Obesity is a recognised medical condition, not a matter of willpower. The latest Health Survey for England found that around two-thirds of adults in England are overweight or living with obesity, with roughly three in ten living with obesity. Carrying excess weight raises the risk of type 2 diabetes, high blood pressure, heart disease and several cancers, so safe, clinically supervised treatment can make a meaningful difference to long-term health.

For many years the medical options were limited. That has changed with a new generation of GLP-1 and dual GIP/GLP-1 medicines. Rather than relying on willpower alone, these treatments work with your body’s own appetite hormones: they help you feel full sooner, stay satisfied for longer and quieten persistent food cravings, which naturally reduces how much you eat. They are prescription-only medicines, licensed by the Medicines and Healthcare products Regulatory Agency (MHRA) and appraised for clinical and cost-effectiveness by the National Institute for Health and Care Excellence (NICE). Crucially, they are designed to be used alongside a reduced-calorie diet and increased physical activity — a tool that makes lasting change more achievable, not a substitute for it.

These medicines also differ from the older weight loss tablets some people may have tried. Treatments such as orlistat work by reducing how much fat the body absorbs from food, which can help but tends to produce more modest results. GLP-1 and dual GIP/GLP-1 medicines instead target the underlying biology of appetite and fullness, which is why they have changed expectations of what medical weight management can achieve. Even so, they are not a quick fix: they work best as part of a sustained, supported plan, and they are most effective for people for whom they are clinically suitable.

The practical effect is a noticeable reduction in appetite and in that constant background pull towards food. With less intrusive hunger and an earlier sense of fullness, portion sizes tend to fall naturally.

Mounjaro takes this a step further. As a dual agonist, it acts on both the GLP-1 and the GIP (glucose-dependent insulinotropic polypeptide) receptors. GIP is another gut hormone involved in how the body handles energy and blood sugar, and acting on both pathways at once is thought to be why dual agonists have produced larger average reductions in body weight in clinical trials than GLP-1 treatments alone.

Because these medicines influence the biological drivers of hunger rather than relying on self-control, they can help break the cycle of restriction and rebound that makes long-term weight loss so difficult. That is also why they are prescribed at a low starting dose that is increased gradually — this titration gives your body time to adjust and helps limit side effects. None of this replaces healthy habits; instead, it makes those habits considerably easier to maintain.

In clinical studies, these medicines have been associated with improvements in blood pressure, blood sugar control and cholesterol — all important risk factors for heart disease and type 2 diabetes. For people living with conditions that are strongly influenced by weight and insulin resistance, such as polycystic ovary syndrome, the benefits can extend beyond weight alone.

The cardiovascular evidence has grown rapidly. The SELECT trial, for example, found that semaglutide reduced the risk of major cardiovascular events in adults who were overweight or living with obesity and had established cardiovascular disease but not diabetes. While this does not mean these medicines are suitable or recommended for everyone, it reinforces an important point: treating obesity effectively is increasingly understood as protecting long-term health, not simply changing appearance. Your clinician will always weigh the potential benefits against any risks for your individual situation.

For some people, structured changes to diet and physical activity — ideally with professional support — can achieve meaningful results without medicines, and these changes remain the foundation of weight management whether or not treatment is used. NHS weight management services, slimming programmes and dietitian-led support all have a role to play.

For people living with severe obesity, or where other approaches have not worked, bariatric (weight loss) surgery may be considered through the NHS or privately. It can be highly effective but is a major procedure with its own risks and lifelong follow-up, and it is reserved for specific clinical circumstances. It is not something we provide, but it is worth being aware of as part of the wider picture.

Medical treatment with GLP-1 medicines sits between lifestyle change alone and surgery: a clinically supervised option for eligible adults who need more than diet and activity can deliver on their own. Whichever path is right for you, sustainable habits matter.

It is worth understanding why the dose — and therefore the price — usually rises over the first few months. Treatment begins at a low introductory dose to help your body adjust, then increases in stages towards a maintenance dose. Many people stabilise on a dose that suits them rather than always climbing to the maximum, so the long-term cost is not necessarily the highest figure on the list. Because prices can change and depend on your prescribed dose, always check the current cost on the relevant treatment page before ordering.

Whatever you pay, it covers a genuine, MHRA-licensed medicine, a clinical review by our prescribing team and discreet delivery — not simply the product itself. We would always caution against treatments offered at prices that seem too good to be true, as these are a common sign of unregulated or falsified medicines.

The gradual dose titration we use is specifically designed to keep these effects manageable. Practical steps can help a great deal — eating smaller, lower-fat meals, staying hydrated, avoiding lying down straight after eating and increasing doses no faster than advised.

More serious side effects are uncommon but possible, which is why ongoing clinical support matters. You should always seek prompt medical advice if you experience severe or persistent abdominal pain, ongoing vomiting, signs of dehydration or any reaction that worries you.

Understanding the full journey before you begin helps — how doses are gradually increased to help your body adjust, what a maintenance dose involves, the side effects you might experience and what can happen if you stop. Progress is rarely linear, and most people see the steadiest results over months rather than weeks. Being informed from the outset helps you set realistic expectations, recognise what is normal and stay on track for the long term — which is exactly the kind of ongoing support our service is built around.