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The Fast 800: How to Combine Rapid Weight Loss and Intermittent Fasting for Long-Term Health

3.50  ·  Rating details ·  7,628 ratings  ·  243 reviews

Six years ago, Dr Michael Mosley started a health revolution with the 5:2 Fast Diet, telling the world about the incredible power of intermittent fasting. In this book he brings together all the latest science - including  a new approach: Time Restricted Eating - to create an easy-to-follow programme.

Recent studies have shown that 800 calories is the magic number when it c

Kindle Edition, 252 pages
Published December 27th 2018 by Short Books
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Jun 28, 2019 rated it it was amazing  ·  review of another edition
I started this diet on the 24th June 2019. And I just can’t praise it enough. It was the right diet at the right time.
When I first started I stuck to the 800 kcals. I soon discovered this wasn’t enough (more on this at the end). Over the months I’ve adapted this to suit and I now have the perfect diet for me.

I’ve lost 31lbs in 6 months and after the first couple of weeks it was easy. This includes 3 holidays and more meals and nights out than I can count. Losing weight is all about finding the r
Lorraine Lesar
Mar 25, 2020 rated it it was amazing
5* for the theory.
I’ve now got to implement the theory into practice 😳.
Wish me luck...
The Cats’ Mother
I first became aware of Intermittent Fasting or the 5:2 diet a few years ago when a few friends were enthusiastically describing the benefits of it. I tried it without doing any reading, and barely managed the first day because I was just too hungry. Inspired to try again by someone who is roughly my height & size and had lost 5kg fairly quickly, I gave it a go, and quickly worked out for myself the major new modification in Mosley’s plan - that 500 is too few calories for most people but 800 is ...more
Dec 05, 2019 rated it really liked it  ·  review of another edition
Shelves: netgalley, health
Dieting revisited!

A combination of ideas put forward about food, exercise and losing weight by Mosley are ringing bells with me. Particulars he's mentioning are factors my doctor has been raising with me. Although my need is more to do with excess weight putting pressure on my arthritic knees.
The book is pithy, easy to read, not too complicated in its explanations, fairly straightforward and most importantly, held my interest.
The things that struck me most included:
that Mosley gives "a number of
Jul 12, 2019 rated it really liked it  ·  review of another edition
Shelves: arc
I saw the BBC documentary a while back and was fascinated by the theory and successes of the 5:2 diet so had to have a read of the updated Fast800 Diet.

The in depth explanations and the science behind intermittent fasting along with the health benefits definitely gave me food for thought (pardon the pun, ha!). If I'm honest, I feel I got more out of the first half of the book, though for those starting out with dieting the recipes and exercise advice would prove useful.

Arc provided by Netgalley
Jan 20, 2019 rated it liked it
I liked the fact it was all updated but when you re read 5:2 from 2012 you see just how much the advice has changed which is a bit disconcerting- how do we ever know we are following the best advice? So 2012 was all ‘just fast for 2 days and eat whatever you want for the other 5’ (which never worked for me) and ‘low calorie does not work for people and science has proved people put it all back on in the long term ‘and now it’s all ‘very low calorie is the way to go as the quick results inspire y ...more
Feb 04, 2019 rated it liked it  ·  review of another edition
This book is in every bookstore window here in Melbourne. I saw Mosley interviewed on a local TV show and thought he had some really good ideas. This books seems to be some re-hashing of things I've read elsewhere. Nevertheless, I'm trying the regimen and will report back. ...more
Erica Clou
In 2015, I did 5:2 and lost about 15 pounds. I stopped doing the diet and gained back the weight in two years. I lost the weight at the same slow rate as I have on any other diet (WW, Atkins, arbitrary calorie limitation). Back then, time-restricted eating wasn't a big thing but I quickly realized that if I was going to limit to 500 calories I had to put off eating as long as possible. Since I've gained the weight back and read tons of diet and nutrition books, I've come to the conclusion that a ...more
Jan 25, 2019 rated it it was amazing  ·  review of another edition
I love a good Michael Moseley book. Well researched, simple to understand and backed up by science there are so many gems in this book.
Jul 08, 2019 rated it really liked it
Shelves: non-fiction
Clearly and convincingly sets out the scientific research which (assuming it’s true) can help you maximise your health – Time Restricted Eating, Intermittent Fasting and HIIT. I don’t think it works so well as a ‘diet book’ – the recipes and menus are too limited – but that’s not why I read it anyway.

Thanks to NetGalley and the publisher for this ARC.
Carol -  Reading Writing and Riesling

My View:
Dr Michael Mosley delivers another powerful and informative, motivating read, that introduces us to recent science based theories on managing your health that he has personally explored. I like his personable approach, his willingness to put his body on the line in the name of medical research is commendable.

As always, the writing here is accessible, the data/evidence presented in clear and concise ways that make choosing good health a realistic outcome. TRE (Time Restricted E
Guilherme Zeitounlian
Apr 08, 2019 rated it it was ok
This is not a great book.

(But it's still better than his first one.)

It mainly teaches people how to lose weight by doing a very low-calorie diet (800 kcal per day).

It suggests you start eating only 800 kcal every day, and then move to doing it twice per week.

And it incorporates time-restricted feeding to the mix.

I'm not even sure why I read it.
Sarah Owen
Feb 06, 2019 rated it it was amazing  ·  review of another edition
This is a life transforming book, it’ll cure you!

Easy to follow and backed up by the best research, I found it highly motivating and a really interesting read.

