Misconceptions About Mounjaro – A Doctor’s Take
Mounjaro has taken the weight loss world by storm recently. And with that, I've had more and more patients come to me with questions, doubts, and (understandably) a lot of confusion.
And to be honest, I get it.
Whenever something new and effective enters the market, especially in the health and weight space, it tends to attract hype, half-truths, and the odd social media horror story. So I thought I’d clear the air and run through some of the most common misconceptions about Mounjaro I hear in clinic.
❌ Myth 1: “You’ll lose weight without doing anything”
I wish it worked like that, but the reality is a bit more nuanced.
What Mounjaro does do is:
- Significantly reduce appetite and food noise
- Help you feel fuller with smaller portions
- Make it easier to stick to healthier habits
But you’ll still need to make lifestyle changes - like adjusting your diet and staying active to get the best, most sustainable results. We always tell patients: Mounjaro is a tool, not a magic switch.
❌ Myth 2: “Once you stop, all the weight comes back”
This is a common fear, and it’s partly based in truth if you stop Mounjaro abruptly, without support or a maintenance plan, you may experience increased appetite again. That can lead to weight regain if nothing else is in place.
But it’s not inevitable.
At HeySlim, we focus on long-term care: gradual dose tapering, behaviour support, and setting you up with the right nutrition and exercise habits. The goal is to make sure you’re in control, not the other way around.
❌ Myth 3: “Mounjaro is unsafe or experimental”
Understandably, some patients are cautious. Mounjaro is newer in the UK weight loss space but that doesn’t mean it’s untested.
It’s already approved by major regulatory bodies like the MHRA and FDA, and has been studied in thousands of patients across large-scale clinical trials. As with any medication, there are side effects (like nausea or constipation early on), but with the right medical supervision, it’s a very safe option.
The real risks come when people access it without proper doctor oversight, which leads me to the next (and probably most dangerous) misconception…
❌ Myth 4: “You can just buy it online like a beauty product”
Mounjaro isn’t a moisturiser or a supplement. It’s a powerful prescription-only medication that affects your hormones, gut, and brain.
There are online platforms offering automated prescriptions with little or no medical review, and that genuinely worries me as a GP. Patients deserve more than a form and a payment link.
At HeySlim, every patient is reviewed by a real doctor. We check your medical history, monitor your response, and guide you through your weight loss journey safely.
Because this isn’t about a quick fix. It’s about your health.
❌ Myth 5: “Mounjaro is just for people with diabetes”
Yes, Mounjaro (tirzepatide) was first developed for people with type 2 diabetes, and it's incredibly effective at improving blood sugar control. But that’s only part of the picture.
Clinical trials (like the SURMOUNT studies) have shown that Mounjaro is also remarkably effective for weight loss in people without diabetes . And in fact, that’s how we often use it in private weight loss clinics like HeySlim.
So no, you don’t have to be diabetic to benefit from it. But you do need to be properly assessed to make sure it’s safe and appropriate for you.
💬 Final Thoughts from Me
There’s no shame in wanting to lose weight. But you deserve to do it in a way that’s medically sound, sustainable, and supportive.
If you’ve been hearing mixed messages about Mounjaro and aren’t sure what’s true, speak to someone who understands the science and sees the results every day.
And if that’s me or one of our doctors at HeySlim - even better.
Let’s cut through the noise and get back to what matters: your health, your goals, and your future.
Need support or curious whether Mounjaro is right for you? Book a consultation with our team or get started at heyslim.co.uk.