Carnivore Diet Guide: What to Eat at Restaurants

Historical Background and Evolution of the Diet

The idea of an exclusively animal diet has a long, scattered history, tracing as far back as an 1856 book by German writer Bernard Moncriff that argued for an entirely animal based way of eating, and later drawing on early twentieth century case studies of arctic explorer Vilhjalmur Stefansson, who documented extended meat only eating among Inuit populations and in his own personal experiments conducted under medical observation at the time.

The diet's modern popularity, however, is a distinctly recent, internet driven phenomenon dating mainly to around 2018, when former orthopedic surgeon Shawn Baker published The Carnivore Diet and became one of its most visible advocates online, joined soon after by psychologist Jordan Peterson and his daughter Mikhaila, whose widely shared account of using an elimination diet and later a strict meat only approach to manage juvenile rheumatoid arthritis and depression brought considerable mainstream attention to the diet for the first time.^[1]

Baker's own professional history is worth noting factually given his prominence as the diet's leading medical voice: in 2017, the New Mexico Medical Board accepted his voluntary surrender of his medical license, citing incompetence to practice as a licensee and a failure to report an adverse action taken against him by a healthcare entity, according to the board's own official record. Baker disputes the board's characterization of events but confirms the outcome itself, and he regained his license in 2019, though he has said publicly he does not intend to return to surgical practice going forward.^[1]

Since 2018, the diet has continued spreading primarily through podcasts, social media, and online communities that often explicitly frame it in direct opposition to mainstream nutrition guidance, a positioning that has helped fuel its visibility considerably even as formal clinical research on the approach has remained genuinely sparse throughout this same period of growing popularity.

Nutritional Principles and Macronutrient Breakdown

There is no fixed macronutrient target beyond the diet's defining rule: animal source foods only, with essentially zero carbohydrate intake by design, since virtually every carbohydrate source in a typical diet comes from plants the protocol excludes entirely from a person's daily eating pattern.

Foods that are recommended or included

The stricter end of the spectrum

Foods excluded entirely

• Red meat, organ meats, poultry, and fish
• Eggs, and in less strict versions, some dairy and butter
• Bone marrow and rendered animal fats, favored by some followers specifically
• Some followers adopt an even narrower version, sometimes called the lion diet, limited strictly to beef, salt, and water alone, with no other food or beverage permitted
• All plant foods, including vegetables, fruit, grains, legumes, nuts, and seeds
• By extension, virtually all dietary fiber, since almost no fiber exists in animal source foods

Physiological and Metabolic Mechanism

With carbohydrate intake at or near zero, the body shifts toward burning fat for fuel and producing ketones, a metabolic state similar to what a ketogenic diet targets, though carnivore goes considerably further by eliminating an entire category of food, all plants, rather than simply restricting carbohydrate rich foods specifically while still allowing vegetables and other plant based ingredients.

Proponents theorize that removing plant compounds like lectins, oxalates, and phytates reduces gut irritation and inflammation for people sensitive to them, improving nutrient absorption from the animal foods that remain, though this specific mechanism rests mostly on theory and anecdote rather than direct experimental confirmation in controlled research settings designed specifically to test it.

The complete absence of dietary fiber represents perhaps the most significant mechanistic departure from nearly every other diet covered in this series: without fiber reaching the colon, the short chain fatty acid production and gut bacterial fermentation process described in detail in the High Fiber entry simply does not occur, removing an entire pathway other diets rely on for several of their documented benefits and leaving the carnivore diet without any comparable mechanism in its place.

This absence of fiber also means the diet operates through an essentially different digestive rhythm than almost any other pattern covered elsewhere in this series, one built entirely around protein and fat digestion without the bulk, fermentation, and microbial activity that dietary fiber normally provides throughout the entire length of the digestive tract.

Proven Health and Medical Benefits

The largest available dataset on the diet comes from a 2021 survey of 2,029 self-identified carnivore dieters, in which 95 percent reported experiencing health improvements and high satisfaction with the approach after a median of 14 months following it. Among the subset who reported current lipid values, HDL cholesterol and triglycerides were both described as optimal, a genuinely encouraging finding on those two specific measures alone.^[2]

This same survey, however, is a self-selected, anonymous, self-reported dataset rather than a controlled clinical trial, a real methodological limitation that makes it impossible to rule out selection bias, since people who felt worse on the diet may have been less likely to complete or share the survey in the first place, skewing the results toward more satisfied respondents specifically.

