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Summary

We all know that food is medicine - yet going without food is one of the single best things you can do for your health. Short, doable fasts, when strategically timed, are an incredibly powerful metabolic intervention, dovetailing perfectly with a ketogenic diet to activate your body’s fat-burning mode. This in turn can ward off insulin resistance, reduce oxidative stress and inflammation, optimize brain function, prevent neurological problems, support weight loss, and more.  

In this in-depth yet accessible guide, Dr. Joseph Mercola explores the profound health benefits that result when ketogenic living and well-planned fasting are combined. Topics include:  

  • How our food is making us sick and what we can do about it 
  • The physiology and mechanisms of fasting, including stem cell activation 
  • How the cyclical ketogenic diet - with fasting included - differs from the conventional keto diet 
  • How fasting works and how safe it is for you 
  • How regular one-day fasts support fat burning and detoxification while minimizing hunger and side effects 
  • How to monitor your progress with lab tests 
  • And much more  

“This will be an exciting journey for you,” Dr. Mercola writes. “I am beyond excited for you to implement what I consider to be one of the most powerful physical strategies to help you not only recover your health, but also improve it to levels you likely never believed were possible.”

©2019 Hay House (P)2019 Hay House

What listeners say about KetoFast

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    2 out of 5 stars
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    2 out of 5 stars

Loves an acronym

Not well referenced, unlike Jason Fung’s seminal book on fasting, which is quoted from, but is contradicted when it comes to toxin overload from fasting and extended fasts. Where are the references to studies highlighting the problematic toxin release while fasting? Not properly edited.... referred to growth hormone as being “catabolic” and that “one cell of glycogen is stored with three or pounds of water.” Relentlessly self publicising products and books and his app. Boring stuff about infrared saunas and how to make them.... very ocd about many things including weighing food and electromagnetic fields. The cyclic diet and “ketofast” don’t really make sense.

Don’t waste your money on this. The Complete Guide to Fasting, by Dr Jason Fung is an infinitely superior book. Well referenced and researched and far more interesting and informative.

4 people found this helpful

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money grab as you need to buy a cook book

for me this was a bit disappointing to follow this plan you need need to purchase a subsequent cookbook to ensure your following the plan, i feel the recipes should be included in this book.

Overall content was ok, but nothing ground breaking if you follow the latest health podcasts, and cyclical keto diets are regularly discussed. The key part missing was the keto fast receipes that are the fasting days where you need to consume 300-600 kcal.

1 person found this helpful

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Step by step book

An excellent explanation of what, how and why of doing this keto fast book

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Excellent

This book has helped me understand ketones and helped me understand some other bodily functions and on the back of this I am going to attempt this diet to improve my health. All I a say is brilliant.

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Dr Mercola Makes complete sense

This is a Man you can believe (based on my opinion and the fact I have been subscribed to him for 5 years) Obviously he is making living selling products but it all relates back to the information/well being message he is trying to get across. The story told well and great content.
He means well

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  • KAWAM
  • 05-05-19

BUY THE HARDCOPY - not the Audio

The value of this book is in the "How To," not the "Why."

They WHY is great for audio, although if you're already keto-savvy, you won't learn too much that's new. But WHY is the type of information one can absorb while driving or fixing supper. You can also get it on recent podcasts in which Dr. Mercola discusses about the book.
Audio is dismal for the HOW. The Good Doctor (and I mean that) (a) refers you to another book of recipes for exactly WHAT to eat, then (b) goes into L-O-N-G lists of various supplements to take and tests to monitor progress. SERIOUSLY? On Audio, without a companion PDF? It's bloody time consuming to start/stop the book to get everything written down, so I'm buying the hard copy.
Dr. Mercola is not alone here. For the same reason, I also bought the hard copy of Dr. Dale Bredesen's excellent Alzheimer's book after first trying audio. Some authors thoughtfully include a PDF of this type of information for their Audible listeners, but Dr. Mercola is not particularly generous. I mean, really, not even ONE "sample meal" for his keto fast? He does provide the number of grams of protein, carbs, and fat, so I suppose a sample isn't critical.
All in all, I recommend the book, but not the format.

