What you need to know about alcohol and weight gain

Does alcohol make you fat?

We all know that alcohol has calories – but how much of that actually causes weight gain? When you’re drinking, there are a number of things that could be affecting your weight without you even knowing it. If you want to know how to drink and manage your weight, read below.

How alcohol causes weight gain

According to a study titled Alcohol Consumption and Body Weight (2011), “alcohol does contribute to weight gain due to the high-calorie count in most drinks and the sugars in cocktails.” However, it’s not only the calories in alcohol that can contribute to weight gain.

There are three factors that need to be taken into account. Firstly, alcohol stimulates your metabolism and increases the urge to eat impulsively. Normally when people take part in drinking, it’s during activities with friends and family. Whether it’s at a club, a birthday or at a sporting event, these activities are often accompanied by unhealthy meals along with drinks like cocktails and beers. Alcohol also develops a desire to eat foods which are high in fat and salt, meaning that you may find yourself reaching for snacks more often.

Secondly, alcohol affects your body’s ability to burn off fat. When you drink alcohol your liver converts it into acetate which is released into the bloodstream. As the levels of acetate rise in the body, it will begin to burn more acetate and less body fat.

Thirdly, alcohol is a toxin, meaning that your body wants to get it out of your system as soon as possible. This often happens at the expense of other nutrients which are stored in the body. When it is oxidized, the signals that would indicate that you are satiated or full from eating food go undetected – which is what can cause you to overeat. These types of meals combined with your body’s reaction to alcohol can, therefore, result in weight gain over time.

How many calories are there in alcoholic drinks?

If you want to know exactly how many calories there are in your favourite drink, The National Institute of Health created a calorie calculator. Below is a list of some more popular drinks:

• Gin, Rum, Vodka, Whiskey and Tequila: 97 calories
• Red Wine: 125 calories
• White Wine: 121 calories
• Cosmopolitan: 146 calories
• Regular Beer: 153 calories
• Liqueurs: 165 calories
• Margarita: 168 calories
• Piña Colada: 490 calories

You can drink alcohol and still lose weight

From the calorie list above, it is clear that cocktails have the most calories while distilled drinks such as gin, rum and vodka have the least amount of calories. If you are trying to maintain a healthy diet, then there is some good news as you can keep losing weight while enjoying a drink every now and then.

A study on Alcohol Consumption, Weight Gain, and Risk of Becoming Overweight in Middle-aged and Older Women (2010) found that when compared to non-drinkers, “women who consumed a light to moderate amount of alcohol gained less weight and had a lower risk of becoming overweight.” This was because when women in the study drank alcohol, they made a conscious effort to lower their energy consumption from other sources – such as from carbohydrates in food.

Age-Related Weight Gain and Alcohol

Understanding alcohol and weight gain becomes increasingly important as we age, particularly for those experiencing alcohol and weight gain after 40 or after 50. Metabolic changes occurring in our 40s and 50s mean our bodies process alcohol differently than in our 20s. Heavy drinking and weight gain in females is especially pronounced during perimenopause and menopause, when hormonal shifts already predispose women to weight accumulation.

A common question remains: does alcohol make you fat or skinny? The honest answer is both — short-term it may cause temporary water loss, but long-term and regular use consistently leads to fat gain, particularly around the abdomen. Many people notice this contrast between alcohol weight gain before and after reducing their intake: the visual difference can be dramatic, with 1 to 2 drinks daily potentially adding 5 to 7 pounds over just 12 months.

Examining whether alcohol causes weight gain in the stomach specifically — the answer is yes. Alcohol increases visceral fat storage around the abdominal area, creating the characteristic “beer belly.” Healthcare professionals emphasise that proper information and care regarding alcohol and weight management must account for these age-related factors to be truly effective.

Why does alcohol cause bloating?

Have you ever noticed that you feel bloated after a night of drinking? This is because “alcohol is an inflammatory substance, which causes inflammation in the lining of the gut,” according to Robbie Clarke, an accredited dietitian and co-founder of The Health Clinic.

When the gut is inflamed, the toxins that come from the alcohol are able to cross into the bloodstream. This causes your gut to be irritated which results in symptoms of bloating. This can be made worse by drinks which contain gluten, such as beer, which also contribute to bloating. Clarke suggests staying away from carbonated mixes that are often paired with drinks, and rather enjoying distilled drinks such as vodka, tequila and whiskey on the rocks.

