Amber O'Hearn and Dave Feldman have a brief 5 hour chat on nutrition and debates [Interview]
> can nutrition debates be clarified by better language? Amber O’Hearn, independent researcher and writer with a math/computer science background, makes the case across privacy tech, computational linguistics, low-carb history, carnivore nutrition, vitamin C, ketones, LDL, and the tension between anecdotes, mechanisms, and prospective data.
::: spoiler summerizer
Core thesis and wording
- Meat has nutrients as well as protein, and vegetables having nutrients does not make plants uniquely necessary for every person.
- Vitamin C need depends on metabolic condition, dietary pattern, scurvy prevention, antioxidant aims, and spare factors from meat; a plant-free person with good health is not automatically harmed by less vitamin C intake.
- Low measured ketones in keto-adapted people are not automatically proof of better ketone efficiency; when ketones are not high enough for the brain, glucose has to rise.
- Precision matters because association language can slide into causal language; red meat can be linked with cancer in observational data without proving a causal chain from meat to cancer.
- The word overeating can become circular when it only means eating followed by weight gain; that wording hides the actual mechanism behind weight gain.
- Calories-in/calories-out is bookkeeping and thermodynamics, not a causal mechanism; weight loss means more energy left than came in, but it does not prove intentional restriction caused the loss.
- The useful nutrition dispute is why someone ate less or more and why someone moved less or more, not only whether energy balance arithmetic closed.
Amber’s background
- Amber spends her time on family, reading, writing, metabolic topics, neuroscience, evolution, tango, bridge, and synthesis across fields.
- Her mathematics and computer-science background led into cryptography and the cypherpunk idea that technology can protect freedom and privacy where law alone is incomplete.
- Bitcoin solved decentralization through public verification, but its open ledger makes transactions viewable once an address is tied to a person or business.
- Zcash keeps Bitcoin-like decentralization while adding a zero-knowledge proof layer that can verify valid transactions without revealing their contents.
- Language, mathematics, cognition, and computational linguistics overlap for Amber because all of them involve abstractions central to human thinking and modern AI models.
- Russian and French are part of her language background, and the Russia period later became a turning point in her diet history.
Evidence, experiments, and population data
- Protein Power gave Amber a low-carb entry point and a citation trail that led her into medical papers, experimental nutrition, and low-carb practice.
- Randomized experiments are stronger for causality because they isolate a variable; epidemiology is useful for hypotheses and for weakening large-effect causal stories.
- Healthy-user bias bundles official health advice, health motivation, non-smoking, exercise, and food choices, so one observed habit can carry many hidden behaviors.
- Nutrition datasets can miss the most important contrast; fiber data in grain-eating populations cannot answer what happens with no fiber and no grains.
- Observational populations with high carbohydrate intake and low diabetes rates weaken the simple idea that carbohydrate itself causes diabetes.
- Carbohydrate restriction can be useful once diabetes exists without proving carbohydrate was the original cause of the disease.
Early diet history and low carb
- Charles Washington’s phrase "the lucky ones get fat" meant visible weight gain can push people to fix inputs that might otherwise create hidden disease later.
- Amber grew up in a mostly vegetarian household for ethical reasons, and 1990s diet culture made vegetarian, low-fat, and vegan paths feel obvious for weight loss.
- Meat reduction, vegan eating, more cardiovascular exercise, and fat avoidance did not fix
Amber’s weight or health problems.
- During a 1996 St. Petersburg semester, vegan food was hard to maintain, she ate meat and host food, lost weight, and learned that meat was not the bottleneck.
- Protein Power opened the low-carb literature for her, and very-low-carb eating quickly removed the excess weight, produced ketosis on urine strips, and felt good for years.
- Early low-carb practice involved Usenet groups, carb-count books, urine ketone strips, and later expensive blood ketone strips, long before the modern keto boom.
Pregnancy, fat, brain growth, and tissue repair
- Pregnancy brought carbohydrate cravings and weight gain, and the same low-carb approach did not remove the weight after pregnancy in the same way.
- Possible contributors included long antidepressant use, age, hormones, diet trajectory, postpartum physiology, and tissue repair demands.
- The early pregnancy period can drive maternal fat gain, while the later period transfers fat to the fetus; human babies are unusually fat and keep adding fat in the first year.
- Human brain growth continues long after birth and weaning, with childhood and adolescent pruning phases, high energy needs, myelination, and long dependence on caregivers.
- Human body fat and baby fat are tied in the conversation to brain energy, neuroplasticity, social dependence, parental investment, and tribe-like cooperation.
- Postpartum tissue repair, efferocytosis, immune activity, insulin, and energy demand are part of the reason rapid return to pre-pregnancy body composition can be unrealistic.
Zero-carb discovery, carnivore trial, and mood
- In 2008, Amber found zero-carb forums where low-carb people with stalled weight loss often lost weight after removing plants.
- The term zero carb was inaccurate because some animal foods contain carbohydrate and some plant foods contain none; carnivore later became her preferred term despite its own problems.
