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Health and Wellbeing Programs | Interval Weight Loss

Lose the weight and
keep it off for good.

IWL is a clinically proven online program, where you’ll gradually build habits that keep the weight off for good.

Find the right program for you

Backed by Health & Government Partners

Dr. Nick Fuller’s research, delivered as a step-by-step program

Independently validated and ranked the #1 program for sustainable weight loss in a study from the University of Wollongong. [1]
Approved and backed by Australia’s major health institutes and health insurers.
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Dr. Nick Fuller

Leading Obesity and Metabolic Health Expert, 4x Best Selling Author

Losing weight is hard,
keeping it off is harder

IWL is built from over a decade of clinical research and real-world testing to stop the
cycle of losing and regaining weight.

Work with your biology, not against it

Alternate between weight-loss and maintenance months, so your body adapts instead of rebounding.

Gradually implement habits one at a time

Learn small, sustainable changes one at a time so nothing feels overwhelming.

No rigid meal plans or calorie counting

You’ll adapt the method to your lifestyle, not the other way around.

Slow but sustainable for life

No crash diets or restrictions. Progress is steady, safe, and designed to last.

Find the right program for you

Featured in 1,000+ International Media Stories

For those who just
wanted something that lasts

What to expect on IWL

The first three months are your introduction. This is where you learn the IWL habits, reset your body, and build a life-long routine that is sustainable.

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Learn the eating plan and ease into new habits

Month 1 - The body reset and habit foundations

The first month is about easing in, not rushing in.

You’ll onboard, get your first simple wins, and learn how to set up the IWL system at home.

This month resets your body and undoes the stress of past diets, instead of pushing for fast results.

Start layering in exercise

Month 2 - The first weight loss phase

Once your body is stable, you’ll begin your first weight-loss phase.

The focus is on small, realistic food adjustments and movement that fits into your life.

You’ll feel the changes are easy to sustain.

Allow your body to adjust

Month 3 - The first weight-maintenance phase

Losing weight without a break stresses the body.

This phase gives your body time to rest and lock in your new weight, instead of fighting to regain it.

You’ll also see how sleep supports long-term weight management.

Continue until your goal

Beyond 3 months - Alternating to keep a sustainable rhythm

From here, you’ll alternate between weight-loss and maintenance months until you reach your goal.

The rhythm becomes second nature, and with continuous support, you’ll always know what to do next.

Real healthcare professionals
who understand you

Meet our team of qualified dietitians, legally accredited through the APD, Australia’s official regulatory body for dietetics.

Christina Forysth

BSc, MNutrDiet

Melissa Men

BSc, MNutrDiet

Claudia Khalil

BSc, MNutrDiet

Debbie Kertesz

BSc, MNutrDiet
Find the right program for you

Recognised by private health insurers and Medicare for eligible rebates

Today is the easiest it will ever be

As we age, our biology only fights us more.
Each month you wait makes getting back to health harder.

Find the right program for you