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Why Am I Feeling Cold on Mounjaro?

feeling cold on mounjaro

“Why on earth do I feel so cold on Mounjaro?” We’ve all seen the social media commentary and the sometimes brilliant humour on the feeling of cold.
If you’ve started taking Mounjaro and suddenly find yourself reaching for sweaters when you’d usually be thinking about flashing some skin, you’re not alone. Many people notice they feel unusually chilly on this medication, even though it’s not officially listed as a common side effect. Let’s explore why this happens and what you can do about it.

Your Body’s Temperature Puzzle

Feeling Cold on Mounjaro, it’s a Puzzle

The cold sensation you’re experiencing likely comes from several of Mounjaro’s effects working together. Think of it like your body’s thermostat getting temporarily reset. The medication’s benefits for blood sugar control and weight management inadvertently affect how your body regulates temperature in a few key ways.

First, Mounjaro’s positive impact on your cardiovascular system can lead to slightly lower blood pressure. While great for your heart health, this means your body may send less blood to your hands and feet to prioritize your core organs. You might notice your fingers and toes feeling particularly chilly, especially in cooler environments.

At the same time, the medication’s effect on your appetite means you’re probably eating less. Food actually helps generate body heat through digestion, so fewer meals can translate to feeling colder throughout the day. This effect often becomes most noticeable in the evenings when you haven’t eaten for a while.

The Weight Loss Factor

As Mounjaro helps with weight management, your changing body composition plays a role too. Fat acts as natural insulation, so as you lose weight, especially in those first few months, you might find yourself more sensitive to temperature changes. It’s similar to how a thinner blanket provides less warmth than a thick one.

Your metabolism is also adapting to these changes. Some research suggests medications like Mounjaro might temporarily affect how your body produces heat at a cellular level. This adjustment period can make you feel colder while your systems recalibrate.

Staying Comfortable While Your Body Adjusts

The good news is there are plenty of simple ways to stay cozy while your body adapts. Layering your clothing gives you flexibility to adjust throughout the day – think light sweaters you can easily remove if you warm up. Pay special attention to keeping your hands and feet warm with good quality socks and gloves when needed.

What you eat matters too. Warm soups and herbal teas can provide comforting heat from the inside out. Try incorporating more protein and healthy fats into your meals, as these nutrients help maintain your body’s heat production. Little snacks between meals can also help keep your internal furnace stoked.

Don’t underestimate the power of movement either. Short walks or light stretching periodically through the day gets your blood flowing to all those chilly extremities. Many people find their cold sensitivity improves after a few months as their body adjusts to the medication’s effects.

When to Check With Your Doctor if Feeling Cold On Mounjaro

While feeling cold on Mounjaro is usually nothing to worry about, it’s worth mentioning to your healthcare provider if it’s really bothering you or comes with other symptoms like unusual fatigue, dizziness, or numbness in your fingers and toes. They can check if there might be other factors at play, like thyroid function or circulation issues.

Remember, this chilly phase is typically temporary. As your body finds its new equilibrium with the medication’s effects, your temperature regulation should stabilize. In the meantime, keep that cozy cardigan handy and know that this odd side effect is actually a sign your treatment is working as it should.

A Quick Note: Everyone’s experience with medication is unique. What we’ve shared here comes from patient reports and our understanding of how Mounjaro works, but it’s not medical advice. Your prescriber is always the best person to talk to about any concerns with your treatment.

Need Medical Assistance?

If you require urgent medical advice or care, here are some key contacts and resources:

  • NHS 111 – For urgent but non-life-threatening concerns, visit 111.nhs.uk or call 111 (available 24/7).
  • GP Appointments – Contact your local doctor’s surgery for non-urgent health issues. If you’re not registered with a GP, use the NHS GP Finder to locate one near you.
  • Emergency Services – For life-threatening emergencies (e.g., chest pain, severe bleeding, difficulty breathing), call 999 or go to A&E immediately.
  • Pharmacy Advice – Your local pharmacist can provide guidance on minor illnesses and medications. Find one via the NHS Pharmacy Finder.

Always ensure your GP has your up-to-date contact and medical details. For more health information, visit NHS.uk.