Alcohol is one of the most overlooked contributors to weight gain in modern diets. A typical social drinker consuming 10–14 drinks per week may be taking in 1,000–2,000 extra calories without realising it — equivalent to 2–4 extra meals per week.
| Drink | Serving Size | Calories |
|---|---|---|
| Beer (5% ABV) | 330ml can | ~150 kcal |
| Wine (12% ABV) | 175ml glass | ~130 kcal |
| Spirits (40% ABV) | 25ml shot | ~55 kcal |
| Gin & tonic | 250ml | ~170 kcal |
| Cocktail (e.g. Margarita) | 300ml | ~250–350 kcal |
| Craft beer (7% ABV) | 568ml pint | ~300 kcal |
Three glasses of wine on a Friday evening = approximately 390 kcal — equivalent to a full meal that your body won't register as food.
Calories in common alcoholic drinks (standard serving)
When alcohol is present in the body, the liver prioritises metabolising it over fat. Fat burning is effectively paused for the duration of alcohol metabolism — typically 1–2 hours per standard drink. Drinking 3 drinks pauses fat metabolism for 3–6 hours.
Alcohol stimulates appetite through multiple mechanisms — it lowers inhibitions (reducing dietary restraint), increases sensitivity to food aromas, and stimulates appetite-regulating neurons. Studies show alcohol consumption increases food intake at the meal it's consumed with by 20–30%.
Alcohol initially sedates but disrupts REM sleep in the second half of the night, reducing sleep quality and duration. Poor sleep raises ghrelin and lowers leptin — increasing appetite the following day. A night of drinking effectively creates a day of elevated hunger.
Regular alcohol consumption is associated with preferential visceral fat accumulation — the "beer belly" phenomenon has a genuine physiological basis. Alcohol specifically promotes fat deposition in the abdominal region.
Among all macronutrients, alcohol is the most strongly associated with abdominal fat accumulation — and the mechanism goes beyond simple calorie surplus. When you drink alcohol, your liver prioritises metabolising it above all other fuels, including fat. This creates a metabolic environment where:
This is why regular drinkers often carry disproportionate abdominal fat relative to their overall weight — it is not just the calories.
For those who choose to drink, these evidence-based strategies minimise weight impact:
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