Exclusive Dr Michael Mosley Interview: The Fast 800 And Why It Works

Jaymes Gleeson


Aug 27, 2021

The Carousel’s health expert Jaymes Gleeson talks exclusively to the esteemed TV presenter and author Dr Michael Mosley about why intermittent fasting really works.

Five years ago Dr Michael Mosley started a health revolution with The Fast Diet, introducing the world to the incredible power of intermittent fasting. Since then, Dr Michael Mosley has been on a journey to bring the latest groundbreaking science to modern-day diets. His international bestselling book The Fast 800 brings the ultimate guide to fasting, weight loss and long-term good health, and the magic number of calories: 800. Now, the companion cookbook The Fast 800 Easy written by Dr Clare Bailey – GP and Dr Mosley’s wife – and acclaimed food writer Justine Pattison has arrived.

Baked Nectarines with Blackberries
Baked Nectarines with Blackberries

Speaking about his journey to The Fast 800, Dr Mosley says: “It started with realising that the low fat diet wasn’t really the way to go and that a diet with healthy fats and a decent amount of high quality protein is much healthier and more satisfying.

“I then moved into eating legumes. Today I eat much less white and brown rice and much more lentils. I then realised if you’re going to lose weight and need to lose a significant amount like I did back in 2012, then you’re going to have to do something a bit drastic, not simply making minor modifications to your diet.

“And that led me to the benefits of rapid weight loss and that in turn led me to the Fast 800. On top of that I include exercise, particularly high intensity training. Short bursts of intensive exercise can be hugely beneficial so if you’re going out for a walk, go brisk and push yourself a bit. And also the role of breathing for managing anxiety and helping you sleep. All of these things have evolved over time and I incorporated them all into the Fast 800 approach. So it’s a multi-dimensional approach based initially around rapid weight loss but at it’s heart having the mediterranean-style diet.”

So what would you say to those people struggling to lose weight?

“This approach completely does work, this has been the subject of numerous randomised controlled trials and people are able to lose weight and keep it off in the long term following this approach,” says Dr Mosley. “We know from studies, people lost an average of 10kgs and even after 3 years they were still 7kg down and thats life changing. Even if you lose 3kg, that can have significant benefits to your health, it will improve your sleep, it will decrease your risk of developing diabetes and heart disease. Even quite modest weight loss can have big changes to your life, so do it, do it now. Most of us have a lot of years to live and we want those years to be healthy.”

The Fast 800 Easy

The Fast 800 Easy (RRP $35) by Dr Clare Bailey and food writer Justine Pattison, is a companion cookbook to Dr Michael Mosley’s The Fast 800. The book includes 130 brand new, quick and simple recipes for the 800-calorie fasting days. As well as making mealtime fuss-free, there are options to adapt meat dishes for vegetarians, and the other way round; plus easy additions to boost recipes either for non-fast days or for feeding the whole family.

Dr Michael Mosley
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By Jaymes Gleeson


J. A Gleeson is a health writer for The Carousel and Personal Trainer at Tribe Social Fitness, in the Sutherland Shire, Sydney. He has over 25 years experience as an athlete, athletics coach, consultant, personal trainer, educator and independent researcher. Jaymes won an Athletics Scholarship and studied in the United States in 1991. - San Francisco State University (Psychology, Nutrition, Athletics) - American Collage of Sports Medicine (Personal Training) Throughout the 90s he worked as athletics coach and personal trainer in the US. In the early 2000s, he worked in Snow Sports throughout Japan and returned to Australia in 2008 to continue wellness research and personal training in high end health clubs in Sydney.


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