Nutrient profile
Fat is your friend — why the right fat counts
Energy, hormones, membranes, fat-soluble vitamins, and satiety — why animal fat is central on carnivore and animal-based plates, and how sources differ.
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Auf einen Blick
- On a very low-carb diet, fat is the primary energy currency. Lean meat alone often is not enough.
- Fat is more than calories: hormones, cell membranes, fat-soluble vitamins, satiety.
- Sources, processing, and fatty-acid profile differ.
- Fear of saturated fat and cholesterol is often overdone in practice. It still has to be contextualized individually.
Why this topic is even controversial
For decades, fat — especially saturated fat from animals — was the central villain. The message: fat makes you fat and clogs arteries. In carnivore and animal-based practice the priority flips. Fat becomes the load-bearing column.
That follows from the physiology of eating with very little carbohydrate, or none. Without enough fat, energy need stays unmet, or the protein load gets so high that it is impractical and potentially a problem.
Energy: the primary currency on low carb
Carbohydrate and fat are the two large energy substrates. Under strict carbohydrate restriction, fat takes the main share. Protein can be converted into glucose in part (gluconeogenesis). As the sole energy source that is inefficient and expensive — metabolically and in practice.
Described historically and clinically: “rabbit starvation,” or protein poisoning. Extremely lean food without fat leads to nausea, weakness, diarrhea, and an inability to cover energy need with protein alone. Not an argument against protein. An argument against protein without fat as a standing strategy. A steak with visible fat, tallow in the pan, egg yolks, butter, or cream (if tolerated) are not garnish.
More than calories: structural and regulatory roles
Cholesterol and fatty acids are starting material for steroid hormones (testosterone, estrogen, cortisol, vitamin-D metabolites, among others). Chronically extremely low fat can matter here — especially under a heavy training load or stressful stretches.
Cell membranes, absorption of fat-soluble vitamins, and satiety signals also hang on fat. Anyone who eats lean for a long stretch and then wonders why hunger, energy, or hormones are off often has the problem right here.
Practice
Eat the visible fat. Tallow, butter, or ghee in the pan. Do not skip the yolks. On animal-based: cream or cheese in measured amounts if tolerated.
If you stay flat and hungry, you often left the fat on the board. More protein alone rarely fixes it. Steer the protein-to-fat ratio on purpose — do not chase the leanest filet.
Further reading
Sources
- Classic observations of 'rabbit starvation' / protein toxicity on extremely lean diets
- O’Neill & Raggi 2020 – ketogenic diets and the lipoprotein profile (PMID 31802496)
- Discourse on saturated fat and cardiovascular risk — mixed and contested evidence
This content is general information. It is not medical, dietetic, or diagnostic advice. This article contains affiliate links (ad). Details: Transparency.
