The Claim

High intake of saturated fat may impair insulin sensitivity and promote hepatic fat accumulation, and when combined with high protein intake, may stimulate gluconeogenesis sufficiently to elevate blood glucose levels in susceptible individuals.

Source: Layne Norton Warns: The Carnivore Diet Causes Diabetes

What the research says

Challenges is higher

Challenge is ahead, but a single strong supporting study can change this.

Supports
58score
Challenges
72score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
3 studies reviewed
In plain English

Eating a lot of saturated fat might make your body less responsive to insulin and cause fat to build up in your liver. If you also eat a lot of protein, it could push your body to make more sugar, which might raise your blood sugar—especially if you're prone to it.

See the scientific wording

High intake of saturated fat may impair insulin sensitivity and promote hepatic fat accumulation, and when combined with high protein intake, may stimulate gluconeogenesis sufficiently to elevate blood glucose levels in susceptible individuals.

What the research says

3 studies
  1. Study: Diets high in protein or saturated fat do not affect insulin sensitivity or plasma concentrations of lipids and lipoproteins in overweight and obese adults.

    The study looked at high fat and high protein diets in overweight people and found they didn’t worsen insulin sensitivity or blood fats. It did see a small rise in fasting blood sugar with more protein, but overall, the results don’t support the idea that these diets harm blood sugar control in most people.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 3 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.