jet

• Sally Norton was trained to limit animal fats, butter, and salt while elevating vegetables, and that training damaged her health.
• Chronic health problems, fatigue, and vulvar pain became the entry point into oxalates and low-oxalate eating.
• The Vulvar Pain Foundation had used low-oxalate diet work for pelvic pain long before it reached her school training.
• Oxalate first entered the curriculum as a kidney-stone issue, then the same chemistry came to matter far beyond kidneys.
• Sweet potatoes, Swiss chard, nuts, potatoes, peanuts, chocolate, spinach, and similar foods can create a bioaccumulation problem.

OXALATE INTAKE, STORAGE, AND RELEASE

• Oxalate enters from foods as oxalic acid and plant-made calcium oxalate crystals, while the liver also makes some from vitamin C and amino acid breakdown.
• Oxalic acid enters through the stomach and upper intestine, flows into the liver, then moves through the heart, lungs, circulation, and kidneys.
• Oxalic acid chelates calcium, magnesium, iron, and other minerals, so blood and cellular electrolyte handling can become unstable after meals.
• Calcium signaling runs cellular communication, heart pacing, nerve function, mitochondria, and endoplasmic-reticulum signaling, so oxalate disrupts basic physiology.
• The body stores oxalate in thyroid glands, bone marrow, tendons, injured tissue, inflamed tissue, degenerating cells, and areas of wear and tear.
• Healthy cells can resist oxalate better, while damaged or regenerating tissue becomes sticky to calcium oxalate and attracts more inflammation.
• Low-oxalate eating can initially feel worse because stored oxalate moves back through blood, kidneys, urine, and tissues during clearing.
• Adding oxalate back can temporarily calm symptoms because it can signal the body to slow the clearing process.
• Heavy clearing can cause cloudy urine, kidney stress, kidney stones, electrolyte disturbance, blood-pressure spikes, atrial fibrillation, fatigue, brain fog, cramps, mood disruption, and sleep disruption.

CELLULAR DAMAGE AND CANCER MECHANISMS

• Oxalate can scramble cell membranes, flip inner-leaflet molecules outward, and make immune cells remove cells as damaged material.
• Mitochondria are double-membrane structures, so oxalate-driven membrane damage can flatten cristae, increase free radicals, and weaken energy production.
• Damaged cells leak potassium and other danger signals, activate inflammasomes, raise lactate dehydrogenase, raise osteopontin, and deepen oxidative stress.
• Chronic exposure through spinach, potatoes, chocolate, nuts, sweet potatoes, and Swiss chard keeps these stress signals active multiple times per day.
• Breast-cancer work connects oxalate ions and crystals with aggressive tumor behavior, microcalcifications, mesenchymal transition, and hydroxyapatite deposits.
• Warburg-style cancer metabolism fits the concern: damaged mitochondria drive fermentation, glucose and glutamine demand, free radicals, mutations, and further mitochondrial injury.
• Older enzyme work connects oxalate with interference in energy metabolism, but modern funding has not carried that line forward enough.

NUTRITION EDUCATION, INCENTIVES, AND IDEOLOGY

• The medical and scientific system shifted toward product development, revenue, corporate medicine, and guideline obedience.
• Prevention through avoiding excess oxalate has little commercial upside compared with drugs, procedures, and products.
• Nutrition inherited vegetarian ideology, especially in places tied to Seventh-day Adventism and plant-based academic culture.
• Loma Linda, Harvard, Cornell, Colin Campbell, Walter Willett, and related institutions sit inside that plant-forward academic history.
• Ivy League nutrition training left Sally Norton with pre-digested conclusions: fat caused disease, saturated fat was harmful, and sugar was benign except for cavities.
• Industry money, sugar funding, pharmaceutical ties, and guideline committees shape what doctors learn and what patients are offered.
• Good nutrition training needs original literature, cell biology, biochemistry, research methods, old papers, and independent thinking.

PLANT TOXINS AND MODERN HEALTH FOODS

• Toxic Superfoods focuses mainly on oxalates, while the wider plant-toxin topic includes saponins, tannins, and other gut-damaging compounds.
• Modern healthy-eating styles can increase plant toxins through spinach, almonds, chia, nuts, dark chocolate, sweet potatoes, Swiss chard, and high-oxalate keto or vegan foods.
• Seed oils and sugar can worsen oxalate trouble, especially when combined with spinach salads, sweet dressings, raisins, and dessert patterns.
• Tannins harden proteins, saponins dissolve membranes, and many plant compounds act first on the gut.
• Phytonutrients are better understood as phytotoxins when the body is trying to avoid or neutralize them.

