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Welcome to the last weight-loss
program you’ll ever need.
Interval Weight Loss is Australia’s only scientifically developed weight-loss and wellbeing program, that’s proven to deliver lasting results.
Developed and tested by Dr Nick Fuller from the University of Sydney, IWL takes a stepped approach to weight-loss, that’s sustainable, resets your metabolism, and allows your body to return to a healthy weight without going into starvation mode.
Unlike other programs, we’re not sexy, but we are proven—and we’re easy for everyone to follow.
Simplify your weight loss approach
Join more than 30,000 people who have
transformed their lives
Sharon
"Well I never thought it would happen but it has. I feel fantastic. I feel beyond happy."
20kg
Sharon has maintained her weight loss for over 2 years
Bet
"It’s not a quick fix, so being prepared for a slow and steady progress over time is essential"
16kg
Bet has maintained her weight loss for over 2 years
Chris
"I’m still 88kg and my knees are constantly saying "thank you".
22kg
Chris has maintained his weight loss for over 3.5 years
Mandy
"My body now seems to have accepted the fact that this is what it weighs now"
7kg
Mandy has maintained her weight loss for over 6 months
From less than $1 a day, you can:
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Gain access to a scientifically-backed, stepped weight-loss program that leads to long-term, sustainable weight-loss.
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Restore the damage that crash diets have done to your metabolism and your body.
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Repair your relationship with food and exercise, so you’ll never be swayed by fads again.
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Gain energy, vitality and an understanding of how to maintain a healthy lifestyle.
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End the vicious dieting cycle for good.
Life-Changing Conversations with Dr. Fuller
Join Dr. Nick Fuller, the globally renowned expert in sustainable weight-loss,
as he shares life-changing health insights on top podcasts worldwide.
Recent Uploads
The Doctor's Kitchen
With Dr Rupy 1 hour 30 mins
Dr Rupy catches up with Dr Nick Fuller again to discuss all things about weight loss...
Listen to PodcastDoes Meal Time Matter?
With Dr Karl 30 mins
Dr Karl and Dr Nick discuss the latest science on diet induced thermogenesis...
Listen to Podcast
Meet Dr Nick Fuller - The University of Sydney
“Everywhere I turned, I’d see celebrities and weight-loss companies spruiking diets that were not only impossible to maintain, but were damaging the metabolism they promised to fix. It’s no wonder so many people fail. And, the damage they leave behind leaves people worse off than when they began.
As a qualified healthcare professional working in this space for more than 15 years, I knew there was a better way.
It’s taken me 15 years to develop the IWL program. I’m thrilled to share with you the best knowledge science has to offer about weight-loss in a way that’s simple and easy to follow, so losing weight and keeping it off, is possible for everyone.”
We know diets don’t work, and they’re dangerous.
That’s why it’s time to undo
the damage, and heal your:
- Relationship with food.
- Metabolism.
- Desire to exercise.
- Ability to sleep deeply!
- All while working towards your ideal body weight goal.
But, it’s not just what you’ll lose, with IWL,
it’s also what you’ll gain, including:
- A scientifically proven program to prevent the weight regain that comes with diets.
- Energy, vitality and the motivation you’ve been missing.
- Tasty recipes that are quick, easy and nutritious.
- Ability to sleep deeply!
- Exercise videos to build your fitness and strength over time.
Best-Selling Books
Who is the program for?
Have the kilos been creeping up?
Reset your base weight and get your best body back.
Are you less active than you'd like to be?
Regain your energy and your lust for life.
Do you want your golden years to shine?
Restore your health and discover true wellbeing.
Sign up now, and say ‘goodbye’ to
weight gain, for the very last time.
Rated the Number 1 program for sustainable weight loss
We’re grateful to be helping people
across the globe reach their weight loss goals
Google Reviews
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Check to see how healthy and effective your diet is for long-term weight loss with this 2 minute quiz.
First Month Free
Access your free month trial for a limited time. Use the code BESTDIET22 at checkout.
Awarded the University of Sydney’s People’s Choice Award.
NB: This special offer does not apply to IWL PLUS.