some research suggests that a GKI of 1 to 4 is also demonstrably therapeutic across various conditions, including cancer and seizures, making it a more achievable target for many.

What are the potential downsides or toxicity concerns with exogenous ketones?

Some ketone formulations, particularly those containing 1,3-butanediol, can have toxicity when used chronically, potentially depleting NAD+ and ATP, and causing liver inflammation or fatty liver changes. These compounds can also produce narcotic effects, dependence, and withdrawal symptoms, especially problematic for older populations.

What is a safe recommended daily intake for MCT oil?

Studies showing benefits used around 20 milliliters per day. It is generally recommended to cap MCT consumption at 20 milliliters twice per day for most people who can tolerate it. Large doses (e.g., 80-100 ml/day human equivalent) have been linked to fatty liver and inflammatory markers.

Does taking exogenous ketones prevent your body from producing its own ketones?

This 'anti-endogenous ketosis' effect has primarily been observed with 1,3-butanediol based ketone esters due to their potency and rapid elevation of ketones, which can cause an insulin spike that then suppresses natural ketone production. Ketone salts tend not to have this effect.

What are good fiber sources to incorporate into a ketogenic diet?

Recommended whole-food fiber sources include broccoli (especially florets), wild blueberries (which have less sugar and more fiber than cultivated ones), apples (rich in pectin), and walnuts. These can provide beneficial fiber and phytonutrients without significantly impacting ketosis if consumed in moderation, especially later in the day.

How to Use Ketosis for Enhanced Mood, Cognition, and Long-Term Brain Protection — Dr. Dom D'Agostino

Tim Ferriss

Howto & Style4 min read132 min video

Jan 7, 2026|30,023 views|643|84

tim ferriss 4 hour workweek 4 hour body 4 hour chef timothy ferriss tim ferriss blog timothy ferriss speaker Tim Ferriss Podcast the tim ferriss show ketosis dom dagostino lyme disease

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Key Moments

TL;DR

Ketosis offers mood, cognitive, and brain protection benefits, aiding weight loss and metabolic health.

Key Insights

Ketosis can significantly improve mood, cognition, and offer long-term brain protection by stabilizing neurotransmitters.

Weight loss is a primary benefit of ketosis, partly due to fluid and sodium loss, which can lower blood pressure.

Ketogenic diets can be beneficial for metabolic psychiatry conditions such as depression, anxiety, and schizophrenia.

Ketosis targets the energy systems of certain microbes, like those causing Lyme disease, and augments the immune response.

Metabolic memory suggests that the body retains benefits from periods of ketosis, making subsequent periods easier and more effective.

Monitoring ketone levels can be complex, as high utilization in metabolically fit individuals may lead to lower readings.

Exogenous ketones offer potential benefits but require careful consideration of formulation, toxicity (especially 1,3-butanediol), and individual response.

THE FOUNDATION OF KETOSIS AND ITS BROAD APPLICATIONS

Ketosis, a metabolic state where the body burns fat for fuel, is presented as having numerous benefits, akin to fasting but without the same metabolic drawbacks like muscle loss. Key applications include weight loss, achieved through reduced insulin levels and a shift to fat metabolism. It also offers significant cognitive and psychiatric advantages by influencing brain neurochemistry, such as lowering glutamate and elevating GABA, which can calm the brain. This makes it a promising area for metabolic psychiatry, addressing conditions from depression to anxiety disorders.

TACKLING ILLNESS AND INFLAMMATION WITH KETOGENIC DIETS

Beyond general well-being, ketogenic diets show potential in addressing specific health challenges. Tim Ferriss shares a personal account of recovery from debilitating Lyme disease symptoms, including cognitive impairment and joint pain, after adopting a strict ketogenic diet. Dr. D'Agostino explains that ketosis may target microbes like the one causing Lyme disease by limiting their glucose supply and enhances the adaptive immune response, aiding the body in combating pathogens. This approach is also being explored for inflammatory conditions and even as an adjunct therapy for certain cancers, where it can slow tumor growth and augment treatment effectiveness.

