Carnivore Diet: Weight Loss, Food List, All Meat Risks (2024)

The carnivore diet is a fad diet focused on consuming only animal products and byproducts (e.g., dairy), resulting in fewer blood sugar spikes. In a study of this diet, participants reported seeing improvements in overall health, well-being, certain medical conditions, and average body mass index (BMI).

However, a diet primarily comprised of meat and animal-based foods comes with risks. These foods are high in saturated fat, which can raise your low-density lipoprotein (LDL) or "bad" cholesterol and increase your risk of heart attack or stroke. Consuming only animal and animal byproducts limits your intake of essential nutrients, especially vitamins, minerals, and fiber for your overall health.

In this article, you will learn some of the potential benefits and risks of the carnivore diet compared to a traditional well-balanced diet.

Carnivore Diet: Weight Loss, Food List, All Meat Risks (1)

Besides Protein, What Are the Benefits of the Carnivore Diet?

There is limited research on the carnivore diet. The most significant study to date was conducted in 2021 by Harvard researchers. They interviewed 2,029 people who were on the diet for at least six months. Their reasons for adopting this diet included the following:

  • Weight loss
  • Focus and energy
  • Allergy or autoimmunity
  • Digestive health
  • Athletic performance
  • Mental health
  • Diabetes

Self-reported changes in health status included improvements in overall health, sleep, focus, energy, and mental clarity.

Participants also reported improvement in or resolution of the following chronic conditions:

  • Diabetes or insulin resistance
  • Intestinal conditions
  • High blood pressure
  • Skin or autoimmune conditions
  • Cardiovascular issues

The results of this study have one major limitation: self-reported data is unreliable. The study did not employ an independent interviewer or use health records to verify the health status of study participants.

Though many people report a substantial improvement in their health while on the carnivore diet, more rigorous studies are necessary.

What to Eat While on a Carnivore Diet

As the name suggests, a carnivore diet means eating primarily meat and animal products and avoiding all other foods. The diet's primary goal is weight loss by consuming minimal daily carbohydrates.

Noncompliant Foods

  • Fruits

  • Vegetables

  • Legumes

  • Grains

  • Nuts

  • Seeds

  • Starchy vegetables

Foods to Avoid on the Carnivore Diet

People who follow the carnivore diet avoid fruits, vegetables, nuts, seeds, and legumes. Here's why:

  • Fruits and vegetables: These foods are high in fiber, vitamins, and minerals. However, they also have a higher glycemic index (GI), significantly impacting blood sugar for those with prediabetes and diabetes. For instance, watermelon, pineapple, and potatoes have a high GI.
  • Nuts, seeds, and legumes: Almonds, hazelnuts, peanuts, sunflower seeds, pinto beans, black beans, and garbanzo beans are examples of nuts, seeds, and legumes. Compared to fruits and vegetables, these foods are high in protein and fats and low in carbohydrates.

The goal of a carnivore diet is to eat only animal products (or byproducts such as dairy) and little to no carbohydrates, so the food groups listed are not recommended.

Who Shouldn't Do a Carnivore Diet

Talk to a healthcare provider before beginning any fad diet. Many people try the carnivore diet to lose weight or improve their health. However, if you have certain chronic conditions, consider the health impact of consuming only animal products before changing your diet. People with the following conditions should avoid the carnivore diet:

  • High blood pressure (hypertension)
  • High cholesterol (hyperlipidemia)
  • Any history of cardiovascular disease
  • Obesity (a BMI of above 40) alongside other conditions (comorbidities)

Eating a great deal of meat high in saturated fat can increase bad (LDL) cholesterol, putting you at a higher risk of heart disease. Consuming too many processed foods, such as bacon, sausage, or high-sodium lunch meats, can cause kidney problems and high blood pressure.

Constipation Risk

The primary source of dietary fiber is carbohydrates, such as fruits, vegetables, and grains. The carnivore diet provides little to no fiber, increasing the risk of constipation. Fiber encourages regular bowel movements and helps create good bacteria in the gut. Quality gut health helps support a healthy immune system.

Carnivore Diet vs. Well-Balanced Diet

A carnivore diet is very restrictive because you only eat from one food group. For optimal health, consider a well-balanced diet. This means eating foods from every food group to provide complete nutrition from various sources.

A well-balanced diet includes various macro- and micronutrients, such as protein, carbohydrates, fats, fiber, vitamins, minerals, and water. The following foods contribute to a well-balanced diet:

  • Fruits, vegetables, whole grains
  • Low-fat dairy products
  • Protein from multiple sources, including lean red meats, poultry, eggs, beans, nuts, and seeds
  • Foods low in sugar, sodium, saturated fats, trans fats, and cholesterol

Summary

A carnivore diet only allows foods from animal sources. Most people who try the carnivore diet want to lose weight or manage chronic conditions. However, there is limited research on the health benefits of a carnivore diet. The carnivore diet can be risky, especially for people with high blood pressure, high cholesterol, and a history of heart disease. The lack of fiber can also cause constipation and poor gut health.

Consult a healthcare provider, such as a registered dietitian, before starting a carnivore diet. Follow a well-balanced diet to support your overall health.

8 Sources

Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.