A recent scoping review of the available literature concluded directly that current scientific evidence on the carnivore diet remains limited, and that no systematic data currently exists regarding either the short term or long term health effects of following it, a genuinely honest summary of where the research actually stands today rather than where popular enthusiasm and online testimonials might otherwise suggest it stands.^[3]

No major medical or nutrition body currently recommends the carnivore diet for any diagnosed condition specifically, and it remains well outside mainstream clinical guidance, even as individual practitioners occasionally recommend elements of it on a case by case basis for specific patients dealing with particular symptoms or conditions.

The gap between the diet's enthusiastic online following and its actual research base is genuinely wide, wider in fact than for most other diets covered elsewhere in this series, a distinction worth keeping firmly in mind when evaluating any specific claim made on its behalf.

Drawbacks, Health Risks, and Criticism

The same 2021 survey that found high subjective satisfaction also found markedly elevated LDL cholesterol among participants, averaging 172 mg/dL, a genuine and measured finding rather than a theoretical concern, and one that matters given how consistently LDL cholesterol is linked to cardiovascular disease risk in the broader research literature covering the general population.^[2]

Separate research not specific to this diet has found that higher red meat consumption in general is associated with meaningfully increased cardiovascular risk, including one large cohort study linking high red meat intake to a 20 percent higher risk of cardiovascular disease and more than double the risk of stroke related mortality, though it is worth noting these studies generally examine red meat within otherwise varied diets rather than the carnivore diet's specific, exclusively animal based pattern tested directly.^[4]

The complete elimination of dietary fiber removes a well documented protective factor: broader research has found high fiber intake associated with meaningfully lower overall cancer risk, including a significant protective effect specifically against colorectal cancer, benefits the carnivore diet's design forgoes entirely by removing fiber from the diet altogether rather than simply reducing it to a lower, more moderate level.^[4]

Nutrient deficiency risk is a further, genuine concern specifically named in reviews of the diet, particularly for vitamin C, vitamin D, calcium, magnesium, and iodine, nutrients concentrated in plant foods and fortified products the diet excludes by design rather than by any individual food choice a person makes on their own.

Given how recently the diet gained widespread popularity, its long-term safety over years or decades remains essentially unknown, a genuine and honest limitation rather than a settled question either for or against the approach at this particular point in its relatively short history.

Adherence itself presents a further practical challenge beyond the medical considerations already discussed, since eliminating every plant food from a person's diet indefinitely requires substantial planning around social situations, travel, and shared meals that most other diets covered elsewhere in this series do not demand to nearly the same degree of effort or advance preparation.

Environmental, Economic, and Cultural Aspects

Because the diet consists entirely of animal source foods, it almost certainly carries one of the highest environmental footprints of any diet covered in this series, consistent with food emissions research that consistently ranks meat, red meat especially, as the single most resource intensive major food category measured, whether assessed by land use, water use, or greenhouse gas output per calorie produced.^[4]

Economically, sustaining an entirely meat based diet can be genuinely expensive depending on the specific cuts chosen, though some practitioners note that incorporating organ meats and less popular cuts, rather than relying exclusively on premium muscle meat, can meaningfully reduce the overall cost compared with a diet built around steak alone, a distinction worth keeping in mind for anyone budgeting for this way of eating.

A Day in This Diet

• Breakfast: scrambled eggs with bacon.
• Lunch: a grilled steak with a side of sardines.
• Snack: hard boiled eggs, or beef jerky without added sugar.
• Dinner: roasted chicken thighs with beef liver.
• Dessert: not typically included, since the diet excludes essentially all plant based ingredients used in most desserts.

Who It's Best Suited For — and Who Should Use Caution

Best suited for people specifically interested in a highly structured elimination approach who are prepared to closely monitor their bloodwork, particularly LDL cholesterol, throughout the process.

Caution applies broadly given the limited research base: anyone considering this diet should involve a doctor to monitor lipid levels and nutrient status, and anyone with existing cardiovascular risk factors or a family history of heart disease should approach the diet with particular care given its documented effect on LDL cholesterol specifically.

Related Diets

Closely related to Keto, which shares its very low carbohydrate mechanism but permits plant foods, and worth comparing with Paleo, a considerably less restrictive ancestral eating pattern that includes fruits and vegetables the carnivore diet excludes entirely.

Compare Carnivore to similar diets: High Protein and Muscle Preservation →