Christmas is here, and with it, the very indulgence of food presents itself, and whilst plates should be loaded with festive food without a second thought.

A new study from Icelandsuggests the average Brit will get through 117 pieces of party food across December. And onChristmas Day, the average person is expected to consume close to5400 calories. A YouGov poll found that 41 per cent of people go back for a second round of meat during christmas-dinner>Christmas dinner, and that’s before all the trimmings.

However, for an estimated 1.5 million people in the UK who now take weight loss jabs, this indulgence can bring a very different experience. These medications can change how much food and alcohol your body can comfortably tolerate, so Christmas can present a riskier moment for overdoing things. Pushing past this limit for those on jabs, can lead to more than bloating including sudden sickness and vomiting. Kiran Jones, a clinical pharmacist at Oxford Online Pharmacy, has shared advice on how people can enjoy the season without ending up unwell or derailing their progress.

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The most widely used weight loss injections, including Mounjaro and Wegovy, contain GLP-1 agonists. These medicines help regulate blood sugar by triggering the release of insulin, which controls blood sugar levels.

This slower digestion is exactly what creates trouble at Christmas. Those on medication will have their stomach emptied much more slowly, so anything heavy or rich has more time to sit there and become overwhelming, creating strain on the stomach, which can also be worsened by alcohol.

Rich foods combined with long periods of sitting down and little movement mean the stomach can reach its limit quickly. This is what would lead to nausea and vomiting.

Occasional nausea is a known side effect of GLP 1 medication, especially during the first weeks of treatment. So indulgence and repeated sickness can become an issue.

Vomiting leads to the sudden loss of fluids and electrolytes, leaving you tired, shaky and lightheaded. Jab users can become more vulnerable to dehydration than usual. Continued vomiting can mean your body will struggle to absorb nutrients from the food you are eating, leading to a sensitive stomach.

I know side effects for some can be acid reflux, brought up during vomiting can irritate your throat and stomach lining, worsening reflux and making nausea more intense.

Christmas buffets and grazing tables make it easy to eat constantly without realising how much you have had. So it’s important to be conscious of what is being put on your plate and being consumed.

It’s important to prioritise protein, fibre and nutrient-rich foods, then add small portions of your favourite treats. Eating vegetables first, followed by protein, then fats and carbohydrates, can make meals easier to tolerate. Anything rich or creamy in larger proportions can cause discomfort and lead to triggering nausea.

Alcohol is dehydrating and irritating to the stomach, even without weight loss medication. With jabs, these effects can be stronger. It’s best to stick to lower-strength options, such as cider or a dry glass of wine, and sip slowly, whilst almost maintaining a firm limit of two drinks. It’s best not to have alcohol on an empty stomach.

Medicines like Wegovy can reduce both hunger and thirst signals, especially at the start of treatment. It’s important to drink a small glass of water every hour throughout the day.

Skipping meals to build up an appetite for Christmas dinner will only tempt you to overeat later. Try having a light breakfast earlier in the day, so by the main meal, you can comfortably enjoy things instead of overeating from being ravenous.

Lying down after a heavy meal encourages food to move back up the oesophagus, which makes nausea more likely. Instead, try a gentle walk, light tidying, or simply staying seated upright.

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