Understanding Weight Loss and Your Body
Weight loss is often described as a simple balance between calories in and calories out. While this is technically true, it doesn’t reflect how complex the process actually is.
Your body regulates weight using hormones that control hunger, fullness, and energy use. When you try to lose weight through dieting alone, your body can respond by increasing hunger and making you feel less satisfied after eating. This can make it difficult to maintain progress over time, even when you’re motivated.
This is where medical treatments can play a role. Rather than relying on willpower alone, they work with these biological systems to make weight loss feel more manageable.
What Are GLP-1 Weight Loss Treatments?
GLP-1 medications are based on a hormone called glucagon-like peptide-1, which is naturally released from the gut after you eat. This hormone plays an important role in regulating appetite and blood sugar — it signals to the brain that you’ve eaten, slows digestion, and influences insulin release to help stabilise blood glucose levels.
GLP-1 treatments mimic this hormone in a longer-acting form, meaning the effects last throughout the week rather than just after meals. As a result, they:
- Reduce hunger signals sent to the brain
- Increase feelings of fullness after eating
- Slow digestion, helping you stay satisfied for longer
Some treatments, such as Mounjaro, also act on an additional hormone (GIP), which may further enhance these effects. Together, these mechanisms help regulate appetite in a way that supports a sustained reduction in calorie intake.
What Does It Feel Like to Be on GLP-1s?
Many people describe a noticeable reduction in appetite. Meals may feel smaller, and the urge to snack or think about food constantly — sometimes referred to as “food noise” — can decrease. This doesn’t mean you stop enjoying food, but it can feel easier to make choices without the same level of effort or internal struggle.
The aim is not to restrict you, but to support a more natural sense of control around eating.
How Effective Is It?
GLP-1 treatments have been studied in large clinical trials and shown to produce meaningful weight loss. Here’s what the evidence shows:
~14%
average body weight lost over 68 weeks
~20%
average body weight lost over 72 weeks
It’s important to remember that these are averages — some people lose more, others less. What matters most is that the weight loss is gradual, clinically supported, and more sustainable over time compared to short-term dieting.
What About Side Effects?
As with any medication, side effects can occur. The most commonly reported ones are related to digestion:
These effects are usually more noticeable at the beginning of treatment or when the dose is increased. For most people, they settle as the body adjusts.
During follow-up consultations your progress and any side effects are reviewed carefully. If needed, dose adjustments can be made and additional support provided — keeping your journey both safe and manageable.
Is Treatment Suitable for Me?
GLP-1 weight loss treatments are not intended for general or cosmetic weight loss. They are prescribed based on clinical guidelines and individual assessment.
- Your BMI is 30 or above
- Your BMI is 27 or above alongside a weight-related condition, such as high blood pressure, type 2 diabetes, PCOS, or high cholesterol
You might consider treatment if you’ve found it difficult to lose weight through diet and exercise alone, or if you feel stuck in cycles of losing and regaining weight.
Mounjaro or Wegovy?
Both are once-weekly injections designed to manage appetite and support weight loss, but they work slightly differently.
| Mounjaro (tirzepatide) | Wegovy (semaglutide) | |
|---|---|---|
| How it works | Mimics GLP-1 and GIP — dual action | Mimics GLP-1 hormone |
| Weight loss | ~20% over 72 weeks | ~13–15% over 68 weeks |
| Frequency | Once weekly injection | Once weekly injection |
| Best suited to | Those seeking greater weight loss potential | Those preferring a well-established treatment |
The most appropriate choice depends on your individual health, how your body responds, and your overall goals. A consultation will help determine which option is right for you.
What Happens If I Stop Treatment?
GLP-1 treatments help you build new habits while your appetite is better controlled. During treatment, many people naturally develop changes in how they eat — including smaller portion sizes, more regular eating patterns, and improved awareness of hunger and fullness.
These changes are important because they form the foundation for maintaining weight loss over time. With the right support and guidance, many people are able to carry these habits forward after treatment ends.
What Next?
If you feel ready to start treatment, the next step is to begin your journey with us. You can do this by completing a short pre-consultation form and arranging a consultation with one of our weight loss clinicians.
During this consultation, you’ll have the opportunity to discuss your options in detail, ask any questions, and receive a personalised recommendation based on your individual needs. From there, you can decide how you’d like to move forward, with clear guidance and ongoing support at every stage.