- Her low-carb diet was vegetable-heavy, with salads and cruciferous vegetables, so a plant-free trial felt psychologically extreme.
- She set a three-week animal-food trial for weight loss, lost about a pound every other day, felt unusually well, and stayed with the diet past the planned birthday break.
- Her depression history began before low carb, included long Prozac use, a later bipolar type-two diagnosis, hypomanic periods, and medications that caused word retrieval problems, brain zaps, sedation, and severe anxiety.
- On carnivore she had sustained mood remission long enough that the bipolar diagnosis no longer matched her lived condition.
- The depression had included suicidal despair, and the diet change gave her life back in a way cognitive behavioral therapy had not achieved.
- She stopped medication during pregnancy, later returned to carnivore soon after birth, kept nursing, and never needed to resume antidepressants, while still warning against abrupt medication withdrawal.
- Dave’s carb-swap mood crash gave him a one-day glimpse of sudden biochemical mood collapse and changed his view of people with severe mood problems.
Carnivore writing, naming, and community growth
- Amber began writing on ketogenic diets and created a separate domain for carnivorous diet writing because plant-free eating sounded too radical to attach to her broader keto work.
- In 2012 her ketogenic writing was unusually prominent online, while carnivore remained a tiny subculture with zero-carb forums and older animal-food traditions.
- She used carnivorous or carnivore to avoid the confusion around zero carb, while still acknowledging that she did not invent the diet.
- By 2016 she was speaking more openly, and in 2017 she gave carnivore talks at the Low Carb Cruise, KetoFest, and KetoCon after repeated vegetable-necessity questions at ketogenic events.
- In 2018, rising interest led her to create the March 2019 Boulder carnivore conference before Low Carb Denver; the first venue sold out and the event became a marker of wider carnivore interest.
- A larger 2020 follow-up conference was first delayed and then put off indefinitely because of COVID uncertainty and because many interested attendees had immune problems.
Plants, immune burden, and anti-nutrients
- Carnivore may help some people by removing plant anti-nutrients, lowering damage at weak intestinal barriers, and freeing immune energy for repair.
- Autoimmune and inflammatory anecdotes included Crohn’s disease, asthma inhaler reduction, joint-pain relapse with vegetables, skin issues, and mood changes.
- Georgia Ede’s plant-defense material made vegetables a possible problem source because plants use thorns, reproductive-part chemicals, protease inhibitors, oxalates, and other defenses.
- Protease inhibitors can interfere with protein digestion; oxalates and other compounds may have disease mechanisms that differ person to person.
- Plant foods bring endogenous-like substances, vitamins, and xenobiotic toxins in the same package; the body can block absorption, route compounds through the liver, or convert them for excretion.
- Low-level plant toxins may produce hormetic antioxidant activity in some contexts, but that stress may be harmful when immune burden or cancer is already high.
Protein, balanced diet, and animal-food fit
- A whole-food plant-based experiment became hard to design because protein powders felt like cheating and plant amino-acid profiles require careful planning.
- Plant and animal tissues use different amino-acid patterns, so a plant-only diet creates a cartridge-balancing problem for essential amino acids such as leucine.
- Dave’s steak calculation found that about nine ounces of steak could cover adult essential amino-acid requirements, while plant combinations needed more complex matching.
- The idea of a balanced diet mostly comes from plant-based eating, because plants vary widely in amino-acid and nutrient patterns.
- Animal flesh already resembles human tissue closely enough that amino-acid and nutrient arithmetic is simpler than the plant-combination problem.
Human evolution, carnivory, and fat dependence
- The expensive-tissue idea links smaller human guts, larger brains, and energy-dense diets; Amber adds that animal foods helped support brain energy demands.
- Homo erectus and later humans are placed in a long hypercarnivorous period with at least 70% animal-source intake in the conversation.
- Humans had limited year-round carbohydrate access, limited ability to turn protein into energy, little usable fiber energy, and therefore a strong need for animal fat.
- Human carnivory differs from cats and canids because humans cannot run on very lean meat and protein-derived glucose at the same level.
- Scavenging marrow and brain from bones may have helped humans enter carnivory through high-fat animal resources left after large predators finished a kill.
- The show Alone gave a practical example of people starving despite meat access because wild small game and lean big game do not supply enough fat.
Stefansson, Andersen, and all-meat history
- Stefansson’s Arctic experience changed his view of meat-heavy Indigenous diets because he eventually ate the same foods and felt good.
- The Bellevue all-meat experiment with Stefansson and Karsten Andersen found no major deficiencies, but it did find negative calcium balance.
- Andersen became sick on lean meat, and added fat corrected the problem, reinforcing the point that human carnivory needs fatty meat.
- Older zero-carb practice carried lessons from Stefansson and from the Bear that routine liver was unnecessary or even avoidable.
Vitamin C, RDAs, carnitine, and liver
- Meat has small amounts of vitamin C even when databases infer zero, and fresh meat had older scurvy-cure observations before vitamin C knowledge narrowed the story.
