Alcohol on Keto: What’s Safe and What Isn’t
The ketogenic diet involves drastically reducing carbohydrate intake to achieve ketosis, a metabolic state where the body burns fat for fuel. While many focus on food choices, alcohol consumption is often overlooked. Understanding which alcoholic drinks fit within a keto framework can help maintain progress without unnecessary setbacks.
How Alcohol Affects Ketosis
Alcohol is metabolised differently from other macronutrients. The liver prioritises breaking down alcohol over fat, which can temporarily slow ketone production. However, the main concern with alcohol on keto is carbohydrate content. Many drinks contain sugars that can quickly exceed daily carb limits.
A 2013 study in the British Journal of Nutrition found that very-low-carbohydrate diets were effective for weight loss, but consistency matters. tracking your macros becomes particularly important when including alcohol, as hidden carbs can add up quickly.
Lowest Carb Alcohol Options
Spirits like gin, vodka, whisky and tequila contain zero carbs when consumed neat. A single 25ml measure at 40% ABV typically contains around 55 calories. Mixers are where problems arise – swap sugary tonic for soda water with lime at £1.20 for 1 litre at Tesco.
Dry wines are another reasonable option. A 125ml glass of brut champagne contains about 2g carbs, while the same serving of dry white or red wine has 3-4g. Avoid dessert wines and most rosés, which can contain 10-15g carbs per glass.
What to Avoid on Keto
Beer is particularly high in carbohydrates, with a pint of regular lager containing 10-15g. Even so-called ‘low-carb’ beers usually have 5-7g per bottle. Cocktails are another minefield – a piña colada can pack 30g carbs, more than many people’s entire daily allowance on keto.
Pre-mixed spirits and alcopops are almost always high in sugar. A 275ml bottle of a popular alcopop brand contains 25g carbs – equivalent to six teaspoons of sugar. These drinks spike blood glucose while providing little nutritional value.
What This Means in Practice
During British summer gatherings, opt for a gin and soda with fresh mint (£18 for 70cl Gordon’s at Sainsbury’s) over Pimm’s, which contains 15g sugar per 100ml. In winter, a small measure of whisky with ice makes a warming low-carb alternative to mulled wine.
If drinking socially, plan ahead by saving carbs from other sources. keto-friendly snacks like nuts or cheese can help slow alcohol absorption. Stay hydrated with water between drinks to mitigate dehydration and next-day effects.
Managing the Effects
Alcohol tolerance often decreases on keto as the body becomes more efficient at processing it. This means you may feel the effects faster than before starting the diet. The diuretic effect of alcohol combined with keto’s natural water loss increases dehydration risk.
Electrolyte imbalance can worsen hangovers. Consider increasing sodium, potassium and magnesium intake if drinking. A 2019 study in Frontiers in Endocrinology noted that nutritional ketosis affects fluid balance, making proper hydration even more crucial.
Frequently Asked Questions
Can I drink alcohol and stay in ketosis?
Yes, in moderation. Stick to spirits with zero-carb mixers or dry wines. The key is accounting for the carbs in your daily limit and understanding that alcohol metabolism may temporarily slow fat burning.
How many carbs are in vodka?
Pure vodka contains zero carbs. The concern comes from what it’s mixed with. A vodka soda with lime contains less than 1g carbs, while a vodka orange juice has about 15g per 150ml serving.
Does alcohol stop weight loss on keto?
Alcohol itself doesn’t contain carbs that would kick you out of ketosis (except for sugary drinks), but it does provide empty calories. The body burns alcohol before fat, which can temporarily pause weight loss.
The Bottom Line
Alcohol can be part of a ketogenic lifestyle when chosen carefully and consumed in moderation. Spirits with zero-carb mixers and dry wines are the safest bets, while beers, cocktails and sweet wines are best avoided. Being mindful of both carbohydrate content and alcohol’s metabolic effects helps maintain progress. If you’d rather not do the macro maths yourself, the Keto Dieting app does it for you on Google Play and the App Store.
References
- Bueno NB, de Melo IS, de Oliveira SL, da Rocha Ataide T (2013). Very-low-carbohydrate ketogenic diet v. low-fat diet for long-term weight loss: a meta-analysis of randomised controlled trials. British Journal of Nutrition. https://doi.org/10.1017/S0007114513000548
- Athinarayanan SJ, Adams RN, Hallberg SJ, et al. (2019). Long-Term Effects of a Novel Continuous Remote Care Intervention Including Nutritional Ketosis for the Management of Type 2 Diabetes: A 2-Year Non-randomized Clinical Trial. Frontiers in Endocrinology. https://doi.org/10.3389/fendo.2019.00348