LOW-OXALATE TRANSITION AND SUPPORT

• Abruptly jumping from high-oxalate vegan or keto eating into carnivore can be a major metabolic shock.
• Cells can shift within days when oxalate intake drops, so gradual reduction is safer than mobilizing thyroid, bone-marrow, tendon, and tissue stores all at once.
• Reduction can start with spinach, then nuts, then other high-oxalate staples, while keeping the process slow enough for the body and psyche.
• Electrolytes matter because oxalate clearing can waste sodium and potassium and disrupt calcium and magnesium handling.
• Calcium citrate, potassium citrate, salt, B vitamins, sunshine, mineral baths, and small oxalate doses such as tea can help slow excessive clearing.
• Meat-based eating supplies a strong base for healing, and full carnivore can be a useful stage during oxalate recovery.

CARBS, CARNIVORE, AND METABOLIC FLEXIBILITY

• Former vegetarians or high-oxalate keto eaters may carry a longer oxalate history into carnivore than lifelong meat-heavy eaters.
• Oxalate poisoning can disrupt gluconeogenesis, glycogen, blood sugar, sleep, cramps, and electrolyte stability, making some people need carbohydrates.
• Paul Saladino’s carnivore problems fit this pattern more than Shawn Baker’s history because prior plant-heavy eating changes the background load.
• A mostly carnivore diet can still include carefully chosen carbs when sleep, cramps, and function improve with them.
• Carbs are best kept deliberate, often with dinner, without returning to processed foods, high-oxalate staples, or loss of control around sugar.
• Chronic ketosis is not automatically the correct endpoint for every body; metabolic flexibility and movement in and out of ketosis can be healthier.
• Insulin spikes are not inherently bad, and eating meat or small carb amounts can help cells pull potassium back into muscles and nerves.

References

• [00:04] Calcium citrate for vulvar vestibulitis: A case report — https://pubmed.ncbi.nlm.nih.gov/1816400/
• [00:04] Urinary oxalate excretion and its role in vulvar pain syndrome — https://doi.org/10.1016/S0002-9378(97)70137-6
• [00:15] Oxalate induces breast cancer — https://doi.org/10.1186/s12885-015-1747-2
• [00:20] The Nobel Prize in Physiology or Medicine 1931 — https://www.nobelprize.org/prizes/medicine/1931/summary/
• [00:20] The Metabolism of Tumors in the Body — https://doi.org/10.1085/jgp.8.6.519
• [00:20] On the Origin of Cancer Cells — https://doi.org/10.1126/science.123.3191.309
• [00:23] Effect of Oxalate on the Activity of Lactate Dehydrogenase Isoenzymes — https://doi.org/10.1038/2021337a0
• [00:48] Toxic Superfoods — https://www.penguinrandomhouse.com/books/646534/toxic-superfoods-by-sally-k-norton-mph/

• Terry had lifelong food struggles, but the pattern was the reverse of most people: weight gain was difficult.
• During military service, at 5'9", weight stayed around 105 to 112 pounds despite supplements, training, and help from every branch.
• A military doctor required a 30-day food log; the average came out around 7,000 calories daily, with one day near 11,000.
• Around age 35, weight rose to about 160 pounds, but that weight felt wrong on a small build.
• Back pain, joint pain, acne, and a 2 a.m. lumbar spasm made "normal degeneration" sound absurd.

Plant study and herbal training

• A horse-science degree led into a master's in clinical herbal medicine after COVID shut down job options.
• That education made plants look different: phytonutrients get attention, while phytochemicals, phytotoxins, and phyto-medicines get ignored.
• Spinach captures the problem: heavy-metal load, low usable iron, high oxalates, and little of the nutrition people think they are getting.
• Plants can be useful as medicine, but that does not make them appropriate food.
• The PhD work in integrative health centers on toxicity and deficiency as the roots of disease.

Signs, deficiencies, and elimination

• Hair, skin, nails, body shape, eczema, psoriasis, gray hair, rough skin, and other surface signs can reveal nutritional and metabolic problems.
• Repeated research exposure kept bringing attention back to elimination diets.
• A true elimination diet removes plant matter, and that points toward carnivore as the cleanest human-health experiment.
• This diet is not a fad; food elimination has medical roots going back to ancient records around 400 BCE.
• Three days on carnivore cleared acne and psoriasis, and 60 days resolved the autoimmune issues in the household.