- The antiscorbutic vitamin C threshold is much lower than the RDA, and the RDA also includes chronic-disease and antioxidant reasoning derived from broader population contexts.
- The pyromaniac analogy means higher need in a damaged metabolic context does not automatically apply to a metabolically healthy plant-free context.
- Vitamin C after weightlifting may interfere with the inflammatory repair sequence that drives muscle adaptation, so more antioxidant intake is not always free benefit.
- Vitamin C is required to rebuild collagen after dietary collagen is digested, but dietary carnitine can pass through and may spare vitamin C need on high-meat diets.
- Early scurvy symptoms include fatigue, and carnitine synthesis matters because carnitine shuttles fat into mitochondria for oxidation.
- A muscle-meat carnivore diet may function as vitamin-A depletion for people with chronic excess from fortification or supplementation.
- Liver is rich in vitamin A, and regular liver intake became tied to a later nose-to-tail split in which many prominent users added fruit, honey, or plants after carnivore felt bad.
Carnivore boundaries, coffee, and identity
- Carnivore originally meant a practical animal-food protocol, not a literal rule that every plant-derived drug, coffee, spice, or nonfood exposure must be absent.
- The name creates confusion because wild carnivores, cats eating macaroni, and lion-diet imagery do not define the human protocol Amber entered.
- Coffee was often kept because it was viewed as a drug or habit outside nutrition, but a person who keeps coffee and misses the desired result may need a coffee-free trial.
- Coffee can raise fasting triglycerides in some keto or carnivore people independent of caffeine, with decaf and regular coffee producing the same pattern in one guest-post self-test.
- Histamine issues, shellfish allergy, lactose intolerance, fish, fermented meats, dark chocolate, coffee, spices, honey, fruit, and liver can all alter a carnivore experiment in different ways.
- Strict carnivore can be easier than modern keto because categorical rules avoid net-carb games, keto bread, resistance starch, peanuts, and incremental portion creep.
Salt, fluids, and electrolytes
- Dave needs very high salt on deep keto, especially during low-calorie keto phases, and blood work once showed sodium and chloride just below range after cramps.
- Amber almost never adds salt, and some strict carnivore people do better after dropping added salt and electrolyte balancing.
- Plant potassium, higher fluid intake, coffee, sweetened drinks, drinking beyond thirst, and non-carnivore foods can increase sodium needs.
- Herbivores seek salt licks while carnivores often seek the herbivores, which supports the idea that plant-heavy intake can change sodium balance.
- Some people still need extra salt even on carnivore, and Dave’s fructose malabsorption may reduce mineral delivery or absorption.
Restriction, adherence, reintroduction, and non-tribal diet use
- Any diet far from one’s childhood food culture can feel restrictive when medical consequences require adherence.
- Epilepsy and ulcerative colitis create strong adherence incentives because symptoms return quickly when the diet fails.
- Some people can later add foods back after a recovery period; others lose benefits and need stricter rules again.
- Carnivore can be a temporary multi-removal experiment that identifies a problem food class without becoming a permanent identity.
- If someone has high LDL after keto or carnivore and no medical reason for the diet, adding carbohydrate back may reduce stress if carbohydrate is tolerated well.
- A diet tool is not a gold star or tribe membership badge, and needless restriction has no value when the result is worse health or needless stress.
Amber’s later illness and diet experiments
- After about eight years of strong carnivore health, Amber tried high-dose vitamin D, developed rosacea-like flares, then added high-dose vitamin A for several weeks to balance fat-soluble vitamins.
- She later had a severe sinus infection, antibiotics, campylobacter, more antibiotics, then a severe Salmonella hospitalization with pain, opioids, nightmares, and persistent gut damage.
- Long fat malabsorption led to vitamin deficiencies, rapid weight gain, blurry vision, chronic fatigue, and a long period without full recovery.
- The crash may involve vitamin A excess, infection, antibiotics, another exposure, malabsorption, or multiple causes; no single cause is proven.
- Since 2021 she has tried potato experiments, vitamin-A elimination, low carb, meat-centric low carb, dry fasting, and other approaches.
- She is not married to carnivore, but carnivore and low-plant eating still help her mood, and stricter diet still seems useful when symptoms require it.
Lipid energy, LMHR, glucose, and ketones
- Lean-mass hyper-responders have a defined pattern of high LDL, high HDL, low triglycerides, leanness, and low insulin markers on carbohydrate restriction.
- Dave values the LMHR definition because clear cut points helped create a stable research target and avoid naming confusion.
- Prospective LMHR data, five-year follow-up, coronary scans, and participant data matter more than dueling anecdotes from supporters and critics.
- The lipid energy model links low glycogen and low adiposity to higher VLDL export, triglyceride delivery, LDL turnover, high LDL, low triglycerides, and high HDL.
- Amber’s partition idea adds that liver fat can route toward ketones or toward triglyceride export; small differences in flux can create large blood concentration differences.
