About  obesity

The view of obesity is often that people have themselves to blame. That they are characterless and that it is their own fault that they are fat. New knowledge and modern research show that this is not true. The more we understand about our hormonal system, the more we realise that obesity or morbid obesity is a hormonal disorder. Satiety and hunger are controlled by the hormones in the stomach.

Are you someone who has tried "everything" and is ready to give up on your weight loss efforts?​​

You know almost everything about energy content, calories, dieting, and various ways to increase your metabolism - but eating moderate portions and trying to ignore thoughts about food and eating is a difficult challenge in everyday life.

Your appetite regulating hormones make it a constant battle between your knowledge and your behaviour. The hormones are constantly egging you to eat more, putting a damper on your weight loss plans.

But thanks to the latest research in all the areas that affect our eating and our weight, there are now new possibilities for those who want to lose weight.

Read more about how you can get help.

Illustration of a man looking worried.
A lighter and healthier UK

Further reading

Read more  to understand what health benefits you can achieve, what treatment options are available and how you can regulate your appetite.

Calculate when you can reach your target weight

Fill out your height, weight and target weight, to calculate your BMI and find out when you can reach your ideal weight.

Goal weight

Your BMI is:

Only in exceptional cases do we treat patients with a BMI below 27.Create an account to get an individual assessment. Your BMI at your target weight is: 16.7

You have entered a weight that gives a BMI that is below 20.A BMI between 20 and 25 is considered by most people to be the healthiest.To get an individual assessment, you can create an account.

Oops! Something went wrong while submitting the form.

Frequently asked questions

Below we list the most frequently asked questions about our service. If you have other questions or concerns, please contact us and we will help you.

Which medications do you use for weight loss?

We prescribe the very latest weight loss injections (known as GLP-1). Prescriptions are based on individual assessment to determine the best treatment. 

Do I have to take weight loss injections for the rest of my life?

When you stop taking the injection, the results can be reversed meaning you have to start your weight loss journey again. However, it’s not dangerous to stop taking the medication and start again if you notice that you begin to gain weight. 

With lifestyle changes including diet and exercise, some patients may achieve an energy balance after reaching a healthy weight and not need to go back on the medication. Yazen offers a loyalty pricing plan for those who choose to commit long term.

Who can receive medication for overweight/obesity?

Weight loss injections are recommended for people with a BMI of 30+ or 27+ with certain pre existing medical conditions including high blood pressure, elevated blood lipids, elevated blood sugar, atherosclerosis and sleep apnea syndrome. 

The medications can also be used to maintain weight loss achieved through dieting or weight loss surgery. 

What side effects may I experience?

Because it is the body's own hormone that is used, which has only been modified to slow down its breakdown, the side effects are few and mild. In the larger studies that have been conducted, the side effects are relatively similar between  test groups taking placebo and test groups taking medicine. Side effects are most common at the beginning of treatment, which is why the initial dose is low and increased slowly.

You may experience nausea, gas, and diarrhoea, mild gastritis, or constipation, but with the support of a dietitian, most symptoms can usually be avoided.