Reintroduction and daily food

• Reintroductions make the plant problem obvious: grains bring back back pain, gluten brings ear psoriasis, seed oils bring acne, starch tightens the neck, and sugar makes the kidneys hurt.
• A client lost about 100 pounds and many health issues on carnivore, then a pint of ice cream and two Pop-Tarts hit hard enough to cause passing out and staples.
• A normal day is simple: duck eggs and sausage late morning, meat for dinner, and reverse-osmosis water.
• Carnivore made food uncomplicated, cut the grocery bill, removed cravings and hunger, and raised energy high enough for Navy Reserve reenlistment at 47.

Veterans, primacy, and pushback

• Terry works with veterans for free because VA care leaves many of them suffering.
• Veteran suicide is a crisis, and the number commonly repeated is 22 deaths per day.
• The law of primacy explains much of the resistance: early nutrition lessons feel true even when new facts arrive.
• People hear "stop eating plants" and assume salad, but the meaning is nearly everything in the grocery store.
• Children are weaned from breast milk onto pulverized plant matter, snacks, crackers, cereal, and sugar.

Food rules flipped

• The standard nutrition lesson turns 180 degrees: beef, butter, bacon, and eggs are health food.
• Cholesterol has been demonized backward; high-cholesterol populations are the healthy ones, and the brain depends heavily on cholesterol.
• Grains spike blood sugar, inflame the body, and can drive autoimmune and pain problems.
• Package text works as a warning sign, and health language on cereal boxes is especially suspect.
• Broccoli and grocery-store produce are man-made through selective breeding, not ancient human staples.

Industry and medicine

• The cigarette industry moved into food, put addiction science to work, and helped build hyper-palatable products that hijack reward and blunt satiety.
• Big Food creates addiction, Big Pharma sells injections and drugs, and doctors manage decline with pills.
• Doctors are usually good people trained wrongly, not villains.
• Doctors such as Chaffee, Kiltz, Ken Berry, Eric Berg, Mark Hyman, and Shawn Baker helped make this carnivore conversation visible.
• Ken Berry's keto and carnivore story and Shawn Baker's ribeye-only routine show what long-term animal-food eating can look like.

Sugar, dairy, and exit

• All plant foods contain or become sugar in the body, from coffee and broccoli to grains and refined sugar.
• Human insulin is not suited to plant sugars, which is why plant foods raise insulin and feed insulin resistance.
• Dairy is not automatically safe on carnivore because lactose, casomorphins, cheese addiction, and seed-oil-filled milk swaps create problems.
• Seed oils are everywhere, especially in smooth or texturized products such as yogurt, granola, and ice cream.
• In Terry's client experience, tapering off plants fails; cold turkey is the successful route.
• The central lesson is simple: remove plants, eat animal foods, watch the body calm down.

References

• [05:09] Mitigating Toxic Metal Exposure Through Leafy Greens: A Comprehensive Review Contrasting Cadmium and Lead in Spinach — https://doi.org/10.1029/2024GH001081
• [05:09] Iron bioavailability and dietary reference values — https://doi.org/10.3945/ajcn.2010.28674F
• [05:09] Dietary oxalate and kidney stone formation — https://doi.org/10.1152/ajprenal.00373.2018
• [07:11] Nutrition Education in U.S. Medical Schools: Latest Update of a National Survey — https://doi.org/10.1097/ACM.0b013e3181eab71b
• [10:18] Autoimmune protocol diet: A personalized elimination diet for patients with autoimmune diseases — https://doi.org/10.1016/j.metop.2024.100342
• [19:41] Suicide Data Report, 2012 — https://www.va.gov/opa/docs/suicide-data-report-2012-final.pdf
• [23:47] Lack of an association or an inverse association between low-density-lipoprotein cholesterol and mortality in the elderly: a systematic review — https://doi.org/10.1136/bmjopen-2015-010401
• [23:47] Brain Cholesterol: Long Secret Life Behind a Barrier — https://doi.org/10.1161/01.ATV.0000120374.59826.1b
• [25:50] US tobacco companies selectively disseminated hyper-palatable foods into the US food system: Empirical evidence and current implications — https://doi.org/10.1111/add.16332
• [26:55] Vital Pursuit Hits Shelves Nationwide as First-to-Market Nestlé Brand Designed for GLP-1 Users — https://www.nestleusa.com/media/pressreleases/vital-pursuit-nationwide-glp-1
• [43:16] Which Foods May Be Addictive? The Roles of Processing, Fat Content, and Glycemic Load — https://doi.org/10.1371/journal.pone.0117959
• [43:16] Casomorphins and Gliadorphins Have Diverse Systemic Effects Spanning Gut, Brain and Internal Organs — https://doi.org/10.3390/ijerph18157911
• [43:16] Lactose digestion in humans: intestinal lactase appears to be constitutive whereas the colonic microbiome is adaptable — https://doi.org/10.1093/ajcn/nqz104

• Low-carb care began with two patients losing more than 50 lb each through Atkins-style carbohydrate restriction before GLP-1 drugs were available.
• Atkins had decades of clinic practice before strong published trials, and the gap between clinical results and academic acceptance remains important.
• Clinical epidemiology starts with patients and outcomes, even when unpublished practice data brings little academic credit.
• Early-2000s low-carb research moved the field from anecdote toward trials, reviews, and diabetes care.

