Welcome to The Maas Clinic
proud winners of Leading Doctor of Integrated Medicine
at the European Medicine Awards 2022 and 2023.

The perfect balance of Science and Nature
– bespoke wellness for your body and mind.
We believe in the individual. We’ll work closely with you to not only treat your symptoms, but to find the root cause and we’ll provide the support, solutions and strategies needed to help you live a happy, healthy and active life. Find out more about our philosophy here.
Take the first step in creating a life of optimal health, performance and vitality.
IMPROVE YOUR HEALTH AND WELLBEING
Creating bespoke solutions to improve the health of your body and mind.
OPTIMISE YOUR ATHLETIC PERFORMANCE
World-class scientific expertise to enable you to achieve optimal results.
Achieve, maintain and celebrate optimal health and vitality everyday.

Scientific Wellness Retreats
Your journey to a long, healthy life
The retreat will blend the best of personalised wellness through informative workshops discussing genetics, biohacking, and ‘food as medicine’, alongside tailored treatments and excursions, all crafted to give you truly transformative insights into your health. All set in the serene beauty of the Dordogne.
Join us 11th – 16th June 2025


Laurens Maas
B.Sc. Ost., DI. Hom., I.MD (Hons)., G.Os.C.(UK), IFMCP
Dr Maas is a certified Functional Medicine practitioner and is recognised as Europe’s leading Doctor of Integrated Medicine by the European Medicine Awards.

“I believe that everyone should have the opportunity to strive for, achieve and maintain optimal health. Our approach is 100% scientific however our application is 100% natural.
We look at lifestyle factors, previous life events, hormones and gut function in great detail to build a picture that informs the bespoke improvement programme we create for each client.”
Phoenix Maas
M.Ost., AFMCP
Phoenix Maas is a certified Functional Medicine practitioner and Osteopath, dedicated to empowering and supporting our clients on their journey to holistic well-being.
“Life, much like our health, thrives in the delicate equilibrium of balance. Just as our bodies seek harmony between movement and stillness, nourishment and indulgence, so our journey through life finds its vitality in the art of balancing our choices and actions. We help restore this equilibrium and support you towards optimal health and well-being.”


CLIENT TESTIMONIALS
How we’ve made a difference
Recent News
IHT Conference – Utah
In this fall conference lecture Dr Laurens Maas discussed his multifaceted approach in using the BioScan MSA to help clients with depression, insomnia, food allergies, leaky gut and more....
Men’s Health Magazine
Andropause, often referred to as Low T, is a condition many men face but few talk about. Dr Laurens Maas recently spoke to Men's Health Magazine about the silent epidemic affecting men today....
Recipes
Fit Fudge
A healthy ‘after dinner’ treat or try it with warming cup of herbal tea. Try it, we think you'll love it!...
Books
Empowering guides
Laurens is a Doctor of Integrated Medicine (USA), with over 25 years’ experience as a leader in the field of Functional and Integrated medicine. Here he brings you a number of comprehensive and empowering guides on crucial health topics.
Our West Sussex Clinic

‘A slice of heaven nestled in the middle of nowhere.’
Our little barn is nestled in the scenic landscapes of the South Downs. Subtle and serene. You’d never believe that a world recognised health and wellness clinic weaves its magical healing blend of Functional and Integrated Medicine – the perfect blend of Science and Nature, behind these doors! Whether you’re struggling with ongoing illness, challenged by an undiagnosed issue or looking to boost your well-being, our team are here to help you achieve your health and wellness goals.
Our London Clinic

‘Truly at the centre of everything.’
Located in Chelsea, at 35 Ixworth Place, SW3 3QX, our London clinic offers everything you’ve come to expect from The Maas Clinic with the benefit of our city centre location and 1:1 time with Laurens and Phoenix. Based at the cutting edge Hum2n Clinic our specialised programmes support the symptoms of executive burnout, genetics based issues and children with neurodivergence, with access to exciting ancillary services such as HBOT therapy, Vitamin IV’s including NAD, cryo therapy and infrared.