Glen Matten

Glen has profoundly changed my view on nutrition and supplementation with his evidence based knowledge, uber professional manner, disarming charm, and love of all things food! He is an asset to the KX team.”

Gideon Remfry, Wellness Director, KX

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Glen introduces Sirtfoods, the subject of his international best-selling book.


Glen is an award-winning and international best-selling author and is ranked among the Top 100 food industry influencers in the UK.

Meet Glen

Glen Matten originally trained in Nutritional Therapy at the Institute for Optimum Nutrition before going on to complete an MSc in Nutritional Medicine at the University of Surrey, graduating with distinction.

Glen has transformed the health of thousands of patients over 15 years of clinical practice. His extensive training and deep experience put Glen in a unique position to offer highly effective expert nutritional advice and his roster of clients includes sports stars, celebrities, and global CEOs. Glen continues to work in close collaboration with a number of medical doctors in the Functional Medicine field.

In addition to his clinical practice, Glen has worked as a research nutritionist, lectures extensively to undergraduate nutrition students and more recently medical doctors, and is head of nutrition at KX, the UKs most exclusive health club.

Glen is both an award winning and international best-selling author. His most recent book The Sirtfood Diet fast became an international publishing phenomenon. His previous offering The Health Delusion, was awarded consumer health book of the year by the Medical Journalists Association. Glen features widely in the media, with numerous forays into television, radio, and the national press, and he is recognised as one of the top influencers in the UK food industry.

Glen Matten

What’s being said about the Sirtfood Diet

This year’s weight loss phenomenon. You can eat and lose weight. You can lose weight and not feel hungry. You can drop 7lbs in 7 days and none of it will be muscle. - The Times


I’m eating like a king these days thanks to the Sirtfood Diet. - Conor McGregor - UFC World Champion & World's Most Popular Athlete 2017


A non-faddy diet that offers incredible health benefits and weight loss. I’m a huge fan! - Lorraine Pascale, TV chef and food writer.


The integrated approach found in the Sirtfood Diet is the first step toward a longer, healthier life. - Robb Wolf, New York Times bestselling author


People keep asking me my secret to looking great. The answer is Aidan and Glen’s Sirtfood Diet. Since following it, I feel unstoppable. - Jodie Kidd, model and TV personality


Glen provides a straight-talking, no frills, no nonsense approach to nutrition. As a man that questions everything, Glen doesn’t do ‘one size fits all’.

Glen’s not about fads, but facts. His strong background in nutritional medicine means he uses the latest scientific research to underpin the highly effective nutritional programmes he carefully designs for each of his clients.

Glen has a global client base, including a number of elite athletes, celebrities, and CEOs, and currently holds nutrition clinics at KX and The Queen Anne Street Medical Centre, just off Harley Street.

Glen has a meticulous approach and settles for nothing other than achieving the best for each of his patients.

For more information on booking a consultation click here

In the news Glen makes frequent forays into the media and here are some of his best bits

  • The Times
  • The Times
  • The Times
  • Cosmopolitan
  • Body + Soul
  • daily-mail-2012
  • the-times-2012
Glen Matten

"Unquestioningly the leading nutritionist in the UK; Glen's passion for health shines through immediately from first acquaintance, and only strengthens from there on. Always the first person I recommend, and I can't imagine working with anyone else." - Aidan Goggins, award winning author


Glen has successfully supported wellbeing projects for large scale organisations.

Glen heads nutrition at KX, the UK’s most exclusive health club. He has also worked with a number of companies to improve the health, wellbeing and performance of their employees. These include Virgin, HSBC, The Royal College of Physicians, and The Crown Prosecution Service.

Glen offers a bespoke and tailored consultancy service to meet the needs of your organisation.

For corporate enquiries, click here


What Glen’s patients say..

Glen's commitment to giving good advice based on sound research is very important in a world that can be overloaded with nonsense press headlines and ill-informed articles. His Masters degree and book The Health Delusion are beacons to his professional approach. His advice is priceless.

When it comes to the service Glen provides, firstly and most importantly - it works! The treatments, dietary advice and supplements that he's recommended have made the single biggest difference to my health out of anything else I've tried over the years. That's so valuable to me and I will always be hugely grateful for that.

I was beginning to feel like an old lady! Now, 10 years later, I don't feel as old as I did then. I have come off all my blood pressure medication. Glen's dedication to his subject and continuous research make repeat visits a must.

I found the service Glen provides not valuable but invaluable - from being told my partner was infertile to 3 children later…

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Glen Matten

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