Ty Beal’s route into nutrition

• Diet changes improved health after travel-related illness, digestive problems, low energy, and undiagnosed lactose intolerance.
• PhD work at UC Davis joined agriculture, geography, ecology, and global nutrition, with focus on undernutrition and food systems.
• Global nutrition had more openness to animal-source foods and nutrient density than conventional low-fat nutrition.
• Work on US dietary guidance, nutrient density, food processing, and global public health came from outside standard dietetics dogma.

Nutrition science and bias

• Harvard-style nutritional epidemiology often yields plant-forward answers through observational models vulnerable to residual confounding.
• PURE changed the dataset by going global, and modeling choices can shift nutrition conclusions even with identical data.
• Small hazard ratios and odds ratios are weak foundations for clinical advice when they do not align with trials or common sense.
• Observational results should generate hypotheses; randomized, controlled, or prospective testing should carry more weight.

Diet fit and food environment

• Different dietary patterns can work because genetics, goals, preferences, adherence, and personal trigger foods differ.
• Low fat can work for some people, lower carb can work for others, and long-term adherence matters more than short-term compliance.
• The modern food environment exposes people to foods they cannot moderate, especially sugar, refined carbs, and ultra-processed products.
• Sugary sodas have no nutritional value beyond water and create nutritional harm.

Nutrient adequacy and food quality

• Micronutrient inadequacy is widespread in the US and globally, including iron, choline, magnesium, potassium, vitamin E, zinc, calcium, B12, and vitamin A.
• Food quality has to include vitamins, minerals, protein quality, omega-3 form, calorie density, fiber, nutrient ratios, processing, and bioavailability.
• Heme iron, preformed vitamin A, zinc, DHA, and EPA show why animal foods often supply nutrients in more usable forms than plant foods.
• Plant foods still contribute vitamin C, potassium, vitamin E, magnesium, fiber, and many compounds outside essential nutrient lists.
• Fiber is not required for life, but it can help or hurt depending on the person, gut tolerance, satiety, and microbial response.

Nutritional Value Score

• The Nutritional Value Score combines priority vitamins, minerals, protein quantity and quality, omega-3s, calorie density, fiber, nutrient ratios, and ultra-processing.
• Dark green leafy vegetables, organ meats, fish, seafood, non-starchy vegetables, unprocessed red meat, eggs, legumes, poultry, yogurt, nuts, and seeds score well.
• Soft drinks, grain-based sweets, instant noodles, salty snack foods, refined grains, and other sweets cluster near the bottom.
• Small dried fish, anchovies, sardines, fatty fish, shellfish, and organs are among the most nutrient-dense individual foods.
• Eggs score solidly but not perfectly because the score measures quantified nutritional value, not whether a food can anchor a whole diet.

Context matters

• Hot dogs and bologna can fit a low-carb emergency or travel context even though their score falls with processing and sodium-to-potassium concerns.
• A low-carb or ketogenic filter could reasonably change scoring weights for sodium, saturated fat, fiber, and carbohydrate-related ratios.
• Food scoring should allow dietary context, such as keto, vegan, vegetarian, or omnivorous patterns, because constraints change the practical question.
• Restrictive diets can reduce overeating partly by limiting variety and removing highly rewarding trigger foods.

Carbohydrates and metabolic context

• Many traditional populations ate substantial starch or carbohydrate without modern metabolic disease.
• The human body can thrive with carbohydrates or without carbohydrates, depending on the person and context.
• High carbohydrate intake is poorly matched to many clinic patients with severe obesity, insulin resistance, knee pain, and low activity.
• DIETFITS-style work shows both high-fat/low-carb and low-fat/high-carb approaches can improve insulin resistance when food quality improves.

