Onze missie
1.000.000 kg
Gewichtsverlies
Gedreven team
Van artsen & coaches
Zorg die verder gaat
dan medicatie
Afvallen is voor miljoenen mensen een dagelijkse strijd. Zij verdienen hulp die echt verschil maakt. Wij combineren medische zorg, leefstijlbegeleiding en technologie in één effectieve aanpak.
Onze missie
1.000.000 kg
Gewichtsverlies
We hebben van dichtbij gezien hoe mensen jarenlang worstelen met overgewicht, en hoe weinig bestaande oplossingen écht werken. Als levenslange vrienden, met een gedeelde passie voor leefstijl en gezondheid, hielpen we al ruim vijftien jaar geleden mensen met afvallen. Het onderwerp heeft ons nooit losgelaten.
Maar na onze studie gingen we eerst ieder onze eigen weg. Andreas verdiepte zich verder in de obesitaszorg en werkte jarenlang bij de grootste klinieken van Nederland. Hij begeleidde meer dan duizend mensen één-op-één en zag van dichtbij hoe groot het effect van GLP-1-medicatie kan zijn, maar vooral hoeveel meer er mogelijk is als je leefstijl en gedrag echt serieus neemt.
Jake sloeg een andere weg in. Na op topniveau te hebben gebasketbald en een boek over leefstijl te hebben gepubliceerd, belandde hij in de wereld van software en technologie. Zorgplatforms, educatieve apps, zijn eigen softwarebedrijf.
Als vrienden spraken we vaak over de obesitaszorg en waarom het probleem in Nederland alleen maar groter werd. GLP-1-medicatie verandert veel, maar een aanpak die medische zorg écht combineert met leefstijlverandering en technologie? Die ontbrak.
Die gesprekken werden plannen. Die plannen werden een platform. We verzamelden een team van artsen dat gelooft in dezelfde aanpak. En nu staan we hier, met echte resultaten en een missie die nog lang niet af is.
Want dit probleem verdient een aanpak die verder gaat dan alleen medicatie.
Jake Prins
Oprichter
Andreas Niessl
Oprichter
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.
Feiten en cijfers
1 op de 2 volwassenen
Meer dan de helft van de volwassen Nederlanders heeft overgewicht. Bij 1 op de 6 is sprake van obesitas.
Een groeiend probleem
Het aantal mensen met obesitas is de afgelopen decennia verdrievoudigd en neemt nog steeds toe.
Medicatie + leefstijl werkt
GLP-1-medicatie in combinatie met leefstijlbegeleiding laat consistent betere resultaten zien in klinisch onderzoek.
Digitale zorg helpt
Online begeleiding verhoogt therapietrouw en verbetert aantoonbaar de resultaten bij leefstijlinterventies.
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
Why people choose Lean Clinic
Real experiences from real people
Exactly what you need for a lasting lifestyle change
“I'm really happy with Lean Clinic. The online contact is open, honest, knowledgeable and dedicated. As a client you truly feel seen and heard. These are experienced professionals who understand what you need at every stage of a weight-loss journey. An extensive library, helpful tips, clear information, a good loyalty programme, it all supports you in building a sustainable lifestyle. And Lean Clinic is affordable. I'm a fan!”
Professional, warm and sustainable support
“From the very first moment everything felt clear, transparent and carefully organised. No unrealistic promises or one-size-fits-all approach, but a programme that genuinely looks at the person behind the goal. Respectful, engaged and approachable, without ever being pushy. You feel heard and taken seriously, and that makes a real difference when you're working on something as personal as your health.”
An educational journey with excellent support
“Really happy with my programme at Lean Clinic. I received expert advice, the platform is easy to use and the modules are very informative. They're also always easy to reach for quick questions or extra guidance.”
So much more than just losing weight
“A team that's positive, thinks along with you and never judges. The combination of guidance from a doctor and coaches builds real trust, and the weekly online programme helps you build new habits in a gentle way. No harsh perfectionism, just room to be human.”
A programme with great guidance
“Clear information on the website. The intake with the doctor was scheduled quickly and went smoothly. Throughout the programme you're well supported, with tips and advice on nutrition, exercise and sleep.”
Great support and a lovely app
“I hesitated for a long time, but I'm glad I eventually started the programme at Lean Clinic. Lovely support, they listen well and put together a plan with you. A great app with lots of information and tips, where you can also track your progress. I'm really happy!”
Easy-to-use online programme
“Easy-to-use online programme, clear and well-structured modules, and communication is smooth. Very satisfied.”
Switching was easy, and I'm saving money too
“Switching was sorted in no time and I'm now saving a lot of money every month. The doctor also took time for me, which I really appreciated. The website is very easy to use. I'm absolutely delighted!”
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?
NU.nl
How to protect yourself from triggers in an environment that makes you gain weight.
LINDA.
Millions of Dutch people don't exercise, and the consequences are serious.
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".
“Over the past few years I’ve helped 1,000+ 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.”
Andreas Niessl
Co-founder Lean Clinic
Jake
CEO
Co-founder
Lifestyle professional
Andreas
Lifestyle coach
Co-founder
AGB: 90121662
Sahira
Doctor
BIG: 29909891001
AGB: 84135289
Rashiv
Doctor
BIG: 79936861601
AGB: 84132943
Galina
Doctor
BIG: 99932007001
AGB: 84123473
Dutch experts in obesity and health.
Blog about medical weight loss
Read our articles about medical weight loss, lifestyle, nutrition, medication, obesity, exercise and healthy living.
Ontsteking en obesitas: waar start de vicieuze cirkel?
Een diepgaande blik op de complexe relatie tussen obesitas en chronische ontsteking, hoe ze elkaar versterken, en hoe leefstijl en nieuwe behandelingen zoals GLP-1 medicatie deze cirkel kunnen doorbreken.
Eerste GLP-1 medicijn goedgekeurd voor MASH in Europa
Europa keurt eerste GLP-1 medicijn goed voor MASH-behandeling. Semaglutide (Kayshild) biedt hoop voor miljoenen met leverziekte.
GLP-1 receptoragonisten en hun rol in het verlagen van infectierisico's
Ontdek hoe GLP-1 receptoragonisten niet alleen diabetes behandelen, maar ook het risico op ernstige infecties verlagen. Lees meer over deze veelbelovende bevindingen!