Interval Weight Loss

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Welcome to the last weight-loss

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 20,000 people who have
transformed their lives

From less than $1 a day, you can:

  • Gain access to a scientifically-backed, stepped weight-loss program that leads to long-term, sustainable weight-loss.

  • Restore the damage that crash diets have done to your metabolism and your body.

  • Repair your relationship with food and exercise, so you’ll never be swayed by fads again.

  • Gain energy, vitality and an understanding of how to maintain a healthy lifestyle.

  • End the vicious dieting cycle for good.

For just $22 a month
Dr Nick Fuller

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

Interval Weight Loss for Women
Latest release

Healthy Parents,
Healthy Kids

Establishing total family wellness

Interval Weight Loss for Women
Latest release

Interval Weight
Loss for Women

Six key steps to weight loss success

Interval Weight Loss for Life
The second book

Interval Weight
Loss for Life

A practical guide to the IWL plan.

Interval Weight Loss
The first book

Interval Weight

The science behind the IWL plan.

Who is the program for?

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