Animal-source foods and environment

• The conventional environmental message that animal foods are simply worse for the planet is too simple.
• Animal-source foods have nutritional strengths, environmental costs, and production trade-offs that depend on food type, location, ecosystem, and scale.
• Livestock can harm land and emissions when produced poorly, but circular systems can use grass, crop residues, and inedible plant materials.
• Legumes and diverse plant systems can supply nitrogen, but plant-only agriculture is not an automatic solution for soil, nutrients, or ecosystems.
• Large ruminant populations existed historically on North American grasslands, but modern land ownership, markets, and production systems limit direct revival.
• Better animal-food production requires best practices, incentives, ecological fit, and recognition that there is a limit.

Guidelines and common ground

• The 2025–2030 US dietary guideline process included a scientific group with sections on vegetarian and vegan nutrient adequacy and life-stage nutrition.
• The strongest common ground is real food, nutrient density, lower ultra-processed foods, lower refined carbohydrates, and lower added sugar.
• Criticism often targets messaging, graphics, process, and transparency more than the core food guidance.
• The new guidance puts animal-source and plant-source proteins on the same level, unlike prior guidance that pushed more plant protein.
• A middle-ground view can look extreme when the old mainstream sits far toward one side.

References

• [00:59] Dr. Atkins' New Diet Revolution — https://www.simonandschuster.com/books/Dr-Atkins-New-Diet-Revolution/Robert-C-Atkins/9781493092598

• [01:10] The Protein Power Lifeplan — https://www.hachettebookgroup.com/titles/michael-r-eades-md/the-protein-power-lifeplan/9780446678674/

• [01:12] Ornish Lifestyle Medicine — https://ornish.com/

• [02:31] Effect of 6-Month Adherence to a Very Low Carbohydrate Diet Program — https://doi.org/10.1016/S0002-9343(02)01129-4

• [03:02] A Low-Carbohydrate, Ketogenic Diet versus a Low-Fat Diet to Treat Obesity and Hyperlipidemia — https://doi.org/10.7326/0003-4819-140-10-200405180-00006

• [03:02] Effect of a Low-Carbohydrate, Ketogenic Diet Program Compared to a Low-Fat Diet on Fasting Lipoprotein Subclasses — https://doi.org/10.1016/j.ijcard.2005.08.034

• [03:02] The Effect of a Low-Carbohydrate, Ketogenic Diet versus a Low-Glycemic Index Diet on Glycemic Control in Type 2 Diabetes Mellitus — https://doi.org/10.1186/1743-7075-5-36

• [07:40] Associations of Fats and Carbohydrate Intake with Cardiovascular Disease and Mortality in 18 Countries from Five Continents (PURE) — https://doi.org/10.1016/S0140-6736(17)32252-3

• [08:55] The Carbohydrate-Insulin Model of Obesity: Beyond “Calories In, Calories Out” — https://doi.org/10.1001/jamainternmed.2018.2933

• [14:48] Ultra-Processed Diets Cause Excess Calorie Intake and Weight Gain: An Inpatient Randomized Controlled Trial of Ad Libitum Food Intake — https://doi.org/10.1016/j.cmet.2019.05.008

• [21:04] Micronutrient Deficiencies Among Preschool-Aged Children and Women of Reproductive Age Worldwide — https://doi.org/10.1016/S2214-109X(22)00367-9

• [22:14] Nutrient-Dense Foods and Diverse Diets Are Important for Ensuring Adequate Nutrition Globally — https://doi.org/10.1073/pnas.2319007121

• [25:33] Perspective: Nutrient Bioavailability Is the Missing Ingredient Connecting Food Systems to Nutrition Security and Environmental Sustainability — https://doi.org/10.1016/j.ajcnut.2026.101253

• [27:14] Hunter-Gatherer Energetics and Human Obesity — https://doi.org/10.1371/journal.pone.0040503

• [28:53] Effect of Low-Fat vs Low-Carbohydrate Diet on 12-Month Weight Loss in Overweight Adults and the Association With Genotype Pattern or Insulin Secretion: The DIETFITS Randomized Clinical Trial — https://doi.org/10.1001/jama.2018.0245

• [29:02] Weight, Insulin Resistance, Blood Lipids, and Diet Quality Changes Associated with Ketogenic and Ultra Low-Fat Dietary Patterns: A Secondary Analysis of the DIETFITS Randomized Clinical Trial — https://doi.org/10.3389/fnut.2023.1220020

• [29:35] Nutritional Value Score Rates Foods Based on Nutrient Density and Noncommunicable Disease Prevention — https://doi.org/10.1016/j.tjnut.2026.101443

• [42:45] Friend or Foe? The Role of Animal-Source Foods in Healthy and Environmentally Sustainable Diets — https://doi.org/10.1016/j.tjnut.2022.10.016

• [50:51] Scientific Foundation for the Dietary Guidelines for Americans — https://cdn.realfood.gov/Scientific%20Report.pdf