- When ketones are low, glucose must rise to supply the brain; when ketones are high, glucose does not need to rise as much.
- Serum ketones depend on liver production, blood concentration gradients, tissue clearance, muscle use, training status, and whether fat is traveling as ketone bodies or triglyceride-rich lipoproteins.
- Fat adaptation can lower GLUT4 expression, slow glucose uptake, and raise fasting glucose or A1C without looking like diabetic dysregulation when CGM is flat and fasting insulin is very low.
- Stable glucose plus low insulin shows homeostasis, but tracer studies are needed to separate glucose production from glucose residence time and uptake.
Thyroid, supplements, and homeostasis
- Free T3 can be lower on low-carb or carnivore diets because lower glucose use reduces the need for T3-driven glucose supply.
- Adding T3 when glucose demand is already low may drive lean-mass catabolism because the body harvests substrate to make more glucose.
- Methionine-glycine balance, creatine, methylation, and omega-3/omega-6 balancing were expensive dead ends for Amber, even though they may help some people.
- The body often adapts to added or removed inputs, which Amber connects to the limits of simple chemical-imbalance stories for depression and serotonin drugs.
Good-faith debate and social media
- Bad-faith online debate often begins with personal attacks, wording traps, false summaries, goalpost movement, and time-wasting tactics.
- Good-faith debate starts by proving that the other person has been understood, then steelmans the strongest version before disagreement.
- Misunderstanding is especially frustrating when subtle distinctions are central to the point, because the real issue can be X versus Y, not the simplified version.
- The Bailey trap draws a person into correcting an obviously false criticism, then shifts to a more defensible criticism while keeping the social win from the first accusation.
- A better answer is to keep returning to the first criticism until the shift is acknowledged.
- Long in-person conversation reduces some internet failure modes because both people commit to staying in the room, following up, and unpacking ideas directly.
References
- [00:03] Bitcoin: A Peer-to-Peer Electronic Cash System — https://bitcoin.org/bitcoin.pdf
- [00:04] Zcash Protocol Specification — https://zips.z.cash/protocol/protocol.pdf
- [00:21] Protein Power — https://www.penguinrandomhouse.com/books/44448/protein-power-by-michael-r-eades-md-and-mary-dan-eades-md/
- [00:34] Dr. Atkins' Diet Revolution — https://www.penguinrandomhouse.com/books/6004/dr-atkins-diet-revolution-by-robert-c-atkins-md/
- [01:23] Optimal clinical management of children receiving dietary therapies for epilepsy: Updated recommendations of the International Ketogenic Diet Study Group — https://doi.org/10.1002/epi4.12225
- [01:25] Good Calories, Bad Calories — https://www.penguinrandomhouse.com/books/176680/good-calories-bad-calories-by-gary-taubes/
- [01:28] Little Shop of Horrors? The Risks and Benefits of Eating Plants — https://www.diagnosisdiet.com/full-article/vegetables
- [01:47] Clinical Calorimetry: XLV. Prolonged Meat Diets with a Study of Kidney Function and Ketosis — https://doi.org/10.1016/S0021-9258(18)76842-7
- [01:47] The Effect of an Exclusive Meat Diet Lasting One Year on the Carbohydrate Tolerance of Two Normal Men — https://doi.org/10.1016/S0021-9258(18)77101-9
- [01:56] The Expensive-Tissue Hypothesis: The Brain and the Digestive System in Human and Primate Evolution — https://doi.org/10.1086/204350
- [02:10] Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids — https://doi.org/10.17226/9810
- [02:15] Ascorbic acid and carnitine biosynthesis — https://doi.org/10.1093/ajcn/54.6.1147s
- [02:18] Poisoning for Profits — https://ggenereux.blog/wp-content/uploads/2018/02/poisoningforprofits1.pdf
- [02:23] The Boulder Carnivore Conference 2019 Speakers — https://carnivorycon.com/speakers/
- [03:05] Guest Post – Impact of Coffee on Triglycerides — https://cholesterolcode.com/guest-post-impact-of-coffee-on-triglycerides/
- [03:28] Elevated LDL Cholesterol with a Carbohydrate-Restricted Diet: Evidence for a Lean Mass Hyper-Responder Phenotype — https://doi.org/10.1093/cdn/nzab144
- [03:28] Carbohydrate Restriction-Induced Elevations in LDL-Cholesterol and Atherosclerosis: The KETO Trial — https://doi.org/10.1016/j.jacadv.2024.101109
- [03:39] The Lipid Energy Model: Reimagining Lipoprotein Function in the Context of Carbohydrate-Restricted Diets — https://doi.org/10.3390/metabo12050460
- [03:55] Metabolism of ketone bodies during exercise and training: physiological basis for exogenous supplementation — https://doi.org/10.1113/JP273185
- [03:56] The glucose fatty-acid cycle. Its role in insulin sensitivity and the metabolic disturbances of diabetes mellitus — https://doi.org/10.1016/S0140-6736(63)91500-9
- [04:09] Thyroid Markers and Body Composition Predict LDL-C Change in Lean Healthy Women on a Ketogenic Diet: Experimental Support for the Lipid Energy Model — https://doi.org/10.3389/fendo.2023.1326768
:::
::: spoiler summerizer
Core thesis and wording
- Meat has nutrients as well as protein, and vegetables having nutrients does not make plants uniquely necessary for every person.
