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Start Michael Mosley's weight loss programme for better health

7 day free trial

Based on science, designed for life

Weight loss for better health

Working with Dr Michael Mosley, we use the latest scientific research to create a game-changing approach to weight loss and healthy living.

Through a 12-week supported programme, an ongoing monthly subscription, an engaging community and a range of products to support your journey, The Fast 800 is here to help you maintain a life-long healthy lifestyle.


How we help

The Fast 800 is the umbrella term for a healthy lifestyle based on scientific evidence, encompassing diet, movement and mindfulness.

Our programmes, products and resources are developed alongside Dr Michael Mosley and based on years of experience with fasting, the 5:2, high intensity interval training (HIIT) and the Mediterranean diet.

The goal of The Fast 800 and our online programme is to empower you with the tools and knowledge to live a healthy lifestyle long-term. As a result, there are three flexible dietary approaches that can be followed and are designed to suit your goals and circumstances; you can switch easily between each approach as your needs change.

Our Story

We are a group of doctors and health professionals who grew frustrated with the increasing gap between what has long been widely accepted as “healthy eating” and the latest evidence on what actually works.

Based on some of the most promising and studied areas of research, Dr Michael Mosley and a team of professionals developed The Fast 800 online programme, shakes and multivitamins, to help people lose weight, stay healthy and live longer.

What our community says about us

"I lost 26kg in 24 weeks!"

Before trying The Fast 800, I had no structure to my meals. Thanks to The Fast 800, following The Very Fast 800 and then The New 5:2 on the online programme, I’ve lost 26kg and my mind is so much clearer.

- Tracy

“I loved the exercise videos, it was like having my own personal trainer!”

- Clarissa, Worcestershire

Lost 12lbs

“One word-Brilliant! I lost 28lb in 9-10 weeks and 7 inches off my waist. Also dropped 2 clothes sizes. Love this programme! 👍 I can’t praise The Fast 800 enough!!!”

Anne, Country Durham

Lost 13kgs

Start your 7-day free trial today!

Access your meal plan, shopping list, recipes, exercise plan and Health Coaches any time, anywhere. This newly upgraded Online Programme is interactive, easy-to-use and mobile-friendly.

The Fast 800 Online programme

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