• [50:51] The Scientific Foundation for the Dietary Guidelines for Americans Appendices — https://cdn.realfood.gov/Scientific%20Report%20Appendices.pdf

• [51:08] Dietary Guidelines for Americans, 2025–2030 — https://cdn.realfood.gov/DGA.pdf

• Ryan came to carnivore after teaching nutrition and fitness for almost a decade, stepping away for music and bathroom-remodeling work, and then returning after his own health drifted.
• His first model was the standard fitness-template diet: six meals per day, oatmeal and protein in the morning, lean proteins, low fat, complex carbs, protein snacks, vegetables and meat at night, and casein protein before bed.
• That model looked valid because bodybuilding examples, fitness-model diets, certifications, continuing education, expert voices, client progress, exercise structure, and movement away from junk food all reinforced it.
• The bigger lesson is blind spots: a person can be sincere, educated, paid, certified, and still pass on a model that later turns out to be antibbiological.

Keto, carnivore, and the 60-day test

• After seeing himself heavier in music-video footage in 2022, Ryan returned to nutrition research and heard for the first time that there is no essential carbohydrate.
• In early 2023, he tested keto with salads, avocados, olive oil, vinegar dressing, greens, onions, peppers, lean meat, and eggs; mental acuity, sleep, weight, and GERD improved, but the diet still had cheating and plant-food blind spots.
• In October 2023, carnivore became the first diet model where the pieces all fit: only animal foods, no carbohydrate need, no fiber requirement, and food he already loved.
• For the final 10 weeks of 2023, he consumed carnivore material, stocked beef, tallow, butter, ghee, bacon fat, salt, and other basics, then set January 1, 2024 as a 60-day test.
• Within three weeks, the result was obvious enough that the planned cheat no longer appealed; by six weeks, the diet had become too effective to interrupt.

Health changes during carnivore

• In the first 60 days, energy, mental clarity, recall, work performance, sleep quality, and sleep efficiency rose sharply.
• Chronic GERD had been severe enough to require an endoscopy in 2023, with early Barrett's esophagus damage and an omeprazole recommendation.
• Longstanding SVT, eczema, delayed visual adjustment, panic attacks, digestive issues, joint pain, lower-back pain, and old ACL-related knee soreness were part of the baseline problem list.
• Within six weeks, every symptom was either gone or reduced to a manageable level, and later the remaining issues disappeared.
• From January 1, 2024 to March 1, 2025, Ryan stayed perfectly carnivore for 14 months, reached the best shape and health of his life, and felt as if he had taken 20 years off his age.

The cat lesson

• Nine years earlier, Ryan adopted a FeLV-positive shelter cat that was expected to live about a year to a year and a half, with damaged lungs, bad teeth, bad gums, missing fur, coughing fits, and no meow.
• Researching cats made the diet lesson concrete: cats are obligate hypercarnivores, so the household built a raw-food process with freezer storage, grinding, supplements, omega balance, water, bone, skin, fat, and exact ratios.
• The cat lived nine years and became a full, long-haired, healthy-looking animal, which reinforced the idea that species-specific nutrition can change the course of decline.
• That experience combined with Ryan's own dietary progression made the earlier teaching feel wrong, even though he had not known it was wrong at the time.

Tour relapse and fiber

• After 14 perfect months, Ryan deliberately broke the diet during Japan and Europe touring, eating ramen, takoyaki, convenience-store foods, catering, pizza, sugar, starch, and mixed meals.
• In roughly a month, he gained about 20 pounds, and eczema, heartburn, SVT, digestive distress, and other issues returned.
• Fiber became the clearest example of a blind spot: he had taught that everyone needs fiber, but carbohydrates and fiber are not essential.
• Microbiome-diversity evidence does not settle the issue for Ryan, because large parts of human history and many populations had little or no fiber, and carnivorous animals do not seek dietary fiber except incidentally through prey contents or hair.
• On carnivore, bowel function became better and less frequent, gas and bloating disappeared, and reintroducing plant foods made the digestive contrast unmistakable.

Blind spots in plant-food nutrition

• Nutritional epidemiology can isolate a positive nutrient in a plant, such as quercetin in onions or vitamins in broccoli, while ignoring the negative side of the same food package.
• The crack-cocaine analogy makes the point: a pleasant or beneficial effect does not prove the whole item is good once downstream consequences are included.
• Plant foods bring fiber plus plant-defense compounds such as phytic acid, tannins, oxalic acid, saponins, flavonoids, lectins, phytates, and oxalates.
• Fiber mechanically passes through a digestive tract that cannot digest cellulose, while protease, lipase, and amylase show that human digestion is built around protein, fat, and limited carbohydrate handling.

