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The GC & The Chef:

Gemma Collins meets her match in the kitchen, and the results are delicious

Healthy living isn’t about restriction, it’s about finding balance. That’s why we’ve teamed up with reality icon and Yazen ambassador Gemma Collins, who’s embracing her wellness journey with the support of our medical and lifestyle team, and Tristan Welch, the acclaimed chef known for making nutritious food taste incredible.

Together, they’re stepping into the kitchen to explore delicious, easy-to-make meals designed for people on their weight loss journey. These recipes support your body, your goals, and your taste buds.

Do as more than 40 000 patients sign and up for Yazen.

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Join Gemma Collins and Michelin-trained chef Tristan Welch in the Yazen Kitchen, serving up laughs, flavour, and feel-good recipes that make healthy eating simple and fun.

#GCMealChallenge - Coming soon to the Yazen kitchen

  • Ingredient Swaps One Meal, Many Ways: Simple Swaps for All Diets.
  • Fridge Raid Challenge! how to whip up something easy, healthy and delicious based on simple ingredients found in your fridge!
  • Snacking at Christmas Gemma and Tristan show you how to enjoy the festive season without falling off track, proving you can still celebrate and stay balanced.
  • Midweek meals Fast, fuss-free dinners for those nights when motivation’s low but your goals are still in sight.

Follow us at TikTok and Instagram

New episodes drop throughout the season! Follow Yazen on TikTok and Instagram and stay tuned for the next kitchen challenge.

The stars

Join Gemma Collins and Michelin-trained chef Tristan Welch in the Yazen Kitchen

Meet "the Chef" Tristan Welch

With over 25 years in the kitchen, Tristan Welch has cooked everywhere from London’s most iconic restaurants to TV screens across the world.

Quote: "I know a lot of people who come to Yazen have already tried every diet out there, and the last thing they want is another strict plan. The great thing is, healthy eating doesn’t have to be restrictive or boring."

Tristan’s career began under British legend Gary Rhodes, before he trained at the world-famous Le Gavroche with Michel Roux Jr., where he earned the prestigious Award of Excellence from the Academy of Culinary Arts. From there, he honed his craft at Gordon Ramsay’s Pétrus, helping the restaurant earn two Michelin stars, and went on to lead top kitchens across London, Scotland, and the Middle East.

“For all these reasons and more, I was inspired to get stuck in with this series, and I couldn’t have asked for a better sous-chef than Gemma Collins!”

You might recognise him from TV favourites like Great British Menu, Snackmasters, Cooking with the Stars, and Saturday Kitchen, where his down-to-earth charm and love of proper, feel-good food have made him a fan favourite.

These days, Tristan’s all about making healthy, exciting food that doesn’t compromise on flavour.

Meet "the GC" Gemma Collins

Gemma Collins is one of the UK’s most-loved media personalities, a TV star, entrepreneur and podcast host whose humour, honesty and confidence have inspired millions. Rising to fame on The Only Way Is Essex, Gemma has since built a hugely successful career across television, fashion, and broadcasting, all while staying true to her authentic self.

“Yazen are doing amazing things for people on their weight loss journey! They’ve helped me lose weight in a way that is healthy without being restrictive, and their ongoing support and care has just been amazing.

Now, Gemma is embracing a new chapter focused on health, balance, and feeling her best as a proud Yazen ambassador. Open about her own wellbeing journey, Gemma is passionate about showing that weight loss and self-care don’t have to mean giving up the joy of life, or food.

“Cooking with Tristan is so much fun, and I can’t wait for everyone to see the recipes we’ve whipped up!"

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#1

Proven method

Yazen is the original digital healthcare provider focused on comprehensive weight-loss treatment. Our scientifically supported method combines clinical support with practical lifestyle changes, under the supervision of experienced experts.

20%

Weight loss

Losing weight is hard. Maintaining it is harder. The Yazen model offers sustainable results. Our patients achieve an average weight loss of 20% during the first year.

40k+

Success stories

We are proud to have supported more than 40k people in the UK, Sweden, Norway, Spain, Denmark, Germany, and the Netherlands, to healthier lives. Now it is your turn.

Meet the treatment team

At Yazen we know that when medicines are combined with guidance and treatment from a team, weight loss success is at its best.You don't have to do it alone, together we make a difference.

Doctor
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Doctor

Located just behind your YazenCoach, the doctors ensure that your prescription is as effective as possible. All doctors at Yazen are experts in the treatment of patients struggling with their weight.

Your doctor assists you with questions about medication treatment, renews prescriptions, wants to know how you experience the effects of the medication, and assesses weight loss and any side effects. In case of side effects that do not improve with adjustments to the diet, such as heartburn, constipation or nausea, medication may be prescribed. You can also receive assistance with certificates, such as Activity on Prescription (AoP) or travel certificates.

