Enjoying Halloween while on weight loss medication

Halloween is a chance to have a little fun, whether that means dressing up, settling in for a scary film with friends, heading to a party or enjoying a few of your favourite treats.

When you’re trying to lose weight, though, occasions centred around food and drink can sometimes feel trickier. From the extra chocolates in your office to the bowl of sweets by the door awaiting the trick or treaters, sugary treats seem to appear out of nowhere. All this, on top of a busier-than-usual social calendar!

If you’re taking weight loss medication, you may be wondering how to enjoy it all while staying on track, particularly if your appetite has changed or you’re not sure how richer foods, sugary treats or alcohol might make you feel. In this guide, we’ll look at practical ways to enjoy Halloween without worry or guilt.

Three things to remember this Halloween

1. One evening won’t undo your progress. If you enjoy a few more treats than usual this Halloween, there’s no need to feel guilty or try to make up for it afterwards.
2. There’s still room for the foods you enjoy. Enjoy what you genuinely fancy, without labelling foods as “good” or “bad”. A flexible approach can be much easier to maintain long term than trying to be perfect.
3. Listen to your body. Weight loss treatment can change your appetite and how much food feels comfortable. Rich or sugary foods and alcohol may also feel different, particularly if you’re experiencing digestive side effects. Take your time, check in with how you’re feeling and stop when you’ve had enough.

How does sugar affect weight loss?

Sugar isn’t something you need to completely avoid to lose weight.

When it comes to weight loss or maintenance, your overall calorie intake matters:

• Eating fewer calories than your body uses over time can lead to weight loss.
• Eating roughly the amount your body needs can help you maintain your weight.

This means a few mini chocolates or a slice of cake at a party can be part of the bigger picture. However, foods high in sugar can add extra calories quite quickly. The HSE recommends having these foods in smaller amounts as part of a healthy, balanced diet.

How much sugar can you have in a day?

Adults should have no more than 30g of free sugars a day, which is roughly equivalent to seven sugar cubes.

That doesn’t mean you need to worry if you occasionally go over. Think about what your diet looks like overall rather than treating 30g as a line you can never cross.

Also, when we talk about limiting sugar, we’re mainly talking about free sugars. These include sugar added to foods and drinks. However, they exclude the ones found naturally in whole fruit, vegetables, and milk, all of which provide valuable nutrients – such as vitamins, minerals, and fibre – that can contribute to a balanced diet.

How to enjoy Halloween treats while losing weight

Halloween treats have a habit of appearing everywhere, often long before 31 October. Rather than trying to avoid them completely, a few small, realistic choices can help you enjoy the season without feeling like you’ve put your progress on pause.

Choose the treats you really want

When the office sweet bowl has been topped up again or there’s leftover trick-or-treat chocolate at home, it’s easy to eat something simply because it’s there.

Save your appetite for the treats you genuinely enjoy. This is especially important as weight loss medication might reduce how much you can eat. So before reaching for every sweet treat, pause and ask yourself: do I actually fancy this?

Don’t make your favourites off-limits

Telling yourself you can’t have a particular food can sometimes make it feel even more tempting. And Halloween can quickly become stressful if you spend the whole time trying to dodge every sweet in sight. So, if your favourite chocolate only comes out at Halloween, give yourself permission to enjoy it rather than aiming for complete restriction.

Make room for a favourite treat

Calorie tracking isn't right for everyone, and you certainly don't have to start just for Halloween.

But if you find helpful, you could use it to make room for the treats you really want. For example, if you know you're having a Halloween film night later, you might decide ahead of time what you'd most enjoy and include it within your usual calorie goal.

That doesn't mean skipping lunch to “earn” it. Keep eating your usual balanced meals and make your treat part of the day, rather than something you need to compensate for.

Try making your own Halloween treats

If you enjoy getting creative in the kitchen, Halloween is a good excuse to try something different. Here are a few easy options you could try:

• Halloween chocolate bites: Nutty and perfectly sweet, these protein-packed bites make a deliciously simple Halloween treat.
• Raspberry and oat crumble slices: A golden oat raspberry crumble that's packed with fibre and perfect for sharing.
• Frozen yoghurt bark: Simple and high in protein, this snack can satisfy sweet cravings while supporting your weight loss goals.
• Cloud muffins: Light as air and naturally sweet, these fluffy cloud muffins are a snack you can have on the table in just 20 minutes.

However, you don't need to turn every Halloween favourite into a healthier version. If you genuinely want a chocolate bar, have the chocolate bar. Homemade options simply give you another way to join in and enjoy the season.

Get leftovers out of sight

It's much easier to forget about the Halloween sweets when they're not staring at you every time you walk into the kitchen.

Once the trick-or-treaters have gone, put any leftovers away rather than leaving the bowl on the counter. If you've bought far more than you need, you could take unopened treats into the office or offer some to neighbours.

It's not about having more willpower. Sometimes making your surroundings work for you is the simplest way to make your everyday choices feel easier.

Make the most of pumpkin season

Halloween food doesn’t have to be all about sweets and chocolate. There are plenty of ways to enjoy the spooky season while making healthier choices. For one, adding pumpkin to a few of your usual meals is an easy way to get into the spirit.