Kelly Long
Aug 11, 2019 rated it really liked it  ·  review of another edition
Thank you to Netgalley and the publisher for providing this book in exchange for an honest review.
This is an excellent book on the different types of intermittent fasting and a couple of different diets. Dr Mosley does an great job explaining various studies that back up his teachings. He also explains how these options can reverse diseases and overall improve health, not just for weight loss.
Aug 19, 2020 rated it really liked it
This is a very easy to read book, filled with research, useful tips, evidence and recipes. It's an update/re-write on Mosley's 5:2 diet book. Chapters include one on why we put on weight in the first place - and it's not as simple as 'eat more than we need' - there are decades of past diet advice and food industry motivations to overcome. The book is based around a healthy mediterranean diet (not the pizza and pasta!) filled with fish and fresh vegetables. Activity is also important but you don' ...more
Jan 07, 2019 rated it it was amazing
Practical health advice that works!

I've followed Dr Mosley's work since watching the BBC Horizon documentary on fasting. I started intermittent fasting to become comfortable with being uncomfortable and avoiding eating poor food when travelling for business.

This latest book refines his advice based on the latest Scientific research. It is focused on the ideas of intermittent fasting (reducing your calorie consumption to 800 or less each day - which is surprisingly easy) and the Mediterranean die
Feb 11, 2019 rated it really liked it  ·  review of another edition
This isn’t rocket science and there’s lots in here that I already know. However sometimes it’s good to take stock, read and get the diet back on track. I’m not up for the 800 calories for 2 weeks plus but 5:2 is certainly doable. Lots of science to back up the claims which is useful. And most importantly some lovely recipes to try out. Meal planning and good food to try. Got to be worth a go!
Jul 08, 2019 rated it really liked it  ·  review of another edition
A refreshingly practical and hype-free book about diet and disease prevention.

I like that Mosley shows the rationale and the scientific research behind different kinds of restricted eating patterns that can achieve the same results. Clearly written and informative. The second half, with exercise advice, recipes, meditation info etc seemed more like filler.
Excellent and informative.

Dr Michael Mosley is a motivated professional health practitioner. In this book he draws on scientific research to support dietary suggestions for those with diabetes mellitus. Therefore, the underlying trope is to improve health for those who have tried many other means of solving this and other health problems. His own experience with Type 2 diabetes (and pre-diabetes) set him on the path to discover ways to improve the prognosis. On the way, he uncovers some interes
Dr. Mosley combines the latest science and thinking on diet and weight loss into a comprehensive lifestyle program that provides both immediate and long-term results. This book includes the how and the why for 2 to 12 weeks of an 800-calorie, low-carb, Mediterranean style diet, which is then followed by Dr. Mosley's own 5:2 diet for as long as it takes. He has also discovered that results may be realized even more quickly by concurrently using a Time-Restricted Eating technique during both diet ...more
Jul 15, 2019 rated it it was amazing  ·  review of another edition
A highly informative book on improving one's health: how to lose weight, reverse diseases, boost brain health, and more. The author presents a three-phase program designed to help you achieve these results. The book also includes meal plans and recipes for the reader to try. A must have for anyone looking to improve their overall health.

Thank you to Michael Mosley, NetGalley, and Atria Books for an ARC of this book in exchange for an honest review.
Sep 23, 2020 rated it liked it
I read this book in 2 days. It was very matter of fact, and had good information for an absolute beginner. It was definitely helpful, but I found the content rather redundant. Overall worth the read if you're interested in beginning intermittent fasting with fast 800. There's also a companion cookbook. ...more
Simon Adams
Jul 08, 2021 rated it it was amazing

I was interested so I read it. The ‘science’ appears to be backed up with evidence and the results I’ve seen in others are astounding. Really easy to read without patronising or lecturing.

Do it or don’t do it; it makes no difference to Mosley. He just gives you an option; Underneath a massive neon sign.
Matthew Metcalf
Mar 22, 2019 rated it really liked it
Time to give this a try
Kushal Kushlendra
Apr 26, 2019 rated it really liked it  ·  review of another edition
Get the book, set your goals and Go.
Heather Bennett
The Fast800 Diet has some interesting information and recipes. Well written and easy to read. This book makes some good points.
Nov 05, 2019 rated it really liked it
Sounds like something to try, atleast for 2 weeks. I also like the idea of intermittent fasting.
Ranga B
Jan 27, 2019 rated it it was amazing  ·  review of another edition
I have always been fan of Michael from his BBC documentaries. I have read all his books and was following 5:2 diet. Now with Fast 800. Myself and my family will start this diet - not so different to what we already doing. But introducing TRE will be additional take. Thanks Michael for this book and what a great way to start the year !!
Jun 28, 2019 rated it really liked it  ·  review of another edition
This review has been hidden because it contains spoilers. To view it, click here.
Fiona Humphries
An easy read in a conversational style. I like the comprehensive scientific information and the grounded, real approach. The recipes make this doable. It is exciting to see some of the advances science is having in the field of nutrition which support wellbeing when someone has challenges such as high blood pressure, diabetes and the like. Keeping this in mind, I have come away from this book feeling uplifted.
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Goodreads Librari...: Book cover addition 2 18 Dec 08, 2019 07:19AM  
8 Week Blood Sugar Diet or the Very Fast 800 1 7 Jan 15, 2019 04:48PM  

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Michael Mosley (born 22 March 1957) is a British television journalist, producer and presenter who has worked for the BBC since 1985. He is probably best known as a presenter of television programmes on biology and medicine and his regular appearances on The One Show.

Born in Kolkata, India, the son of a bank director, Mosley studied philosophy, politics and economics at New College, Oxford before

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