METABOLIC MEMORY AND THE DURABILITY OF KETOGENIC BENEFITS

A fascinating concept discussed is 'metabolic memory,' where the body retains adaptations from periods of ketosis. This means that engaging in ketogenic diets or fasting periodically can create lasting improvements, making future efforts more efficient and beneficial. Similar to muscle memory, the body becomes better at utilizing fat for energy with repeated exposure. This phenomenon suggests that even short, strategic periods of ketosis, potentially combined with intermittent fasting, can offer enduring protective effects for brain health and overall metabolic function.

PRACTICAL IMPLEMENTATION AND MONITORING CHALLENGES

Implementing a ketogenic diet involves practical considerations, such as managing macronutrient intake (low carb, moderate protein, high fat) and understanding the role of intermittent fasting. Monitoring ketosis, often done through blood or breath tests, can present challenges. Dr. D'Agostino explains that highly metabolically fit individuals may have lower ketone readings due to efficient utilization, leading to potential 'false negatives.' This highlights the importance of subjective well-being and other physiological markers alongside numerical data, emphasizing that a personalized approach is crucial.

PROTECTING THE BRAIN: NEURODEGENERATIVE DISEASE AND LONGEVITY

The conversation delves into the potential of ketogenic diets for preventing or delaying neurodegenerative diseases like Alzheimer's. By optimizing cardiovascular and metabolic health—reducing inflammation, improving insulin sensitivity, and ensuring adequate nutrient intake—ketosis may offer a protective mechanism for the brain. Establishing a baseline of metabolic health, including monitoring biomarkers like high-sensitivity C-reactive protein (hs-CRP) and Omega-3/Omega-6 ratios, is crucial. Regular exercise and maintaining muscle mass are also presented as key components for synergistic brain and body health, contributing to longevity.

EXOGENOUS KETONES: BENEFITS, RISKS, AND FORMULATIONS

Exogenous ketones, supplements taken for external ketone raise, are discussed with a focus on their benefits and potential drawbacks. Key considerations include palatability, tolerability, pharmacokinetic profile (how the body processes them), and toxicity. Certain formulations, particularly those containing 1,3-butanediol, raise concerns about liver toxicity with chronic use, especially in older populations. The conversation highlights the importance of formulation and suggests that a balanced approach, potentially combining supplements with MCT oil or consuming them with meals, might mitigate risks and optimize benefits, while also emphasizing a preference for non-1,3-butanediol based formulations.

DIETARY STRATEGIES: FIBER INTAKE AND FAT CONSUMPTION

Maintaining a well-formulated diet is essential, even within ketosis. Dr. D'Agostino emphasizes the importance of fiber from sources like broccoli, wild blueberries, and apples to aid digestion and manage metabolic health. He shares his personal approach, consuming around 60-70 grams of carbohydrates daily with a significant portion being fiber, which he finds does not disrupt his ketosis. This approach can be sustained by the body's efficient fat utilization, particularly when combined with intermittent fasting and adequate protein intake, allowing for metabolic flexibility and enjoyment of a wider range of foods.

Mentioned in This Episode

●Supplements

●Products

●Software & Apps

●Tools

●Companies

●Organizations

●Books

●Studies Cited

●Concepts

●People Referenced

Ketone Ester Formulations and 1,3-Butanediol Content

Data extracted from this episode

Product	1,3-Butanediol Content
Ketone Monoester (BHB bound to 1,3-Butanediol)	51%
Ketone Diester (1,3-Butanediol with two ketones)	35%

Common Questions

A ketogenic diet offers numerous benefits including weight loss, improved insulin sensitivity, reduced blood pressure, and a calming effect on the brain by elevating GABA and lowering glutamate. It mimics the benefits of fasting without muscle loss or fatigue.

Topics

Lyme Disease MCT Oil 1,3-butanediol GHB GKI

Mentioned in this video

softwareClinicalTrials.gov

A database where 160 or more registered clinical trials on exogenous ketones can be found.

toolDexcom G7 Continuous Glucose Monitor (CGM)

A device used to track glucose levels, noted for being calibratable.

supplementLetrozole (Letol)

An estrogen blocker used for breast cancer treatment, poorly tolerated by most women from a cognitive perspective.

toolNIH toolbox

A set of cognitive tests used in research to objectively measure brain function.

organizationBazooki Group

A group largely funding research into the rapidly expanding application of ketosis for metabolic psychiatry.

