The carnivore diet represents an extreme iteration of ketogenic eating. No vegetables, no fruits, no grains. The most stringent version, the Lion Diet, consists of nothing more than red meat, water and salt. While experts have long been skeptical, a recent review from the University of Applied Sciences Muenster reveals the results are surprisingly nuanced.
The Promise: Why People Feel Better (Temporarily)
Studies analyzed demonstrate that adherents often report positive short-term effects. Key findings include:
- Weight Loss and Satiety: High protein and fat intake quickly suppresses hunger. Weight loss often occurs as the body enters a deep state of ketosis.
- The ‘Elimination Effect’ : Individuals with chronic intestinal diseases or inflammation often experience relief. The theory suggests eliminating plants removes ‘antinutrients’ like lectins and phytates, to which some people are sensitive.
- Blood Values in the Ill: Blood sugar levels (HbA1c) and triglycerides improved in people with existing metabolic diseases.
The Downside: Hidden Deficiencies
Despite short-term benefits, the research raises concerns for the long term. Eliminating all plants means missing essential nutrients meat simply cannot provide:
- Vitamins and Minerals: The research confirms a meat diet almost always leads to low levels of vitamin C, E, folate, magnesium, and iodine. A lack of vitamin C is particularly risky, as it’s essential for the immune system and connective tissue.
- The Cholesterol Surge: This may be the biggest risk. LDL cholesterol (the ‘bad’ cholesterol) and total cholesterol levels increased significantly in healthy participants. The research warns this substantially increases the risk of cardiovascular disease long-term.
- A Gut Flora Without Fuel: With less than 1 gram of fiber per day, the gut microbiome suffers. Good bacteria necessitate fiber to survive. Without it, the intestinal wall can become more vulnerable.
Meat from Grass-Fed Animals vs. Factory Farming
The research offers nuance: not all meat is equal. Participants choosing meat from grass-fed animals had a more favorable omega 3 fatty acid profile. Eating organ meats (like liver) helped address some vitamin deficiencies, though researchers caution against excess vitamin A (retinol).
The Verdict
The scientists are firm in their conclusion: the carnivore diet is not recommended as a healthy lifestyle for the long term.
While it may have an effect as a temporary ‘reset’ or extreme elimination diet for people with severe intestinal problems, the risks of heart disease and serious nutritional deficiencies are too great. The lack of antioxidants and fiber means the body depletes itself over time.
What can you do? If your current diet isn’t working, consider a less extreme approach. Start by eliminating processed foods and sugars before switching to a diet that eliminates your primary source of vitamins.
University of Applied Sciences Muenster Canva
