Have you ever considered trying the carnivore diet? While it may sound enticing for meat lovers, it’s important to be aware of its potential side effects. From an increased risk of nutrient deficiencies to digestive issues, this article explores the potential drawbacks of the carnivore diet. By understanding these side effects, you can make an informed decision about whether this diet is right for you.

Digestive Issues


One potential side effect of the carnivore diet is constipation. Since the diet is primarily focused on consuming animal products and excludes any form of plant-based fiber, you may experience a decrease in bowel movements and difficulty passing stools. Fiber plays a crucial role in maintaining regular bowel movements and preventing constipation, so the absence of fiber in the carnivore diet can lead to this issue.


On the other hand, some individuals may experience the opposite problem – diarrhea. This can occur when the carnivore diet causes a sudden shift in the gut microbiome, leading to digestive disturbances. The rapid change in dietary habits, specifically the exclusion of carbohydrates and increased intake of fat and protein, can disrupt the normal balance of bacteria in the gut and result in loose stools and diarrhea.

Gut Microbiome Imbalance

The gut microbiome refers to the community of microorganisms that reside in our digestive system and play a crucial role in our overall health. Unfortunately, the carnivore diet can cause a disruption in the balance of gut bacteria due to the exclusion of plant-based foods that promote a diverse microbiome. This imbalance in the gut microbiome can lead to various digestive issues, including constipation and diarrhea, as mentioned previously.

Nutrient Deficiencies

Vitamin C

One of the potential nutrient deficiencies associated with the carnivore diet is a lack of vitamin C. Fruits and vegetables are well-known sources of this essential vitamin, and by eliminating these plant-based foods from your diet, you may not be obtaining adequate amounts of vitamin C. Vitamin C is essential for collagen synthesis, immune function, and antioxidant activity, so a deficiency can have a significant impact on your overall health.


The carnivore diet is significantly lacking in dietary fiber since it excludes all forms of plant-based foods. Fiber is crucial for maintaining a healthy digestive system, promoting regular bowel movements, and preventing constipation. Additionally, dietary fiber aids in reducing the risk of certain chronic conditions such as heart disease, diabetes, and certain types of cancer. Therefore, the lack of fiber in the carnivore diet can lead to various health issues and nutrient deficiencies.


Another nutrient that may be deficient in the carnivore diet is potassium. Potassium is essential for maintaining proper fluid balance, regulating blood pressure, and supporting muscle and nerve function. Plant-based foods, such as bananas, avocados, and sweet potatoes, are excellent sources of potassium. By eliminating these foods from your diet, you may not be getting enough potassium, which can lead to imbalances and negatively impact your health.

Increased Risk of Heart Disease

High Cholesterol Levels

Due to the high intake of animal products and saturated fats in the carnivore diet, there is a potential risk of elevated cholesterol levels. Saturated fats, found in animal products such as red meat, butter, and cheese, can increase levels of LDL (bad) cholesterol, which is associated with an increased risk of heart disease.

Increased Inflammation

Research suggests that consuming a diet high in animal products and low in plant-based foods can promote inflammation in the body. Chronic inflammation has been linked to various health conditions, including heart disease. In contrast, plant-based foods are rich in antioxidants and anti-inflammatory compounds that can help reduce inflammation and protect against chronic diseases.

Limited Antioxidant Intake

The carnivore diet, which excludes plant-based foods known for their rich antioxidant content, may result in a limited intake of these essential compounds. Antioxidants play a crucial role in neutralizing harmful free radicals in the body, protecting cells from damage, and reducing the risk of chronic diseases. Without a diverse range of plant-based foods in your diet, you may be missing out on important antioxidants and their associated health benefits.

Exploring the Potential Side Effects of the Carnivore Diet

Impaired Liver Function

Higher Saturated Fat Intake

The consumption of a high amount of saturated fats from animal products in the carnivore diet can potentially impair liver function. Saturated fats have been linked to an increased risk of fatty liver disease, where excessive fat accumulates in the liver. Over time, this can lead to inflammation and damage to liver cells, compromising liver function.

Elevated Liver Enzymes

Research has shown that individuals following a high-fat, low-carbohydrate diet, similar to the carnivore diet, may experience elevated levels of liver enzymes in their blood. Elevated liver enzymes are often an indicator of liver damage or inflammation. Therefore, the carnivore diet’s reliance on high-fat animal products may pose a risk to liver health and function.

Kidney Problems

Increased Protein Load

The carnivore diet is characterized by its high intake of protein, mainly from animal sources. This can lead to an increased protein load on the kidneys, potentially compromising kidney function. The kidneys play a vital role in filtering waste products and maintaining fluid balance. Excess protein consumption can put strain on the kidneys and may increase the risk of developing kidney problems over time.