Digestive biology and anthropology

• Comparing 10 carnivorous animals, 10 herbivorous animals, and humans makes the human digestive system look carnivorous: monogastric, acid-producing, simple, and suited to meat and fat.
• Herbivores require fermentation systems, large ceca, complex stomachs, massive colons, cud-chewing, hind-gut fermentation, or special fecal reuptake mechanisms to extract nutrients from cellulose.
• Humans have very strong stomach acid, similar to carnivores and second only to vultures in the comparison used here, which fits scavenging or meat digestion better than herbivory.
• Human traits such as forward-facing eyes, bipedality, shoulder mobility, hunting ability, and brain development fit a carnivorous anthropology story better than a plant-centered story.
• Red meat is the ultimate human food because it carries all nine essential amino acids, cofactors, fat, collagen, and other animal-source materials in a digestible package.

Animals, species-specific diets, and modern food

• Every animal in nature follows a species-specific diet, while humans are the unusual animal that manufactures food, pays for it, and then loses instinct.
• Wild animals have acute problems such as injury, predation, infection, and harsh conditions, but chronic human-style disease is not the normal species-specific pattern.
• Raccoons near human food waste and dogs eating human-style snacks show the same principle: human food can create metabolic problems in other animals.
• Red pandas look like an exception because they have a carnivore-style digestive system but eat bamboo; habitat loss and lost competitive advantage help explain the mismatch.
• Herbivores graze all day because plants are low-density and hard to extract from, while carnivores eat nutrient-dense meals and rest; humans on carnivore work the same way.

Fuel mixing, diabetes, and practical transition

• Most animals keep a main diet and do not build mixed plates, and mixing carbohydrate with fat creates a fuel-conflict problem like gasoline and diesel in one car.
• The Randle cycle helps explain why glucose enters the blood first and why that should be read as urgent disposal, not proof that glucose is the preferred fuel.
• On carnivore, the triglyceride-HDL-blood-sugar triangle improves, type 2 diabetes has been easy to reverse in Ryan's coaching experience, and type 1 diabetes can need much less insulin.
• Most people should rip the band-aid off into high-fat carnivore, while some may need care around oxalate dumping, medication changes, and the first-month roller coaster.
• The first month can swing between feeling excellent and feeling awful, but once the microbiome changes and ketogenesis takes over, the benefits become obvious.

References

• [00:13] The Biology of Human Starvation — https://doi.org/10.5749/j.ctv9b2tqv
• [00:22] Feline Leukemia Virus — https://www.vet.cornell.edu/departments/cornell-feline-health-center/health-information/feline-health-topics/feline-leukemia-virus
• [00:26] Feeding Your Cat — https://www.vet.cornell.edu/departments-centers-and-institutes/cornell-feline-health-center/health-information/feline-health-topics/feeding-your-cat
• [00:32] The Gut Microbiome, Aging, and Longevity: A Systematic Review — https://doi.org/10.3390/nu12123759
• [00:32] Diversity of the gut-microbiome related to cognitive behavioral outcomes in healthy older adults — https://doi.org/10.1016/j.archger.2021.104464
• [00:42] The Evolution of Stomach Acidity and Its Relevance to the Human Microbiome — https://doi.org/10.1371/journal.pone.0134116
• [00:50] Enhanced access to anthropogenic food waste is related to hyperglycemia in raccoons (Procyon lotor) — https://doi.org/10.1093/conphys/coy026
• [00:55] The evolution of the gut microbiota in the giant and the red pandas — https://doi.org/10.1038/srep10185
• [00:59] 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
• [01:00] The Expensive-Tissue Hypothesis: The Brain and the Digestive System in Human and Primate Evolution — https://doi.org/10.1086/204350

• Vitamin C is tied to the scurvy story, with bleeding-gum avoidance as the narrow endpoint.
• The form central here is DHAA from animal foods, not plant ascorbic acid or supplement megadoses.
• GULO gene loss is an efficient adaptation to a meat-based diet.
• The name ascorbic acid keeps nutrition tied to anti-scurvy thinking across more than a century.

DHAA as the usable form

• DHAA is oxidized vitamin C, not omega-3 DHA, and it can convert back into ascorbic acid inside cells.
• Red blood cells take up DHAA, convert it back into ascorbic acid, and move it through the bloodstream.
• DHAA uses glucose transporters, especially GLUT1, which gives it strong cellular access.
• DHAA crosses the blood-brain barrier, enters cell membranes, and reaches mitochondria.
• The body uses DHAA where oxidative stress is high, especially in tissues with heavy oxygen demand.
• Blood plasma is mostly ascorbic acid, while heart and lung tissue can contain a large DHAA share of total vitamin C.