66 people found this helpful

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  • Debbie
  • 13-06-19

Needs a .PDF

Nothing outstanding in this book, but I've been inundating myself with keto and IF books. The reader for this one is just so-so, but the most disappointing bit is that there's no .pdf to download. There was information throughout that I was sure would be in a .pdf, but there isn't one. For instance, he refers to a website over and over. I've searched for the website, but cannot find it. It should have been listed in resources in a .pdf.

18 people found this helpful

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  • farra
  • 09-05-19

Where is the pdf

I rated the book a 4. No recipes, or meal plans.I liked the fact he explained we should not stay on ket O forever. And he explained how to protect ourselves from toxins i have believed for a long time when overweight people lose weight some for cause their can,t handle the toxic load. Thought the book was very informative. Don,t like the fact now I have to buy his cookbook. I hope he has menu and recipes for all phases.

17 people found this helpful

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  • Steve McLeod
  • 11-05-19

It works

It’s impressive how much Dr. Mercola knows and cares. Appreciate the supporting knowledge and easy to understand summaries. Being fat adapter I did his fast last weekend. I’m 62 years old and blew my mind how I was able to crush-it In the weight room after the fast and Re-feed. I found the book helpful because there’s a lot of complexity to this emerging science This Book provides the info I needed to take my intermittent fasting To the next level thank you Dr. Mercola

14 people found this helpful

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  • Johnny
  • 15-05-19

NOT RECOMMENDED

The content is so shallow that it is really offensive to be sold as a book. There is nothing useful here, specially if you know a bit about keto. If you can't do keto, he won't explain how it works, you will have to buy his other books. If you know how the diet works, he will just say that while on keto a lot of pesticides and heavy metals will be released on your body. To get rid of them, you should do a ciclical keto diet (5 days keto, 2 days off keto and. If possible, one day of fasting) and buy a lot of products on his Website, like chlorella. I can't forget to mention that there are a good amount of advertising for Chronometer app, it's outrageous. Of course this small and shallow book doesn't have any of the keto meals to detox your body, you have to buy a separate book to have access to the receipts. SKIP IT.

18 people found this helpful

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  • Valentini Chousti
  • 27-05-19

Information but not guideline

It has lots of information about why you should fast but not any examples. I have to buy another book for the how

8 people found this helpful

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  • Timothy S. McHenry
  • 01-08-19

Why am I listening to this?

When the author starting going off on the best type of sauna to put in your house, I was done.

6 people found this helpful

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  • Alma
  • 15-10-19

Awesome info but seriously needs PDF

Loved the information but seriously needs a PDF to go along with it. Provide that and I'll change this to the all around 5 STARS it deserves.

3 people found this helpful

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  • henry
  • 30-04-19

lots of information

I will need to go through this book a few times to get most of the nuggets in it

2 people found this helpful

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  • Mrs. V
  • 29-10-20

A Five Hour Infomercial......

Honestly, the subtitle of this book is SO misleading. If anyone were to follow all of the recommendations in this book they would soon be broke and burnt out from the stress of it all! While Dr. Mercola stresses the importance of eating whole organic foods, the amount of supplements and partial food products he says are necessary is unreal! After you build your infrared sauna in your home, buy all of the supplements he recommends, get a food scale that is accurate to the nearest .01 gram, order all of your blood tests, get your ketone monitor, his companion cook book and another book he wrote that actually explains how to follow his diet AND sign up for his food tracking site -which has the ability to scan barcodes to input nutrition info, but he doesn't recommend that you use that feature because you won't have ALL of the nutrient information if you do it that way-, you will probably be too exhausted and broke to want to bother with weighing and measuring every single thing you put into your mouth so that you can track your macros to the very last gram!!!!
This sounds like the makings of an impossible to follow program, that he never really even fully explains! As for the "step by step guide" to timing your ketogenic meals, hmmmmmm, I must have missed that part! Eating healthfully, fasting, following keto, none of it needs to be even 1 tenth as complicated as this book makes it out to be. What a waste of an Audible Credit

1 person found this helpful