If you’ve recently started treatment with Wegovy (semaglutide) and noticed yourself feeling colder than usual, you’re not imagining it. Many people describe reaching for extra layers, socks or blankets once they begin their injections.
Although ‘feeling cold’ isn’t officially listed as a side effect in clinical trials, it’s a commonly reported experience among people on Wegovy, particularly during the early stages of treatment or when weight loss is more rapid. Let’s explore why this happens and what you can do to manage it.
Can Wegovy make you feel cold?
Yes, while it’s not included in the official side effect profile for either the injection or the pill, many patients say they feel colder than before starting treatment. For some, it feels like a constant chill; for others, it comes and goes, often linked to changes in diet or body weight.
Why might Wegovy cause cold sensitivity?
There isn’t one clear reason, but a few factors may contribute:
- Reduced calorie Intake – Wegovy helps lower appetite, so many people naturally eat less. With fewer calories available, your body may produce less heat.
- Weight loss and less insulation – As you lose body fat, you also lose some of your body’s natural insulation. This can make you more sensitive to cooler temperatures, especially in winter.
- Metabolic adjustments – Wegovy slows digestion and affects hormones linked to blood glucose. These changes may also influence how your body regulates heat.
How to manage your body temperature on Wegovy
If you’re finding the chill uncomfortable, try these practical strategies, whether you’re on the injection or the pill:
- Layer your clothing – Thermal tops, cosy socks or even fingerless gloves indoors can help regulate your temperature.
- Stay hydrated – Proper hydration supports circulation and helps with temperature regulation. Aim for 2-3 litres of fluid per day and limit caffeine and alcohol.
- Move regularly – Gentle activity such as walking or stretching improves circulation and can warm you from the inside out.
- Eat balanced meals – Skipping meals or undereating can worsen cold sensitivity. Include a mix of carbohydrates, protein and healthy fats at each meal.
- Choose warm food and drink – Soups, stews, porridge and herbal teas can be especially comforting.
- Check your health – Low iron levels (anaemia) or an underactive thyroid (hypothyroidism) can make you feel the cold more. If you’re worried, speak to your GP.
- Speak to Phlo Clinic – If the cold sensitivity is significantly affecting your quality of life, inform our expert clinical team to get the help you need.
Does Wegovy cause heat intolerance too?
Changes in how you experience temperature can have a number of causes, and not all of them relate to your treatment. If you notice a change that's uncomfortable or unusual for you, mention it to your prescribing clinician, in the same way you would persistent cold sensitivity. They can check whether anything else might be behind it.
When to seek medical advice about feeling cold on Wegovy
Most of the time, feeling a bit colder than usual isn’t harmful. But you should seek advice from a healthcare professional if:
- You constantly feel cold, no matter the environment.
- Your hands and feet are often numb or tingling.
- You also feel weak, dizzy, or very tired.
- You are losing weight at a very fast rate.
- You suspect an issue with your thyroid or iron levels.
Feeling cold on Wegovy can be unexpected but it’s a fairly common and usually a manageable experience. With some simple adjustments, most people find it doesn’t interfere with their treatment.
If anything feels out of the ordinary or concerning, always check in with your healthcare provider. Wegovy can be a valuable tool for weight management and you don’t need to let the chill get in the way of your progress.