Evolution and recycling

• Most mammals make vitamin C from glucose, while humans and a few other species lost that pathway through GULO gene loss.
• That loss fits ancestral reliance on fresh animal foods that already supplied DHAA.
• Humans recycle ascorbic acid efficiently, so small amounts support collagen and core vitamin C functions.
• Low carbohydrate intake lowers glucose competition for transporters, making the DHAA pathway more coherent.
• The problem is not a missing orange; it is a modern misunderstanding of which vitamin C form matters.

Scurvy, sailors, and food history

• The sailor scurvy story is not simply a citrus story; it is also a fresh-meat story.
• Long voyages relied on hardtack, grain, old salted pork, and other depleted rations without fresh meat.
• When meat ran out or became rancid, sailors were left with grain-heavy food that lacked the needed vitamin C activity.
• Fresh meat had already been known to cure scurvy, while the later lime story dominated the public lesson.
• Nutrition databases and old food tables miss the point when they focus only on plant ascorbic acid and omit DHAA in meat.

Antioxidants, glucose damage, and low-carb metabolism

• Ascorbic acid is reactive and can become harmful at megadose levels, especially as a supplement isolated from ancestral food patterns.
• The body’s main antioxidant defense comes from glutathione, superoxide dismutase, catalase, and other stable systems.
• Meat supplies sulfur amino acids such as methionine and cysteine, which support glutathione production.
• Ketogenic and carnivore-style eating are linked here to higher glutathione and lower oxidative burden.
• High glucose drives damaging pathways such as polyol flux, AGEs, PKC activation, and hexosamine metabolism.
• Glycation damages collagen and elastin, which connects excess sugar to visible aging and tissue breakdown.

Collagen, immunity, brain function, and food choice

• Vitamin C is still needed for collagen synthesis, but the needed form can come through DHAA from animal foods.
• Collagen supplements break down into amino acids, so the body still has to rebuild collagen using vitamin C-dependent chemistry.
• Glycine, lysine, and NAC support collagen and glutathione more directly than trusting random collagen powders.
• DHAA also fits immune defense, heart and lung function, brain protection, and mitochondrial protection.
• Modern fruit is depleted and picked unripe, while fresh meat provides a more bioavailable vitamin C route through DHAA.
• The practical answer is fresh animal food, not orange juice, fortified flour, or high-dose ascorbic acid.

References

• [01:58] Cloning and chromosomal mapping of the human nonfunctional gene for L-gulono-gamma-lactone oxidase, the enzyme for L-ascorbic acid biosynthesis missing in man. — https://doi.org/10.1016/S0021-9258(17)36884-9
• [04:24] Glucose Transporter Isoforms GLUT1 and GLUT3 Transport Dehydroascorbic Acid — https://doi.org/10.1074/jbc.272.30.18982
• [05:02] Vitamin C Crosses the Blood–Brain Barrier in the Oxidized Form Through the Glucose Transporters — https://doi.org/10.1172/JCI119832
• [05:02] Vitamin C Enters Mitochondria via Facilitative Glucose Transporter 1 (Glut1) and Confers Mitochondrial Protection Against Oxidative Injury — https://doi.org/10.1096/fj.05-4107com
• [07:10] L-Dehydroascorbic Acid Can Substitute L-Ascorbic Acid as Dietary Vitamin C Source in Guinea Pigs — https://doi.org/10.1016/j.redox.2015.11.003
• [11:40] Sailors’ Scurvy Before and After James Lind — A Reassessment — https://doi.org/10.1111/j.1753-4887.2009.00205.x
• [12:47] Intestinal Dehydroascorbic Acid (DHA) Transport Mediated by the Facilitative Sugar Transporters, GLUT2 and GLUT8 — https://doi.org/10.1074/jbc.M112.436790
• [13:16] Vitamin C Exhibits Pro-Oxidant Properties — https://doi.org/10.1038/33308
• [14:29] The Ketogenic Diet Increases Mitochondrial Glutathione Levels — https://doi.org/10.1111/j.1471-4159.2008.05460.x
• [15:07] Oxidative Stress and Diabetic Complications — https://doi.org/10.1161/CIRCRESAHA.110.223545
• [18:00] Vitamin C and Immune Function — https://doi.org/10.3390/nu9111211
• [19:07] Ascorbic Acid and Connective Tissue — https://doi.org/10.1007/978-1-4613-0325-1_13