The Fast Diet: The Secret Of Intermittent Fasti... Apr 2026

The diet encourages high-protein, low-glycemic index (GI) foods on fasting days—such as lean fish, chicken, and non-starchy vegetables—to help manage hunger.

If you are looking to start the program, there are several resources available from Dr. Michael Mosley:

: A later iteration that suggests a "magic number" of 800 calories for fasting days to make the process more manageable and sustainable. The fast diet: the secret of intermittent fasti...

You eat a standard, healthy diet for five days. For the other two days, you limit calorie intake to 500 calories for women and 600 calories for men .

The text you are referring to is the title of the #1 New York Times bestseller , co-authored by Dr. Michael Mosley and Mimi Spencer. You eat a standard, healthy diet for five days

The book introduces the popular , a form of intermittent fasting where you eat normally for five days a week and significantly restrict your calories on the remaining two non-consecutive days. Key Principles of the 5:2 Diet

Beyond weight loss, the book explores how this pattern may improve insulin sensitivity, boost brain power (BDNF levels), and reduce the risk of chronic diseases like diabetes and heart disease. Available Editions and Resources Michael Mosley and Mimi Spencer

: Includes the latest research, new recipes, and a calorie counter.