The 5:2 diet

The 5:2 diet,

or fast diet, is a diet which involves severe calorie restriction for two non-consecutive days a week and normal eating the other five days, which originated and became popular in the UK, and spread in Europe and to the USA.[1] It is a form of intermittent fasting.[2]

The diet is claimed to promote weight loss and to have several beneficial effects on health; however, there is little evidence about the safety and effectiveness of the diet.

A review of a book promoting this diet by the Academy of Nutrition and Dietetics concluded, “It is not something that is good behaviourally, and it is not a realistic long-term solution. It also does not complement other healthy lifestyle components, such as being physically active and achieving quality sleep,” before finally concluding that diet is not recommended.[6]

“The UK’s Hot New 5:2 Diet Craze Hits The U.S. – Weight Loss Miracle?”. Forbes. 17 May 2013. Retrieved 10 February 2014.
Emma Young, New Scientist (2 January 2013). “Hunger games: The new science of fasting”. Thomasville Times Enterprise. Retrieved 3 January 2013.
Mosley, Michael J. “The 5:2 diet: can it help you lose weight and live longer?”. The Telegraph. Retrieved 11 September 2012.
“The 5:2 diet – Can starving yourself twice a week make you live longer?”. Yahoo! Lifestyle. 7 September 2012. Retrieved 11 September 2012.
“Does the 5:2 intermittent fasting diet work?”. Health News – NHS Choices. UK National Health Service – 14 January 2013 (Updated May 2013). Retrieved 10 February 2014.
Lemond, Angela. “The Fast Diet Book Review”. Academy of Nutrition and Dietetics. Retrieved 19 May 2014.
Mosley, Michael J. (5 September 2012). “Eat, Fast & Live Longer”. Horizon. Episode 49×03. BBC. 2. Retrieved 10 February 2014.
Stone, Philip (22 February 2013). “Public appetite for fasting grows: four intermittent fasting titles earn bestseller status; Mary Berry beats Paul Hollywood in a baking battle; and children’s sales slump due to a calendar quirk”. The Bookseller: 17.
“How to diet”. Live Well – NHS Choices. UK National Health Service – 9 December 2011. Retrieved 10 February 2014.
Trueland J (2013). “Fast and effective?”. Nursing Standard (Pictorial) 28 (16): 26–27. doi:10.7748/ns2013.

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