Risk of Kidney Stones

Another potential concern associated with a high-protein diet like the carnivore diet is an increased risk of kidney stones. Animal protein, particularly from red meat, is rich in purines, which are metabolized into uric acid. High levels of uric acid in the urine can contribute to the formation of kidney stones. Additionally, a diet low in fruits and vegetables, which are alkaline, can further increase the risk of developing kidney stones.

Bone Health Concerns

Calcium Deficiency

Calcium is crucial for maintaining strong and healthy bones. While dairy products are allowed on the carnivore diet, the exclusion of plant-based sources of calcium, such as leafy green vegetables and fortified plant milks, may result in inadequate calcium intake. Prolonged calcium deficiency can lead to weakened bones, increase the risk of fractures, and contribute to conditions like osteoporosis.

Higher Acid Load

The carnivore diet, which is predominantly composed of animal products, can lead to a higher acid load in the body. Animal products are generally acidic, while plant-based foods tend to be more alkaline. A diet high in acidity can prompt your body to release calcium from your bones to neutralize the acid, potentially leading to a negative impact on bone health.

Lowered Energy Levels

Carbohydrate Withdrawal

Due to the exclusion of carbohydrates from the carnivore diet, some individuals may experience a period of carbohydrate withdrawal. Carbohydrates are the body’s primary source of energy, and abrupt removal of them from the diet can cause feelings of fatigue, weakness, and difficulty concentrating. This adjustment period can negatively affect your energy levels and overall well-being.

Decreased Exercise Performance

Carbohydrates are essential for fueling physical activity and exercise. By following the carnivore diet and cutting out carbohydrates, especially complex carbohydrates found in whole grains and starchy vegetables, you may experience a decline in exercise performance. Your body may not have enough readily available energy to sustain high-intensity workouts, potentially leading to decreased endurance and performance.

Disordered Eating Patterns

Restrictive Behavior

While the carnivore diet may be chosen for various reasons, such as weight loss or improved health, it can inadvertently lead to disordered eating patterns. The strict restrictions on food choices and the elimination of entire food groups can promote a black-and-white mindset where certain foods are labeled as “good” or “bad.” This restrictive behavior may contribute to an unhealthy relationship with food and the development of disordered eating tendencies.

Psychological Effects

Following an extremely limited diet like the carnivore diet can have psychological effects on individuals. The strict and rigid nature of the diet can lead to feelings of deprivation, social isolation, and increased anxiety around food choices. Over time, these psychological factors can negatively impact mental well-being and overall quality of life.

Impact on Gut Health

Reduced Diversity of Gut Bacteria

The carnivore diet, which eliminates plant-based foods known to nourish beneficial gut bacteria, can lead to a reduction in the diversity of the gut microbiome. A diverse and healthy gut microbiome is crucial for supporting digestion, nutrient absorption, and overall immune function. Imbalances and reduced diversity of gut bacteria have been associated with various health issues, including digestive disorders and weakened immune function.

Leaky Gut Syndrome

Leaky gut syndrome refers to a condition where the lining of the intestines becomes more permeable, allowing harmful substances to enter the bloodstream. The lack of dietary fiber and plant-based foods in the carnivore diet can contribute to the development of leaky gut syndrome. A healthy intake of fiber helps promote a healthy gut barrier function and reduces the risk of leaky gut. Without this protective effect, your gut health may be compromised.

Environmental Impact

Carbon Footprint

The carnivore diet, which heavily relies on animal products, can have a significant environmental impact in terms of carbon footprint. Animal agriculture is a major contributor to greenhouse gas emissions, including methane and carbon dioxide, which contribute to climate change. By consuming a diet that is predominantly composed of animal products, you may be inadvertently contributing to environmental degradation and global warming.


The production of animal products, such as beef, requires vast amounts of land for grazing and growing feed crops. This can lead to deforestation, where natural habitats are cleared to make room for agriculture. Deforestation contributes to the loss of biodiversity and disrupts fragile ecosystems. By following the carnivore diet, which promotes high consumption of animal products, you may indirectly contribute to the destruction of forests and their associated environmental consequences.

Animal Welfare

The carnivore diet’s heavy reliance on animal products raises concerns about animal welfare. The demand for meat and other animal products supports industries that may subject animals to inhumane treatment in factory farms or during the slaughtering process. By selecting a diet that prioritizes animal products, you may indirectly contribute to the suffering and mistreatment of animals.

In conclusion, while the carnivore diet may offer certain benefits for specific individuals, it is important to consider the potential side effects and health concerns associated with this highly restrictive eating pattern. From digestive issues like constipation and diarrhea to nutrient deficiencies and increased risks of heart disease and kidney problems, the carnivore diet poses potential risks to your overall health. Additionally, the impact on liver function, bone health, energy levels, gut health, and the environment cannot be overlooked. It is crucial to ensure a balanced and varied diet that includes a wide range of nutrient-dense foods to support optimal health and well-being. Consulting with a healthcare professional or registered dietitian can provide personalized guidance and ensure that your dietary choices align with your individual needs and goals.