- Vitamin C need depends on metabolic condition, dietary pattern, scurvy prevention, antioxidant aims, and spare factors from meat; a plant-free person with good health is not automatically harmed by less vitamin C intake.
- Low measured ketones in keto-adapted people are not automatically proof of better ketone efficiency; when ketones are not high enough for the brain, glucose has to rise.
- Precision matters because association language can slide into causal language; red meat can be linked with cancer in observational data without proving a causal chain from meat to cancer.
- The word overeating can become circular when it only means eating followed by weight gain; that wording hides the actual mechanism behind weight gain.
- Calories-in/calories-out is bookkeeping and thermodynamics, not a causal mechanism; weight loss means more energy left than came in, but it does not prove intentional restriction caused the loss.
- The useful nutrition dispute is why someone ate less or more and why someone moved less or more, not only whether energy balance arithmetic closed.
Amber’s background
- Amber spends her time on family, reading, writing, metabolic topics, neuroscience, evolution, tango, bridge, and synthesis across fields.
- Her mathematics and computer-science background led into cryptography and the cypherpunk idea that technology can protect freedom and privacy where law alone is incomplete.
- Bitcoin solved decentralization through public verification, but its open ledger makes transactions viewable once an address is tied to a person or business.
- Zcash keeps Bitcoin-like decentralization while adding a zero-knowledge proof layer that can verify valid transactions without revealing their contents.
- Language, mathematics, cognition, and computational linguistics overlap for Amber because all of them involve abstractions central to human thinking and modern AI models.
- Russian and French are part of her language background, and the Russia period later became a turning point in her diet history.
Evidence, experiments, and population data
- Protein Power gave Amber a low-carb entry point and a citation trail that led her into medical papers, experimental nutrition, and low-carb practice.
- Randomized experiments are stronger for causality because they isolate a variable; epidemiology is useful for hypotheses and for weakening large-effect causal stories.
- Healthy-user bias bundles official health advice, health motivation, non-smoking, exercise, and food choices, so one observed habit can carry many hidden behaviors.
- Nutrition datasets can miss the most important contrast; fiber data in grain-eating populations cannot answer what happens with no fiber and no grains.
- Observational populations with high carbohydrate intake and low diabetes rates weaken the simple idea that carbohydrate itself causes diabetes.
- Carbohydrate restriction can be useful once diabetes exists without proving carbohydrate was the original cause of the disease.
Early diet history and low carb
- Charles Washington’s phrase "the lucky ones get fat" meant visible weight gain can push people to fix inputs that might otherwise create hidden disease later.
- Amber grew up in a mostly vegetarian household for ethical reasons, and 1990s diet culture made vegetarian, low-fat, and vegan paths feel obvious for weight loss.
- Meat reduction, vegan eating, more cardiovascular exercise, and fat avoidance did not fix
Amber’s weight or health problems.
- During a 1996 St. Petersburg semester, vegan food was hard to maintain, she ate meat and host food, lost weight, and learned that meat was not the bottleneck.
- Protein Power opened the low-carb literature for her, and very-low-carb eating quickly removed the excess weight, produced ketosis on urine strips, and felt good for years.
- Early low-carb practice involved Usenet groups, carb-count books, urine ketone strips, and later expensive blood ketone strips, long before the modern keto boom.
Pregnancy, fat, brain growth, and tissue repair
- Pregnancy brought carbohydrate cravings and weight gain, and the same low-carb approach did not remove the weight after pregnancy in the same way.
- Possible contributors included long antidepressant use, age, hormones, diet trajectory, postpartum physiology, and tissue repair demands.
- The early pregnancy period can drive maternal fat gain, while the later period transfers fat to the fetus; human babies are unusually fat and keep adding fat in the first year.
- Human brain growth continues long after birth and weaning, with childhood and adolescent pruning phases, high energy needs, myelination, and long dependence on caregivers.
- Human body fat and baby fat are tied in the conversation to brain energy, neuroplasticity, social dependence, parental investment, and tribe-like cooperation.
- Postpartum tissue repair, efferocytosis, immune activity, insulin, and energy demand are part of the reason rapid return to pre-pregnancy body composition can be unrealistic.
Zero-carb discovery, carnivore trial, and mood
- In 2008, Amber found zero-carb forums where low-carb people with stalled weight loss often lost weight after removing plants.
- The term zero carb was inaccurate because some animal foods contain carbohydrate and some plant foods contain none; carnivore later became her preferred term despite its own problems.
- Her low-carb diet was vegetable-heavy, with salads and cruciferous vegetables, so a plant-free trial felt psychologically extreme.