If you enjoy cooking or baking, carving out some time to try a new pumpkin recipe can also turn food preparation into part of the fun. Put on a favourite autumn playlist or scary film, get creative in the kitchen, and make an afternoon of it.

Healthy ways to eat pumpkin

Pumpkin works in both sweet and savoury dishes, so there are plenty of ways to make the most of it, such as:

• making a pumpkin soup
• adding spiced roast pumpkin to a simple beef bowl or alongside a grilled fish
• stirring it into stews as an easy way to add another vegetable to your meal
• mixing pumpkin puree and a dash of cinnamon into your morning oats for a cozy autumnal twist

How to navigate Halloween parties while on weight loss treatment

Parties can feel a little harder to deal with when you’re taking weight loss medication, especially if your appetite isn’t what it used to be. But you don’t need to spend the evening worrying about every food choice. A few simple habits can help you feel comfortable while still enjoying yourself.

Eat before you go

Try not to skip meals during the day to “save” calories for the party. Arriving hungry can make it harder to recognise when you’ve had enough. Instead, eat as you normally would and have a balanced meal before you head out. This is particularly important if you’re planning to drink alcohol.

Take your time

Weight loss treatments can help you feel fuller sooner, so give yourself time to notice when you’ve had enough. Eat slowly, enjoy the food, and check in with how you’re feeling as you go. If you’re comfortably full, it’s okay to stop, even if there’s food left on your plate or everyone else is still eating.

Listen to your body

Halloween favourites can often be rich, sweet or higher in fat. If you’re already dealing with digestive side effects from your treatment, you may find that some party foods make you feel less comfortable.

Everyone responds differently, so pay attention to what works for your body. If you know certain foods tend to leave you feeling nauseous, overly full or uncomfortable, have a smaller amount or choose something you know you tolerate well. You can still enjoy the party without pushing yourself to eat more than feels comfortable.

For more information, read our guides to Mounjaro side effects, or Wegovy side effects.

Be mindful of alcohol

Alcohol doesn’t have to be automatically off-limits when you’re managing your weight, but it’s worth being mindful of how much you’re drinking and how it makes you feel.

Alcohol contains calories, so drinks can contribute to your overall calorie intake. It can also affect appetite, which may influence what and how much you eat alongside it.

There’s your treatment to consider, too. Some weight loss medications can cause digestive side effects such as nausea or vomiting, while drinking too much alcohol can contribute to sickness and dehydration. If you’re unsure whether it’s safe to drink with your particular medication, follow the guidance that comes with your treatment and speak to your GP or prescribing clinician.

For more treatment-specific advice, read our guides to drinking alcohol while taking Mounjaro and drinking alcohol while taking Wegovy.

If you choose to drink:

• Have a balanced meal before you head out rather than skipping food to save calories for drinks.
• Drink plenty of water throughout the evening.
• Have water or another alcohol-free drinks between alcoholic ones.
• Give yourself time and pay attention to how you’re feeling.
• Don’t push yourself! If your treatment is already making you feel nauseous or unwell, skipping alcohol may help you feel more comfortable and enjoy the evening.

Halloween doesn't need to be all about food or drinking

If Halloween parties feel overwhelming, you can mix things up by suggesting plans where eating and drinking take more of a back seat.

You could:

• Settle in for a horror film night.
• Carve pumpkins or try some Halloween crafts.
• Wrap up warm and go for an autumn walk.
• Visit a pumpkin patch or spooky attraction.
• Get everyone together for a games night.
• Put your Halloween knowledge to the test with a themed quiz.

And this doesn't mean leaving the snacks behind. Make some popcorn for your film or have a few snacks while you carve pumpkins if you want to. The idea isn't to avoid food, but to make it one enjoyable part of the occasion rather than what the whole plan revolves around.

Had more than you planned? Don’t panic!

Sometimes the food is too good, there’s another round of drinks, or you simply eat more than you expected. That doesn’t mean you’ve undone your progress.

Weight loss is shaped by the habits you build consistently over time, not one party or a handful of extra treats. So try not to punish yourself the next day by skipping meals or severely restricting what you eat.

Instead, draw a line under it and get back to your usual routine. Eat your normal balanced meals, drink plenty of water, and carry on with the habits that have been working for you. Celebrations are part of everyday life, and enjoying one doesn’t need to be something you “make up for”.

Your Halloween, your way

“Halloween doesn’t need to be something you avoid just because you’re on a weight loss journey. If your treatment has reduced your appetite, use that as a cue to be more selective. Choose the treats you genuinely enjoy, take your time with them and stop when you feel satisfied. Aim for balance, rather than trying to be perfect.”

Ayesha BashirPrescribing Pharmacist

And remember, you’re not doing this alone. If you have any questions about your treatment or need support navigating this time of the year, the myBMI team is here to support you.

Sources

• Sugar: the facts. (2023) NHS. [Accessed 23 October 2026]
• How to eat well. (2023) HSE. [Accessed 23 October 2026]
• Medicines to treat obesity (2025) HSE. [Accessed 23 October 2026]
• Alcohol, weight and nutrition. (2025) HSE. [Accessed 23 October 2026]
• Daily Calorie Calculator: How Many Calories Do You Need? (2025) Healthline. [Accessed 23 October 2026]