Why alcohol makes your body burn more calories but doesn't make you less hungry
Meals with similar energy densities but rich in protein, fat, carbohydrate, or alcohol have different effects on energy expenditure and substrate metabolism but not on appetite and energy intake
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
When you eat a meal full of alcohol, your body works harder to process it and burns more energy, but it also stops burning fat and lowers a hormone that tells you you're full. Still, you don't feel hungrier or eat more later than after eating carbs, fat, or protein.
Surprising Findings
Alcohol increased diet-induced thermogenesis by 27% (P < 0.01)—more than protein’s 17% (NS)—despite being a toxin, not a nutrient.
Everyone assumes protein is the most thermogenic macronutrient. The fact that alcohol—a non-essential, toxic substance—triggers a stronger metabolic response than protein is counterintuitive and contradicts common nutritional dogma.
Practical Takeaways
If you're trying to lose fat, avoid alcohol with meals—it may burn more calories overall but shuts down fat burning and doesn’t curb hunger.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
When you eat a meal full of alcohol, your body works harder to process it and burns more energy, but it also stops burning fat and lowers a hormone that tells you you're full. Still, you don't feel hungrier or eat more later than after eating carbs, fat, or protein.
Surprising Findings
Alcohol increased diet-induced thermogenesis by 27% (P < 0.01)—more than protein’s 17% (NS)—despite being a toxin, not a nutrient.
Everyone assumes protein is the most thermogenic macronutrient. The fact that alcohol—a non-essential, toxic substance—triggers a stronger metabolic response than protein is counterintuitive and contradicts common nutritional dogma.
Practical Takeaways
If you're trying to lose fat, avoid alcohol with meals—it may burn more calories overall but shuts down fat burning and doesn’t curb hunger.
Publication
Journal
The American Journal of Clinical Nutrition
Year
2003
Authors
Anne Raben, Lisa Agerholm-Larsen, Anne Flint, Jens J Holst, Arne Astrup
Related Content
Claims (6)
Diet-induced thermogenesis is significantly higher for dietary protein compared to carbohydrates and fats due to the energetic cost of protein absorption, metabolism, and amino acid synthesis.
Eating a meal high in alcohol makes your body burn more calories right after eating than eating the same number of calories from carbs or fat, and protein does it a little less.
Even though alcohol, protein, carbs, and fat affect your metabolism differently, eating any of them in similar amounts doesn’t make you feel hungrier or fuller, or change how much you eat next.
The idea that the order your body burns food (alcohol first, then protein, etc.) tells you which food makes you feel full first is not true — eating these foods in equal amounts doesn’t make you feel differently full.
When you eat a meal with a lot of alcohol, your body stops burning fat and makes less of the hormone that tells you you're full, more than when you eat the same calories from other foods.