- She set a three-week animal-food trial for weight loss, lost about a pound every other day, felt unusually well, and stayed with the diet past the planned birthday break.
- Her depression history began before low carb, included long Prozac use, a later bipolar type-two diagnosis, hypomanic periods, and medications that caused word retrieval problems, brain zaps, sedation, and severe anxiety.
- On carnivore she had sustained mood remission long enough that the bipolar diagnosis no longer matched her lived condition.
- The depression had included suicidal despair, and the diet change gave her life back in a way cognitive behavioral therapy had not achieved.
- She stopped medication during pregnancy, later returned to carnivore soon after birth, kept nursing, and never needed to resume antidepressants, while still warning against abrupt medication withdrawal.
- Dave’s carb-swap mood crash gave him a one-day glimpse of sudden biochemical mood collapse and changed his view of people with severe mood problems.
Carnivore writing, naming, and community growth
- Amber began writing on ketogenic diets and created a separate domain for carnivorous diet writing because plant-free eating sounded too radical to attach to her broader keto work.
- In 2012 her ketogenic writing was unusually prominent online, while carnivore remained a tiny subculture with zero-carb forums and older animal-food traditions.
- She used carnivorous or carnivore to avoid the confusion around zero carb, while still acknowledging that she did not invent the diet.
- By 2016 she was speaking more openly, and in 2017 she gave carnivore talks at the Low Carb Cruise, KetoFest, and KetoCon after repeated vegetable-necessity questions at ketogenic events.
- In 2018, rising interest led her to create the March 2019 Boulder carnivore conference before Low Carb Denver; the first venue sold out and the event became a marker of wider carnivore interest.
- A larger 2020 follow-up conference was first delayed and then put off indefinitely because of COVID uncertainty and because many interested attendees had immune problems.
Plants, immune burden, and anti-nutrients
- Carnivore may help some people by removing plant anti-nutrients, lowering damage at weak intestinal barriers, and freeing immune energy for repair.
- Autoimmune and inflammatory anecdotes included Crohn’s disease, asthma inhaler reduction, joint-pain relapse with vegetables, skin issues, and mood changes.
- Georgia Ede’s plant-defense material made vegetables a possible problem source because plants use thorns, reproductive-part chemicals, protease inhibitors, oxalates, and other defenses.
- Protease inhibitors can interfere with protein digestion; oxalates and other compounds may have disease mechanisms that differ person to person.
- Plant foods bring endogenous-like substances, vitamins, and xenobiotic toxins in the same package; the body can block absorption, route compounds through the liver, or convert them for excretion.
- Low-level plant toxins may produce hormetic antioxidant activity in some contexts, but that stress may be harmful when immune burden or cancer is already high.
Protein, balanced diet, and animal-food fit
- A whole-food plant-based experiment became hard to design because protein powders felt like cheating and plant amino-acid profiles require careful planning.
- Plant and animal tissues use different amino-acid patterns, so a plant-only diet creates a cartridge-balancing problem for essential amino acids such as leucine.
- Dave’s steak calculation found that about nine ounces of steak could cover adult essential amino-acid requirements, while plant combinations needed more complex matching.
- The idea of a balanced diet mostly comes from plant-based eating, because plants vary widely in amino-acid and nutrient patterns.
- Animal flesh already resembles human tissue closely enough that amino-acid and nutrient arithmetic is simpler than the plant-combination problem.
Human evolution, carnivory, and fat dependence
- The expensive-tissue idea links smaller human guts, larger brains, and energy-dense diets; Amber adds that animal foods helped support brain energy demands.
- Homo erectus and later humans are placed in a long hypercarnivorous period with at least 70% animal-source intake in the conversation.
- Humans had limited year-round carbohydrate access, limited ability to turn protein into energy, little usable fiber energy, and therefore a strong need for animal fat.
- Human carnivory differs from cats and canids because humans cannot run on very lean meat and protein-derived glucose at the same level.
- Scavenging marrow and brain from bones may have helped humans enter carnivory through high-fat animal resources left after large predators finished a kill.
- The show Alone gave a practical example of people starving despite meat access because wild small game and lean big game do not supply enough fat.
Stefansson, Andersen, and all-meat history
- Stefansson’s Arctic experience changed his view of meat-heavy Indigenous diets because he eventually ate the same foods and felt good.
- The Bellevue all-meat experiment with Stefansson and Karsten Andersen found no major deficiencies, but it did find negative calcium balance.
- Andersen became sick on lean meat, and added fat corrected the problem, reinforcing the point that human carnivory needs fatty meat.
- Older zero-carb practice carried lessons from Stefansson and from the Bear that routine liver was unnecessary or even avoidable.
Vitamin C, RDAs, carnitine, and liver
- Meat has small amounts of vitamin C even when databases infer zero, and fresh meat had older scurvy-cure observations before vitamin C knowledge narrowed the story.
- The antiscorbutic vitamin C threshold is much lower than the RDA, and the RDA also includes chronic-disease and antioxidant reasoning derived from broader population contexts.
