Overview
The Carnivore Diet consists exclusively of animal products — meat, fish, eggs and select dairy — and eliminates all plant foods. It gained mainstream attention through Dr. Shawn Baker's 2018 book and has since built a large community of followers who report improvements in autoimmune symptoms, digestion, mental clarity and body composition.
The diet works as the most extreme elimination diet possible: by removing every plant compound at once (fibre, lectins, oxalates, phytates, salicylates), people with undiagnosed food sensitivities often experience rapid relief. It is inherently ketogenic, since animal products contain virtually zero carbohydrates.
What the science says
- No large-scale randomised controlled trials exist for the carnivore diet specifically; evidence is primarily from case studies, surveys and clinical observation.
- A 2021 Harvard survey of 2,029 carnivore dieters found that 95 % reported improved overall health, 93 % improved body composition and 66 % reported resolution of a chronic health condition.
- Nutrient density per calorie is high: beef liver alone provides over 100 % of the RDA for vitamins A, B12, riboflavin, copper and iron.
- Concerns about fibre are mitigated by studies showing that fibre reduction can improve constipation and bloating in some people (2012 World Journal of Gastroenterology).
- LDL cholesterol often rises on carnivore; whether this matters in the context of low inflammation and low triglycerides is debated.
Organ meats (liver, heart, kidney) are nutritional powerhouses. Eating them 2–3 times a week covers most micronutrient needs without supplements.
What to eat
- Ruminant meats — beef (especially fatty cuts: ribeye, chuck, ground beef), lamb, bison, venison.
- Organ meats — liver (most nutrient-dense food on earth), heart, kidney, bone marrow.
- Poultry — chicken thighs, turkey, duck.
- Fish and seafood — salmon, sardines, mackerel, shrimp, oysters (rich in zinc).
- Eggs — whole eggs; a complete protein with almost every essential vitamin except C.
- Animal fats — tallow, lard, butter, ghee, duck fat.
- Dairy (if tolerated) — hard aged cheeses, heavy cream, sour cream.
What's completely off the table
- All fruits and vegetables — no exceptions.
- All grains, legumes, nuts and seeds.
- All plant oils — olive oil, coconut oil, seed oils.
- Sugar, sweeteners and condiments that contain plant ingredients (ketchup, most sauces).
- Processed foods of any kind — if it has an ingredient list longer than one item, skip it.
Tips for success
- Eat fatty cuts — lean meat alone won't provide enough energy; aim for at least 60–70 % of calories from fat.
- Salt generously, especially in the first 2 weeks, as your body sheds water and electrolytes.
- Drink water and bone broth; black coffee is technically plant-based but most carnivore followers keep it.
- Include organ meats regularly — they're the closest thing to a multivitamin on this diet.
- Transition gradually if coming from a high-carb diet: start by eliminating plants over 1–2 weeks rather than overnight.
Who it's best for
- People with unresolved autoimmune or inflammatory conditions who've tried other elimination diets.
- Those with severe IBS, SIBO or food sensitivities who want a clean baseline.
- Anyone curious about how they feel on zero plant foods — a 30-day trial is a common starting point.
- People who prefer simple eating rules: just eat meat.
This guide is general information, not medical advice. Talk to a doctor or registered dietitian before you change how you eat, especially if you’re pregnant, take medication or manage a health condition.
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