Our mission
1,000,000 kg
Weight lost
A dedicated team
Of doctors & coaches
Care that goes further
than medication
For millions of people, losing weight is a daily struggle. They deserve help that makes a real difference. We combine medical care, lifestyle coaching and technology in one effective approach.
Our mission
1,000,000 kg
Weight lost
We have seen up close how people struggle with their weight for years, and how few existing solutions really work. As lifelong friends with a shared passion for lifestyle and health, we were already helping people lose weight more than fifteen years ago. The subject never let go of us.
But after our studies we first went our separate ways. Andreas went deeper into obesity care and worked for years at the largest clinics in the Netherlands. He coached more than a thousand people one-on-one and saw up close how big the effect of GLP-1 medication can be, but above all how much more is possible when you take lifestyle and behaviour seriously.
Jake took a different path. After playing basketball at the top level and publishing a book about lifestyle, he ended up in the world of software and technology. Healthcare platforms, educational apps, his own software company.
As friends, we often talked about obesity care and why the problem in the Netherlands kept growing. GLP-1 medication changes a lot, but an approach that truly combines medical care with lifestyle change and technology? That was missing.
Those conversations became plans. Those plans became a platform. We brought together a team of doctors who believe in the same approach. And now here we are, with real results and a mission that is far from finished.
Because this problem deserves an approach that goes further than medication alone.
Jake Prins
Founder
Andreas Niessl
Founder
The Netherlands 1,000,000 kg lighter
Together with our clients, we're working towards a million kilos of weight loss. We want to make a real difference in the health of people living with excess weight.
Total weight lost by our clients.
Our goal on the horizon.
Curious about our full impact? See our results
Why Lean Clinic?
Excess weight has been a growing problem in the Netherlands for far too long. The health risks are serious, and existing solutions simply don't work well enough. We've seen up close what works and what doesn't. That's why we combine medical guidance, lifestyle change and technology into one approach. And we see that it works.
The problem
More than half of adults in the Netherlands are overweight. Obesity is a medical condition, increasingly described as a "gateway disease" that raises the risk of more than 200 other conditions. Not just physically, but mentally too. It affects your energy, your health, your confidence.
Diets, exercise plans, weight-loss programmes, they've been around for years. Yet the problem keeps growing. Because it's a complex issue with no simple solution.
Facts and figures
1 in 2 adults
More than half of Dutch adults are overweight. 1 in 6 have obesity.
A growing problem
The number of people with obesity has tripled in recent decades and is still rising.
Medication + lifestyle works
GLP-1 medication combined with lifestyle coaching consistently shows better results in clinical research.
Digital care helps
Online coaching improves treatment adherence and demonstrably improves the results of lifestyle interventions.
Our approach
Lean Clinic is built on three pillars. Each one equally important. Together, they make the difference.
- Real lifestyle change: not diets you abandon after three weeks, but guidance that fits your life. Building healthier habits, one step at a time.
- Medical guidance: GLP-1 medication under the supervision of experienced doctors. Safe, responsible and effective. The medication is there to support you.
- Everything in one place: track your progress, stay in touch with your team, get guidance whenever it suits you. 100% online, always available.
What we stand for
Lifestyle as the foundation, not an afterthought
We started as lifestyle coaches. You can feel that in everything we do. Medication can be a powerful tool, but real change comes from changing your behaviour. We help you not just lose weight, but improve your health and quality of life.
Digital and responsible
We believe online care can actually be better. Good monitoring, easy access to your team, support when it suits you. Without compromising on quality or safety.
Honest and transparent
We're open about how our treatment works, what you can expect and what you can't. Not everyone is the right fit for our programme, and we'll tell you that honestly.
Always improving
The science around GLP-1 medication, lifestyle interventions and technology moves fast. We keep up with the latest developments and continuously refine our approach.
The programme
This is what the Lean Clinic programme looks like
Lifestyle modules, personal coaching, a warm community and ongoing medical supervision. All in one structured programme.
Reviews & experiences
Experiences with medical weight loss at Lean Clinic
Real experiences from real people
Our expertise in the media
We share our expertise across a range of national media.
Obesitas Platform
Andreas Niessl on lasting behaviour change.
Men's Health
More than half the population is overweight: how did we get here?
LEVEN! Magazine
Losing weight without surgery. Andreas shares his expertise.
KRO-NCRV
Co-founder Andreas featured in the series about the perfect body.
FunX
Podcast episode on mental health issues related to being overweight.
Gezond Eten Gezond Leven
A review of Jake's book "De Lifestyleroute".
You are not alone in this
Online guidance from Dutch experts in health and lifestyle.
“Over the past few years I’ve helped 1,500+ people lose weight, often alongside weight-loss medication.
I’ve worked at several clinics and seen first-hand what works and what doesn’t.
Together with doctors and specialists, we built Lean Clinic to make medical support digital and affordable.”
Jake Prins
CEO
Co-founder
Lifestyle professional
Sitsi Toonders
GP
BIG: 69915535001
AGB: 84110254
Ingrid Scholtes
Doctor
BIG: 99055246501
AGB: 84100204
Rashiv Pom
Doctor
BIG: 79936861601
AGB: 84132943
Sahira Boyce
Doctor
BIG: 29909891001
AGB: 84135289
Galina Dorland
Doctor
BIG: 99932007001
AGB: 84123473
Dutch experts in obesity and health.