- The pyromaniac analogy means higher need in a damaged metabolic context does not automatically apply to a metabolically healthy plant-free context.
- Vitamin C after weightlifting may interfere with the inflammatory repair sequence that drives muscle adaptation, so more antioxidant intake is not always free benefit.
- Vitamin C is required to rebuild collagen after dietary collagen is digested, but dietary carnitine can pass through and may spare vitamin C need on high-meat diets.
- Early scurvy symptoms include fatigue, and carnitine synthesis matters because carnitine shuttles fat into mitochondria for oxidation.
- A muscle-meat carnivore diet may function as vitamin-A depletion for people with chronic excess from fortification or supplementation.
- Liver is rich in vitamin A, and regular liver intake became tied to a later nose-to-tail split in which many prominent users added fruit, honey, or plants after carnivore felt bad.
Carnivore boundaries, coffee, and identity
- Carnivore originally meant a practical animal-food protocol, not a literal rule that every plant-derived drug, coffee, spice, or nonfood exposure must be absent.
- The name creates confusion because wild carnivores, cats eating macaroni, and lion-diet imagery do not define the human protocol Amber entered.
- Coffee was often kept because it was viewed as a drug or habit outside nutrition, but a person who keeps coffee and misses the desired result may need a coffee-free trial.
- Coffee can raise fasting triglycerides in some keto or carnivore people independent of caffeine, with decaf and regular coffee producing the same pattern in one guest-post self-test.
- Histamine issues, shellfish allergy, lactose intolerance, fish, fermented meats, dark chocolate, coffee, spices, honey, fruit, and liver can all alter a carnivore experiment in different ways.
- Strict carnivore can be easier than modern keto because categorical rules avoid net-carb games, keto bread, resistance starch, peanuts, and incremental portion creep.
Salt, fluids, and electrolytes
- Dave needs very high salt on deep keto, especially during low-calorie keto phases, and blood work once showed sodium and chloride just below range after cramps.
- Amber almost never adds salt, and some strict carnivore people do better after dropping added salt and electrolyte balancing.
- Plant potassium, higher fluid intake, coffee, sweetened drinks, drinking beyond thirst, and non-carnivore foods can increase sodium needs.
- Herbivores seek salt licks while carnivores often seek the herbivores, which supports the idea that plant-heavy intake can change sodium balance.
- Some people still need extra salt even on carnivore, and Dave’s fructose malabsorption may reduce mineral delivery or absorption.
Restriction, adherence, reintroduction, and non-tribal diet use
- Any diet far from one’s childhood food culture can feel restrictive when medical consequences require adherence.
- Epilepsy and ulcerative colitis create strong adherence incentives because symptoms return quickly when the diet fails.
- Some people can later add foods back after a recovery period; others lose benefits and need stricter rules again.
- Carnivore can be a temporary multi-removal experiment that identifies a problem food class without becoming a permanent identity.
- If someone has high LDL after keto or carnivore and no medical reason for the diet, adding carbohydrate back may reduce stress if carbohydrate is tolerated well.
- A diet tool is not a gold star or tribe membership badge, and needless restriction has no value when the result is worse health or needless stress.
Amber’s later illness and diet experiments
- After about eight years of strong carnivore health, Amber tried high-dose vitamin D, developed rosacea-like flares, then added high-dose vitamin A for several weeks to balance fat-soluble vitamins.
- She later had a severe sinus infection, antibiotics, campylobacter, more antibiotics, then a severe Salmonella hospitalization with pain, opioids, nightmares, and persistent gut damage.
- Long fat malabsorption led to vitamin deficiencies, rapid weight gain, blurry vision, chronic fatigue, and a long period without full recovery.
- The crash may involve vitamin A excess, infection, antibiotics, another exposure, malabsorption, or multiple causes; no single cause is proven.
- Since 2021 she has tried potato experiments, vitamin-A elimination, low carb, meat-centric low carb, dry fasting, and other approaches.
- She is not married to carnivore, but carnivore and low-plant eating still help her mood, and stricter diet still seems useful when symptoms require it.
Lipid energy, LMHR, glucose, and ketones
- Lean-mass hyper-responders have a defined pattern of high LDL, high HDL, low triglycerides, leanness, and low insulin markers on carbohydrate restriction.
- Dave values the LMHR definition because clear cut points helped create a stable research target and avoid naming confusion.
- Prospective LMHR data, five-year follow-up, coronary scans, and participant data matter more than dueling anecdotes from supporters and critics.
- The lipid energy model links low glycogen and low adiposity to higher VLDL export, triglyceride delivery, LDL turnover, high LDL, low triglycerides, and high HDL.
- Amber’s partition idea adds that liver fat can route toward ketones or toward triglyceride export; small differences in flux can create large blood concentration differences.
- When ketones are low, glucose must rise to supply the brain; when ketones are high, glucose does not need to rise as much.
- Serum ketones depend on liver production, blood concentration gradients, tissue clearance, muscle use, training status, and whether fat is traveling as ketone bodies or triglyceride-rich lipoproteins.