conceptKetosis

A metabolic state where the body burns fat for fuel, producing ketones, leading to benefits like weight loss, reduced insulin resistance, and mood stabilization.

organizationSociety for Integrative Metabolic Oncology (SIMO)

A group within the cancer community discussing the Glucose Ketone Index (GKI) in relation to cancer therapy.

studyNASA Nemo experiments

Experiments conducted in extreme environments to assess cognitive function, reaction time, and decision-making for astronauts, applying to brain training.

productSeason's (Mackerel)

A good brand of mackerel for ketogenic diets.

supplementRapatha

A medication for cholesterol management that Tim Ferriss uses.

supplementKeto-Start

A ketone salt-based product with exogenous ketones, used by Dom D'Agostino as part of his daily protocol to maintain ketosis.

personDeanna Tadon

A patient diagnosed with ALS who was given three years to live but has been stabilized since prior to 2010; mentioned in the context of tick-borne diseases.

productKing Oscar (Mackerel)

A slightly pricier brand of mackerel also recommended for ketogenic diets.

personBen Bikman

Author of a book and host of podcasts focusing on insulin resistance and how low-carb ketogenic diets can reverse it.

supplementD-beta-hydroxybutyrate (BHB)

The active form of ketone measured by devices like Keto Mojo; L-BHB takes longer to metabolize and is not picked up by some devices.

supplementKetone Diester

A type of exogenous ketone containing 1,3-butanediol with two ketones, noted for potentially causing intestinal discomfort.

companyQuest Nutrition

A company that previously attempted to create whole-food ketogenic meals but phased them out.

personMark Matson

Researcher who has done a lot of work related to intermittent fasting, emphasizing the importance of a 16-hour calorie-free fast to deplete liver glycogen and induce metabolic switching.

toolSimbio (Continuous Ketone Monitor)

A continuous ketone monitor worn by Tim Ferriss, which measures interstitial ketones and has a known limitation of tapering sensitivity after the first week.

toolKeto Mojo

A finger prick device that measures beta-hydroxybutyrate (BHB) ketone levels and glucose, and can directly display the Glucose Ketone Index (GKI).

softwareJogle (Brain Training App)

A brain training app used in NIH-funded research at the University of South Florida for objective cognitive function assessment.

conceptCyclical Ketogenic Diet

A diet Tim Ferriss experimented with in the 90s for mood stabilization and leaning out, involving periods of strict keto followed by carbohydrate re-feeding.

supplementKetone Monoester

A type of exogenous ketone where 1,3-butanediol is bound to BHB; can cause rapid ketone spikes, subsequent insulin release, and potential 'hypoketotic and hypoglycemic' effects.

personThomas Seyfried

A researcher who is very adamant about achieving a GKI of 1 to 2 for therapeutic ketosis, particularly in cancer.

personDr. Annette Bosworth (Dr. Boz)

Credited for amplifying the message of sardine fasting and keto benefits through her large YouTube following and other podcasts.

productChicken of the Sea (Mackerel)

An inexpensive brand of chub mackerel recommended for its high omega-3 content and low heavy metals, ideal for a budget-friendly ketogenic diet.

toolPrecision Xtra from Abbott

A meter that measures ketone levels via finger prick, possibly giving slightly different readings than continuous monitors.

conceptLDL (Low-Density Lipoprotein)

A type of cholesterol, mentioned in comparison to HSCRP, with HSCRP being considered more atherogenic than LDL.

companyMedi-Foods

A company making prescription-level, gourmet, whole-food ketogenic diet meals that fit specific macros and feature compostable packaging.

supplementNexletol (Bempedoic Acid)

A medication for cholesterol management that Tim Ferriss has been taking, potentially redundant with Rapatha.

supplementL-beta-hydroxybutyrate (L-BHB)

The L-enantiomer of BHB, which takes about four to five times longer to metabolize than D-BHB, remains in circulation longer, and serves functions impacting cardiac output and vascular resistance in the brain and heart.

supplementN-Acetyl Cysteine (NAC)

A supplement taken to support liver health, particularly when consuming substances that might impact liver enzymes.

studyUniversity of Pennsylvania

diseaseLyme disease

studyAPOE3

supplementGABA (Gamma-Aminobutyric Acid)