Meet our doctors

YazenCoach
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YazenCoach

Your YazenCoach can refer you to specialists when needed. Our YazenCoaches can guide you to experts in nutrition, mental health, or fitness:

A dietitian,
Psychologist,
Or personal trainer.

Meet our Yazen Coaches

Dietitian
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Dietitian

Our dietitians can assist you in customising your diet based on your individual needs, to achieve the best treatment outcomes. This may involve providing guidance on energy intake, meal planning, food choices, and energy distribution. They also offer practical tips, including meal suggestions, guidance on creating a well-stocked pantry, and advice for dining out.Our dietitians can also help minimise the risk of common stomach side effects during the initial stages of treatment.

Meet our dietitians

Personal trainer
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Personal Trainer

A personal trainer can assist you with guidance on tailored physical activity to improve your health and enhance the effectiveness of your treatment.

By taking into account your medical conditions, any injuries, and limitations, the physical activity can be adjusted to meet your specific needs.

Meet our personal trainers

Psychologist
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Psychologist

The psychologist supports you in matters related to emotions and thoughts about body, diet, and weight. Your mental well-being affects how you eat, and at Yazen, we take into account your overall health, not just what the scale says. A weight journey is often long, and you may need to put effort into maintaining motivation and enthusiasm for the process.

The psychologist is available to help you persevere and endure.

Meet our psychologists

Become a patient

Three simple steps

1

Free consultation

Log in and discuss your unique weight loss journey with one of our nurses completely free of charge

2

Comprehensive health screening

We conduct a comprehensive health screening, including blood tests to check hormones, metabolic markers, minerals, and vitamins.

3

Treatment

Using approved weight loss injections, our expert clinicians develop personalised plans with 24/7 support from doctor, YazenCoach, psychologist, dietitian and personal trainer.
Regular consultations in the app ensure that your plan evolves according to your needs without you having to leave the house. 

Supported and motivated by your team 24/7

From your first injection, the Yazen app provides access to a 24/7 weight loss concierge service including your personal YazenCoach and full treatment team.

Expert team at your fingertips
Chat with and get counselling from your YazenCoach, doctor, dietitian, psychologist, and personal trainer. Together they determine the most effective, sustainable and healthy weight loss  journey that fits your unique biology and lifestyle.
Track your weight loss journey
Our app lets you track your progress and provides guidance and information throughout your weight loss journey.
Lifestyle tools and support from your YazenCoach
Get knowledge, guidance and motivation to make healthy lifestyle changes from your very own Yazen Coach.
Reflect and learn with Yazen Commit
In your module-based programme, you will gain knowledge, guidance and motivation to make healthy lifestyle changes.
Support from your Yazen community
Join our vibrant member community where knowledge meets camaraderie. Engage in encriching discussions and seek support on your journey in our expert-led and community-driven chat spaces.

Our Success Stories

For most people, lasting weight loss has been impossible.Until now.

Thanks to Yazen, I’ve started 2025 two sizes down, feeling healthier, happier, and finally free from the never-ending battle with dieting.

Gemma Collins is a British television personality, actress, and businesswoman, best known for her role on the reality series, The Only Way Is Essex.  Gemma started 2025 two sizes down, after just two months using Yazen's Weight Loss app and medication. “It has absolutely changed my life,” she says.

Having tried every diet, Gemma has finally found something she can actually lose weight on. She feels healthier and happier, without that constant noise in her head “You need to eat,  you need to eat.” 

Gemma is keen to share this approach with anyone that suffered their whole life like her - being bullied all her life by the media for being overweight. She will finally be able to live her best life and be free from the upset, stress and turmoil that comes with constantly trying to lose excess weight.

Starting this year two sizes down
Feels healthier and happier
A weight’s been lifted off her shoulders

"I really can’t wait to get stuck back in hiking. Mount Kilimanjaro, here I come!"

Alex, a lifelong Londoner, shares her journey with a weight loss programme combining medication and personalised coaching. After struggling with weight gain due to mental health medication, she tried various diets with little success. Thanks to daily support from her YazenCoach and a more balanced approach to food, Alex is finally on the right path. She’s now focused on returning to more challenging hikes, with plans to tackle Mount Kilimanjaro.

Lost 11 lbs in 6 weeks with the support of her YazenCoach
Reduced emotional eating and cravings
Set a goal to lose 8 stone and return to more challenging hikes
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Real people. Real results.

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Who is Yazen?

Together we make a difference - Alone is not strong.

Are you ready to change your life and take control of your weight once and for all? At Yazen, you meet a team of passionate specialists - including doctors, dietitians, psychologists, and trainers - dedicated to helping you achieve your health goals. Our unique method combines personalized counseling and tailored training with the latest and most effective medications on the market for sustainable weight loss.

Read more about us