- Fat adaptation can lower GLUT4 expression, slow glucose uptake, and raise fasting glucose or A1C without looking like diabetic dysregulation when CGM is flat and fasting insulin is very low.
- Stable glucose plus low insulin shows homeostasis, but tracer studies are needed to separate glucose production from glucose residence time and uptake.
Thyroid, supplements, and homeostasis
- Free T3 can be lower on low-carb or carnivore diets because lower glucose use reduces the need for T3-driven glucose supply.
- Adding T3 when glucose demand is already low may drive lean-mass catabolism because the body harvests substrate to make more glucose.
- Methionine-glycine balance, creatine, methylation, and omega-3/omega-6 balancing were expensive dead ends for Amber, even though they may help some people.
- The body often adapts to added or removed inputs, which Amber connects to the limits of simple chemical-imbalance stories for depression and serotonin drugs.
Good-faith debate and social media
- Bad-faith online debate often begins with personal attacks, wording traps, false summaries, goalpost movement, and time-wasting tactics.
- Good-faith debate starts by proving that the other person has been understood, then steelmans the strongest version before disagreement.
- Misunderstanding is especially frustrating when subtle distinctions are central to the point, because the real issue can be X versus Y, not the simplified version.
- The Bailey trap draws a person into correcting an obviously false criticism, then shifts to a more defensible criticism while keeping the social win from the first accusation.
- A better answer is to keep returning to the first criticism until the shift is acknowledged.
- Long in-person conversation reduces some internet failure modes because both people commit to staying in the room, following up, and unpacking ideas directly.
References
- [00:03] Bitcoin: A Peer-to-Peer Electronic Cash System — https://bitcoin.org/bitcoin.pdf
- [00:04] Zcash Protocol Specification — https://zips.z.cash/protocol/protocol.pdf
- [00:21] Protein Power — https://www.penguinrandomhouse.com/books/44448/protein-power-by-michael-r-eades-md-and-mary-dan-eades-md/
- [00:34] Dr. Atkins' Diet Revolution — https://www.penguinrandomhouse.com/books/6004/dr-atkins-diet-revolution-by-robert-c-atkins-md/
- [01:23] Optimal clinical management of children receiving dietary therapies for epilepsy: Updated recommendations of the International Ketogenic Diet Study Group — https://doi.org/10.1002/epi4.12225
- [01:25] Good Calories, Bad Calories — https://www.penguinrandomhouse.com/books/176680/good-calories-bad-calories-by-gary-taubes/
- [01:28] Little Shop of Horrors? The Risks and Benefits of Eating Plants — https://www.diagnosisdiet.com/full-article/vegetables
- [01:47] Clinical Calorimetry: XLV. Prolonged Meat Diets with a Study of Kidney Function and Ketosis — https://doi.org/10.1016/S0021-9258(18)76842-7
- [01:47] The Effect of an Exclusive Meat Diet Lasting One Year on the Carbohydrate Tolerance of Two Normal Men — https://doi.org/10.1016/S0021-9258(18)77101-9
- [01:56] The Expensive-Tissue Hypothesis: The Brain and the Digestive System in Human and Primate Evolution — https://doi.org/10.1086/204350
- [02:10] Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids — https://doi.org/10.17226/9810
- [02:15] Ascorbic acid and carnitine biosynthesis — https://doi.org/10.1093/ajcn/54.6.1147s
- [02:18] Poisoning for Profits — https://ggenereux.blog/wp-content/uploads/2018/02/poisoningforprofits1.pdf
- [02:23] The Boulder Carnivore Conference 2019 Speakers — https://carnivorycon.com/speakers/
- [03:05] Guest Post – Impact of Coffee on Triglycerides — https://cholesterolcode.com/guest-post-impact-of-coffee-on-triglycerides/
- [03:28] Elevated LDL Cholesterol with a Carbohydrate-Restricted Diet: Evidence for a Lean Mass Hyper-Responder Phenotype — https://doi.org/10.1093/cdn/nzab144
- [03:28] Carbohydrate Restriction-Induced Elevations in LDL-Cholesterol and Atherosclerosis: The KETO Trial — https://doi.org/10.1016/j.jacadv.2024.101109
- [03:39] The Lipid Energy Model: Reimagining Lipoprotein Function in the Context of Carbohydrate-Restricted Diets — https://doi.org/10.3390/metabo12050460
- [03:55] Metabolism of ketone bodies during exercise and training: physiological basis for exogenous supplementation — https://doi.org/10.1113/JP273185
- [03:56] The glucose fatty-acid cycle. Its role in insulin sensitivity and the metabolic disturbances of diabetes mellitus — https://doi.org/10.1016/S0140-6736(63)91500-9
- [04:09] Thyroid Markers and Body Composition Predict LDL-C Change in Lean Healthy Women on a Ketogenic Diet: Experimental Support for the Lipid Energy Model — https://doi.org/10.3389/fendo.2023.1326768
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