How alcohol can be good for weight loss

It may seem far-fetched, but there is an alcoholic drink that has certain properties that can help you to lose weight. According to sports nutritionist Chris Lockwood, the drink to look at is red wine.

Red wine increases blood flow resulting in more oxygen being transported through your body, which is needed for burning fat. It also increases the levels of hormones — free testosterone and adiponectin — which helps to burn fat and decrease estrogen, which retains fat. These effects only apply when you drink moderately, meaning that having more than one glass per day could have the opposite effect.

While there are certain benefits that come with having one glass of red wine a day, this doesn’t mean it’s a full-proof way to lose weight. It affects your sleeping patterns, causing you to wake up more frequently throughout the night. Also, if you are eating a healthy amount of fruits and vegetables they are already providing you with the antioxidants that would come from the red wine.

How alcohol can be used for weight gain

Drinking alcohol increases your appetite and can lead you to eat more if you have a drink before a meal. This stimulation of appetite and choices based on taste rather than healthiness is what can lead to weight gain. However, one should keep in mind that heavy drinking will cause you to gain weight in a way that can cause serious health risks.

Alcohol affects your body in a number of ways when it comes to weight gain. Whether it’s by stimulating your appetite or by disrupting the hormones that help with burning fat, there are few benefits and many drawbacks that come with drinking alcohol. However, if you drink in moderation and watch the types of drinks that you order you will be able to manage your weight better.

Does alcohol slow your metabolism?

Alcohol doesn’t technically “slow” your metabolism in the sense of lowering your basal metabolic rate, but it temporarily shifts your body’s priorities: because alcohol is treated as a toxin, your liver focuses on breaking it down first, which suppresses fat and carbohydrate oxidation for several hours. This means less fat burning while alcohol is in your system, and more likelihood of dietary fat being stored. Alcohol also adds 7 empty calories per gram, can disrupt hormones (like thyroid and testosterone), reduce sleep quality, and — if consumed chronically — may lower muscle mass and liver efficiency, all of which indirectly slow metabolic processes over time.

What alcohol makes you gain the most weight?

The type of alcohol that contributes most to weight gain is usually high-calorie cocktails and heavy beers — not because the alcohol itself is dramatically different, but because of the total calorie load and what they’re mixed with. Cocktails often combine spirits with sugary syrups, juices, or creams, reaching 300–600+ calories per drink, while strong craft beers can pack 300–400 calories per pint. In contrast, straight spirits like vodka, gin, or whiskey have the fewest calories per serving (around 65–75 kcal per shot). Ultimately, weight gain is driven by total calorie intake and drinking patterns, not a single “fattening” alcohol type.

Rapid Weight Fluctuations and Recovery

While true fat gain doesn’t happen overnight, alcohol can cause 2 to 5 kg of temporary weight increase within a single night due to inflammation, water retention, and digestive slowdown.

For those seeking practical advice on how to lose alcohol weight gain, health services recommend a multi-pronged approach: eliminating or significantly reducing alcohol consumption, increasing water intake to flush toxins, prioritising whole foods over processed options, incorporating regular exercise, and getting adequate sleep for hormonal balance. Studies indicate that individuals who stop drinking can see noticeable changes within 1 to 2 weeks, with more dramatic results appearing within 12 weeks.

Frequently Asked Questions

Can drinking more alcohol make you gain weight?

Yes — consistently drinking more alcohol increases weight gain through multiple pathways: more calories consumed directly, increased appetite and impulsive eating, disrupted fat metabolism as your liver prioritises processing alcohol, and poorer sleep (which affects hunger hormones). Even if you don’t feel like you’re eating more, research shows that regular drinkers tend to accumulate more body fat over time, especially around the abdomen.

How long does it take for weight gain from alcohol to go away?

Water weight and bloating caused by alcohol typically resolve within 2–4 days of stopping. Actual fat gained through prolonged drinking takes longer — most people notice meaningful changes within 1–2 weeks of quitting or significantly cutting back, with more substantial results visible by 12 weeks. The speed of recovery depends on how much alcohol was consumed, overall diet quality, exercise levels, and individual metabolism.