- July 28, 2026
Stop Drinking Your Calories While Using a GLP-1
GLP-1 medicines can reduce appetite, quieten food noise and make it easier to eat smaller portions.
However, they cannot compensate for hundreds of calories being consumed through drinks.
You may have very little appetite and eat carefully throughout the day, but it is still surprisingly easy to drink enough calories to wipe out your calorie deficit.
If you are serious about losing weight, you need to pay attention to what is in your glass as well as what is on your plate.
Liquid Calories Still Count
Calories from drinks do not disappear simply because they are easier to consume.
Wine is a good example. A standard glass can contain well over 100 calories, depending on the size and alcohol content.
A few glasses during an evening can therefore add several hundred calories to your daily intake without making you feel particularly full.
The same problem applies to:
- Beer and cider
- Cocktails
- Full-sugar soft drinks
- Fruit juice
- Milkshakes
- Energy drinks
- Sugary coffees
- Drinks containing large amounts of milk, cream or syrup
You may be eating much less because of your GLP-1, but regularly drinking high-calorie drinks can slow down or completely undermine your progress.
A Reduced Appetite Does Not Protect You From Alcohol Calories
One of the main advantages of a GLP-1 medicine is that it can make controlling food intake easier.
However, drinking calories requires very little effort.
You might struggle to finish a large meal but still manage several glasses of wine over the course of an evening.
Three generous glasses of wine can easily contain several hundred calories. Those calories can quickly reduce or completely remove the deficit you created by eating less during the day.
Alcohol can also reduce your judgement and make takeaway food, snacks and desserts more tempting.
This means the total impact is often much greater than the calories contained in the drinks alone.
Alcohol and Fat Burning
Alcohol contains ethanol, which the body treats as a toxic substance that needs to be processed and removed.
When alcohol enters the body, dealing with it becomes an immediate priority.
While alcohol is being metabolised, the body reduces the amount of stored fat it uses for energy.
In simple terms, fat burning is temporarily pushed into the background while the body deals with the alcohol.
This does not mean that one drink automatically causes fat gain. Your total calorie intake still matters.
However, regular drinking makes maintaining a calorie deficit more difficult and can slow your overall progress.
Alcohol Can Interfere With Muscle Repair
Maintaining muscle should be a priority while losing weight.
When calories are restricted, there is a risk of losing both body fat and lean muscle tissue.
Resistance training, sufficient protein and proper recovery can help reduce this risk.
Alcohol works against this process.
Larger amounts of alcohol can interfere with muscle protein synthesis, which is the process the body uses to repair and rebuild muscle after training.
It can also affect sleep quality, hydration and recovery.
If your goal is to lose fat while maintaining as much muscle as possible, regularly drinking alcohol is not helping you.
What Should You Drink?
For most of the day, keep your drinks simple.
- Water
- Sparkling water
- Unsweetened tea
- Black coffee
- Tea or coffee with a small, measured amount of milk
Water, tea and coffee should be your main drinks if you are serious about controlling your calorie intake.
And no, a double Frappuccino-style coffee covered in syrup, cream and toppings does not count as ordinary coffee.
Some coffee-shop drinks are effectively desserts served in a cup and can contain as many calories as a full meal.
Sugar-free soft drinks and other very low-calorie drinks can also fit into a controlled diet, but water should remain the foundation of your fluid intake.
Be Careful With “Healthy” Drinks
Fruit juice, smoothies and flavoured coffees are often presented as healthy options, but they can still contain large amounts of sugar and calories.
A drink does not become calorie-free simply because it contains fruit, vitamins, protein or natural ingredients.
Protein shakes can be useful when they help you reach your daily protein target, but they still need to be included in your total calorie intake.
They are food in liquid form, not free calories.
A GLP-1 Is a Tool, Not a Free Pass
A GLP-1 medicine can make eating less considerably easier, but it does not override the basic requirements of fat loss.
Progress still depends on consistently consuming fewer calories than your body uses.
You can have a reduced appetite, eat small meals and still make very little progress if your drinks regularly add hundreds of unnoticed calories.
The simplest approach is often the most effective.
Drink mainly water, tea and ordinary coffee. Keep alcohol occasional, control the quantity and count every drink honestly.
Do not let a few hours of drinking undo an entire week of careful eating.
The Important Point
Do not focus only on your food while ignoring your drinks.
Alcohol, sugary drinks and high-calorie coffees can quickly consume your calorie allowance without providing the fullness you would get from a proper meal.
Alcohol also brings another disadvantage. While your body is processing it, fat burning is reduced, and larger amounts can interfere with muscle repair, sleep and recovery.
A GLP-1 can help control your appetite, but your daily choices still determine how effectively you use that advantage.
If you are serious about losing fat, make water, tea and ordinary coffee your main drinks.
The information in this article is for general education only and does not replace individual medical advice. Anyone using a prescribed GLP-1 medicine should follow the guidance provided by their prescriber.