If you eat a high-protein, no-carb diet for two days, your body starts making a lot of ketones — enough to be in ketosis. But if you eat carbs with the same protein, you don’t.

Pro

Against

Evidence from Studies

Supporting (1)

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Presence or absence of carbohydrates and the proportion of fat in a high-protein diet affect appetite suppression but not energy expenditure in normal-weight human subjects fed in energy balance

Randomized Controlled Trial

Human

2010 Nov

Contradicting (0)

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Presence or absence of carbohydrates and the proportion of fat in a high-protein diet affect appetite suppression but not energy expenditure in normal-weight human subjects fed in energy balance

Score: 59

DOI: 10.1017/S0007114510002060

Similar Assertions

When you eat a high-protein, no-carb, high-fat diet, your body starts burning more fat and produces a lot more ketones — a sign your body is switching to fat for fuel.

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If a woman who is overweight but otherwise healthy eats very few carbs for three months, her body starts making more of a fuel called beta-hydroxybutyrate — this means her body is switching to burning fat for energy instead of carbs.

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