Weight loss for men

For many, lasting weight loss has felt impossible.
Until now!

Average weight loss of 9 % per year with medication alone and 16 % per year by combining medication with lifestyle changes according to Yazen's model.

Built on the latest research

Yazen is a digitally delivered service built by doctors based on the latest research on men's health. We offer medical treatment and wellness programmes for men to give you a fresh start in life.

Yazen improves men's physical and mental well-being by treating obesity and possible sex hormone deficiency and its negative effect on health, with the help of a doctor, YazenCoach, psychologist, dietitian, and personal trainer.

The importance of correct testosterone levels

Many overweight men have low levels of testosterone.
For some, testosterone becomes so low that it can become a health risk. In addition, many men with low testosterone experience a lower quality of life as testosterone affects both mental and physical health.

There are many good reasons to keep track of your testosterone levels, from sexual health to stamina in everyday life, motivation and mental well-being. Thankfully, testosterone levels often rise in connection with weight loss and you will feel that you have your life and drive back.

Testosterone deficiency - hypogonadism, can lead to a host of symptoms such as decreased sex drive, decreased fertility, osteoporosis and decreased muscle mass/strength, to name a few. Overweight and obesity often have a negative impact on testosterone levels in men. Several studies have shown that obese men often have lower levels of testosterone compared to men of normal weight.


(Androgen Deficiency in Ageing Males)
This is a simple and quick test used to identify testosterone deficiency in men. The test consists of 10 questions relating to symptoms of testosterone deficiency such as decreased libido, fatigue, decreased muscle mass and mood changes. A good start is to complete the 10 yes/no questions in the ADAM test. You will then receive an evaluation. Yazen's comprehensive health examination includes, among other things, testosterone and oestrogen samples.

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It is unlikely that you have a testosterone deficiency.

Generally, 8-12 in testosterone is considered a gray area. If you have symptoms, you can be treated. Under 8 are almost always treated. However, you start with a weight loss to see if the testosterone rises. After a new test, an evaluation is made by a doctor. We set the right dose in consultation with the patient. Unfortunately, there is a great deal of ignorance in public health care about testosterone. In addition, there are unfortunately many perceptions about testosterone in society that are completely incorrect. The important thing is not to have a high value, it can even be of evil. The important thing is to have the right value.

What can we at Yazen help with?

Yazen treats patients and those with obesity. We help you on the way to a healthier life.

With the right weight and the right levels of testosterone.

Risks of testosterone deficiency and obesity

Men who are overweight or obese are at greater risk of testosterone deficiency for several reasons:

Adipose tissue and testosterone:
Adipose tissue has an enzyme called aromatase, which converts testosterone into oestrogen (the primary female sex hormone). When a man has a lot of adipose tissue, this conversion can lead to reduced levels of free, circulating testosterone.

Insulin resistance:
Men who are overweight or obese often have insulin resistance, which can negatively affect testosterone production.

Overweight and obesity can also lead to chronic low-grade inflammation, which in turn can affect the function of Leydig cells in the testicles, which are responsible for testosterone production.

What testosterone deficiency means for obesity

Decreased testosterone levels in obese men can worsen the symptoms of obesity. Testosterone deficiency can lead to reduced muscle mass, increased fat accumulation and reduced metabolism. These changes can in turn worsen obesity, creating a vicious circle.

Success Stories

Real people. Real results.

Daniel Küng

"I lost 34 kilos and will hopefully avoid diabetes!"

Daniel Küng rocked the weight loss with Yazen! He lost a whopping 34 kilos! With the help of our doctors, psychologists, dieticians and personal trainers, Daniel will soon reach his target weight and a BMI under 25.

Less risk of diabetes
Healthy weight
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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.

We take care of the whole you

Focusing on the whole, creates the best conditions for a body that is in balance physically and mentally, and that retains vitality while ageing, i.e. more vigour.

That's why our team of experts takes care of the most important thing in life - your health and well-being - so you can continue to take care of what matters most to you.

Our team consists of a doctor, psychologist, dietitian and personal trainer, all with a special interest in the hormonal changes that occur in the body due to ageing, lifestyle and environmental factors.