  1. Lennerz BS, Mey JT, Henn OH, Ludwig DS. Behavioral characteristics and self-reported health status among 2029 adults consuming a carnivore diet.Current Developments in Nutrition. 2021. doi: 10.1093/cdn/nzab133

  2. American Heart Association. Saturated fat.

  3. Kirwan R, Mallett GS, Ellis L, Flanagan A. Limitations of self-reported health status and metabolic markers among adults consuming a carnivore diet.Curr Dev Nutr. 2022;6(5):nzac037. doi:10.1093/cdn/nzac037

  4. Carnivore.diet. Carnivore diet health benefits.

  5. MedlinePlus. Glycemic index and diabetes.

  6. MedlinePlus. Protein in diet.

  7. Harvard Center for Health and the Global Environment. The carnivore diet risks and side effects.

  8. Centers for Disease Control and Prevention. Healthy eating for a healthy weight.

Carnivore Diet: Weight Loss, Food List, All Meat Risks (2)

By Carisa Brewster
Carisa D. Brewster is a freelance journalist with over 20 years of experience writing for newspapers, magazines, and digital publications. She specializes in science and healthcare content.

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Carnivore Diet: Weight Loss, Food List, All Meat Risks (2024)

FAQs

What are the risks of the meat only diet? ›

“The carnivore diet can increase the risk of disease because it is an acidic diet that is high in sodium that lacks in key nutrients responsible for optimal health,” Rydyger says. “The diet can also be high in saturated fat and LDL cholesterol.

What happens to your body on an all meat diet? ›

Health impacts from eating only meat

Two of the biggest issues are a lack of fibre and carbohydrates, Virjee explained, which can lead to constipation, a common side effect of the diet. Fibre also helps keep our immune systems strong by diversifying our gut microbiome, which can help with digestion.

What are the negatives of the carnivore diet? ›

High in fat, cholesterol, and sodium

Given that the carnivore diet consists solely of animal foods, it can be high in saturated fat and cholesterol. Saturated fat may raise your LDL (bad) cholesterol, which may increase your risk of heart disease ( 13 ).

Is carnivore diet bad for your heart? ›

In a 2012 study published in the Archives of Internal Medicine, Harvard researchers found that of more than 100,000 men and women, "People in the study who ate the most red meat tended to die younger, and to die more often from cardiovascular disease and cancer," according to Harvard Health Publishing.

Can I drink coffee on carnivore diet? ›

Yes, you can drink coffee on a carnivore diet. Despite its plant origin, many followers of the carnivore diet still consume coffee, considering caffeine's stimulating properties. However, caution must be taken as excessive intake of caffeine may add stress to the body's metabolism and disrupt sleep patterns.

What is the healthiest diet in the world? ›

Mediterranean Diet, DASH Diet, and MIND Diets Are the Best Diets of 2024. All three diets are highly recommended by doctors because of their known health benefits. “The Mediterranean eating plan doesn't have a set calorie range or portion guidelines, which is why it can fit almost anyone's needs.

What happens if you only eat protein and no carbs? ›

Some high-protein diets limit carbs so much that you might not get enough nutrients or fiber. This can cause problems such as bad breath, headache and constipation. Some high-protein diets allow red meats, processed meats and other foods high in saturated fat. These foods may increase your risk of heart disease.

Is carnivore diet actually healthy? ›

Following the Carnivore diet long-term could increase your risk for a number of serious health conditions, such as colorectal cancer and heart disease.

How long can you stay on carnivore diet? ›

While one person may be able to sustain a carnivore diet for months, or even years, without any health complications, that's certainly not going to be the case for everyone.

Is carnivore diet cancerous? ›

These heterocyclic amines require acetylation by P450 enzymes, and individuals with the fast-acetylating genotype who eat high amounts of meat may be at increased risk of large-bowel cancer. NH3 and N-nitroso compounds (NOC) formed from residues by bacteria in the large bowel and probably also important.

Why can't you lose weight on a carnivore diet? ›

It could be as simple as time - you haven't been on the diet long enough. Or, maybe you're still in caloric surplus despite eating the right foods. It could even be that you're not drinking enough water, you're constipated from the new diet, you're stressed out - or some other unrelated cause.

Is cheese allowed on carnivore diet? ›

Yes, you can eat cheese while on a carnivore diet. Cheese is a dairy product and contains both protein and fat, so it can be included in a carnivore diet. However, you should eat cheese in moderation because it is high in calories and can contribute to weight gain.

What is the healthiest meat for your heart? ›

Options include:
  • Seafood — fish and shellfish.
  • Poultry — chicken or turkey breast without skin or lean ground chicken or turkey (at least 93% lean)
  • Lean meats — like pork shoulder, beef sirloin, or lean ground beef (at least 93% lean)
  • Beans, peas, and lentils — like black beans and garbanzo beans (chickpeas)
  • Eggs.
Jul 1, 2023

What does carnivore diet do to blood pressure? ›

“I often see people with high blood pressure who are on medication that start these diets. Their blood pressure starts to get low, and their medication needs to be adjusted.” Dr. Ovadia adds that people on the carnivore diet tend to have fewer bowel movements, but this is not usually accompanied by constipation.

Is carnivore diet bad for gut health? ›

Impact on gut health: The lack of dietary fiber may negatively affect the gut microbiome, potentially leading to constipation and other digestive issues.

What are the pros and cons of a meat diet? ›

On a carnivore diet, you're guaranteed to consume plenty of protein, which may serve as insurance against health issues like poor muscle tone, a weakened immune system, and a higher risk of bone fractures. However, this comes at a cost of under-consuming the other two macronutrients: carbohydrates and fats.

What are the benefits and risks of eating a meat free diet? ›

Following a vegetarian diet may reduce the risk of heart disease, diabetes and some cancers. But some vegetarian diets may rely too heavily on processed foods with too many calories, and too much sugar, fat and salt. These diets may not include enough fruits, vegetables, whole grains and nutrient-rich foods.

Are there benefits to a meat only diet? ›

Meat contains nutrients that help brain function, such as B12, Zinc, and iron. Many claim their mental health improved while on the diet (but there's no research yet to support this). Without blood sugar crashes, your energy and mental stamina will improve.

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