Dr Michael Mosley and The Fast 800

Dr Michael Mosley inspired millions to live healthier lives through his pioneering work on intermittent fasting and ability to make science actionable. His knowledge, compassion, and infectious enthusiasm touched many. We will always remember his remarkable achievements and enduring legacy.

Michael's passion

“My husband, Michael, was passionate about helping people improve their health through simple, everyday habits. Together, we co-founded The Fast 800 in 2018 to make scientifically-backed weight loss and health strategies more accessible. For Michael, it was always about long-term health improvements. I’m proud The Fast 800 continues to honour his legacy and mission of helping people achieve better health through the latest science.”

Dr Clare Bailey Mosley

How to lose weight for better health according to Dr Mosley

After developing type 2 diabetes, which claimed his father’s life, Dr Mosley became a ‘human guinea pig’ to explore diet and lifestyle interventions. By adopting scientifically-backed methods, including a Mediterranean-style diet, calorie restriction, and intermittent fasting, he put his diabetes into remission. This success led to the creation of The Fast 800, co-founded with his wife, Clare, and a team of health experts.

Using Christmas leftovers to cook stir fry

Mediterranean-style food

“Scientific evidence shows a Mediterranean-style diet supports long-term weight loss, better blood sugar management, and lowers the risk of heart disease, type 2 diabetes, and other chronic conditions.” – Dr Mosley

  • Scientifically praised as world’s best diet
  • Low-carb, rich in fibre and protein
  • Promotes fat burning and weight loss
  • All cuisines are able to fit into a “Med-style diet”
  • Reduces risks of chronic disease

Calorie restriction, as required

“Research originally focused on 500-600 calories for rapid weight loss, but 800 calories proved more effective and sustainable in recent studies—how The Fast 800 was developed.” – Dr Mosley

  • Achievable for most
  • Enables 2 or 3 meals a day
  • Scientifically found to result in weight loss
  • Can be followed daily for up to 12 weeks
  • Can be followed 2-3 days per week long term

Intermittent fasting

“Intermittent fasting broadly means giving your body a break from constant eating. Numerous studies show it is a safe, effective way to lose weight, maintain it, and control blood sugar.” – Dr Mosley

  • Flexible approaches to suit you
  • Can improve sleep and mental health
  • Scientifically found to result in weight loss
  • Simple change that can have a big impact
  • Improves metabolic health long-term alongside Mediterranean-style diet

Keep up with Dr Michael Mosley’s methods. Join our free newsletter

The Fast 800 makes Dr Mosley’s findings actionable and accessible. To keep up to date with weight loss and health tips, recipes, news and offers, we invite you to sign up to our free newsletter. You'll also receive our Intermittent Fasting Guide as a bonus resource to help you on your way to better health.

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The Official Plan Based on Dr Michael Mosley’s Findings

The Fast 800 is the official hub for all the tools, resources and knowledge you need to lose weight for better health.

Guided by the latest scientific evidence

  • Long-term weight loss with better health outcomes
  • Achievable and effective diet, exercise and lifestyle habits

Working with a team of weight loss experts, honouring Dr Mosley’s legacy

  • Mediterranean-style recipes, intermittent fasting protocol and calorie control, where required
  • Flexible and personalised approaches

Qualified health professionals every step of the way

  • Available through our member community
  • Help thousands of people lose weight to make lasting change to their weight, and their health

Frequently Asked Questions

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