Weight loss for better health

  • Tailored to your life and goals
  • Rapid and sustainable weight loss
  • Easy and tasty meal plan recipes
  • Reduce your risk of chronic disease
  • Maintain a lifelong healthy lifestyle
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Feel strong, capable and confident

We use the latest scientific research to create a game-changing approach to weight loss and healthy living.

Easy and tasty recipes

The Fast 800 recipes are based on a fresh Mediterranean-style diet full of protein, fibre and healthy fats.

Recipes
Guided workouts

Low-impact beginner to advanced fitness workouts designed with no equipment requirements.

Exercise
Meal replacement shakes

Made with 100% natural ingredients. A time-saving solution to ensure you never compromise on nutritional value.

Products

More than a diet programme

  • Education on science-based lifestyle best practices
  • Easy and delicious nutritionist-developed recipes
  • Tailored exercise and meal plans
  • Personalised tracker
  • Exclusive community access

Weight loss and fasting nutrition

  • Keep you full and satisfied
  • No added sugar or simple carbs
  • High in protein, fibre and quality fats
  • 100% vegetarian and made from natural ingredients
  • Essential vitamins and minerals

Flexible weight loss approaches to suit you

The Very Fast 800

Short-term, rapid weight loss using 800-calorie fasting days for up to 12 weeks.

The New 5:2

Intermittent fasting with two 800-calorie days per week to lose weight steadily.

The Way of Life

No calorie restriction, just nutritious food for weight maintenance and health improvement.

Chris and Lindsay's life-changing lifestyle

  • Aches and pains disappeared
  • Eczema cleared
  • Enjoying exercise
  • Full of energy
  • Lost 38kg together

As seen in

Our story

The Fast 800 was developed by Dr Michael Mosley and a team of doctors and weight loss experts. Our programme, and range of health support products, including meal replacement shakes, help people lose weight, stay healthy and live longer.

Dr Mosley was committed to using scientific evidence to help people lose weight for better health – not just a “better” body. This foundation means The Fast 800 is rooted in methods that enable long-term weight loss and better health outcomes.

We have proudly supported tens of thousands of people achieve just that, and will continue to honour Dr Mosley’s legacy to help more people into the future.

Try the Programme for free

Sign up today and your 7-day free trial begins immediately. Week 1 of your programme will start on: Monday 23rd December

Frequently asked questions

Browse through our most commonly asked questions

How much does the programme cost?
What's included in the Programme?
How does the free trial work?
Who should avoid a low calorie diet or fasting?
How much weight will I lose?
Can I re-start the 12-week Programme after I start?