Summary
The carnivore diet — an eating pattern consisting almost entirely of animal products like meat, fish, eggs, and dairy, with all plant foods eliminated — has surged in popularity in recent years, with proponents claiming dramatic benefits for weight loss, inflammation, autoimmune conditions, and metabolic health. But how much of that is backed by solid science? This 2026 scoping review by German researchers at the University of Applied Sciences Muenster set out to systematically examine all available human research on the carnivore diet and weigh its potential benefits against its risks.
Following rigorous scientific guidelines (PRISMA), the researchers searched four major academic databases in November 2025. Out of all available literature, only nine human studies met the inclusion criteria — five case studies, two surveys, one modeling study, and one exploratory study. Notably, none of the studies were randomized controlled trials, and none tracked long-term outcomes.
Potential benefits reported:
- Weight loss was the most consistently reported benefit across studies.
- Increased satiety — participants generally felt fuller on the diet, likely due to high protein intake.
- Some studies reported improvements in inflammatory and metabolic markers, though the evidence was limited and largely anecdotal or observational.
Identified risks:
- Nutrient deficiencies are a significant concern, particularly in vitamins C and D, calcium, magnesium, iodine, and dietary fiber — all of which are primarily or exclusively found in plant foods.
- Elevated LDL and total cholesterol levels were observed, raising concerns about long term cardiovascular health.
- The complete elimination of plant foods means no intake of phytochemicals — the thousands of health-promoting compounds found in fruits, vegetables, and whole grains that are associated with reduced cancer and disease risk.
While the carnivore diet may offer some short-term benefits, the current evidence is extremely limited in quality and quantity. The authors conclude that long-term adherence to a carnivore diet cannot be recommended given the substantial risks of nutrient deficiencies and cardiovascular disease, and that far more rigorous, long-term research is needed before any confident conclusions can be drawn.
PMCID: PMC12845189