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Who Switched Off My Brain?

4.13  ·  Rating Details  ·  624 Ratings  ·  97 Reviews
Self Help through scripture controlling toxic thoughts and emotions throughout ones life.
Unknown Binding, 139 pages
Published 2007 by Switch on your brain (first published 2006)
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(showing 1-30 of 1,800)
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Cassie Shepherd
Mar 23, 2011 Cassie Shepherd rated it really liked it  ·  review of another edition
This was a great book with some inspiring ideas. I loved how Leaf used her Christianity beliefs in companion with her scientific knowledge. She even helped me see a different meaning behind some specific scriptures. Leaf explains the science of the brains chemistry in an extremely easy way to understand. Coming from someone who has anxiety and is always stressing about something, I feel like Leaf offers a lot of solid ideas for learning how to change thoughts and control unhealthy emotions. Even ...more
Dec 30, 2008 Diane rated it it was amazing  ·  review of another edition
Shelves: self-help
Our daughter, Bridget, gave me this book for Christmas. There are only 138 pages in this book. I couldn't put this book down. In fact, I read it in just a few hours today. Dr. Leaf states that reserachers say that 87% of the illnesses that plague us today are a direct result of our thought life. Once you read what she has to say on how your brain works and what happens to your body when we think negative thoughts, you can't wait to get to the last chapter and learn the steps to controlling your ...more
Feb 20, 2012 Rowena rated it it was amazing
I had the honour of hearing this enthusiastic and knowledgeable author speak at my Church over a period of three days.I even got a copy of my book signed:) I was in awe by how she used her psychological research to prove the word of God. The main focus of the book is how thoughts affect our brains; toxic thoughts can physically and emotionally harm us. The good news is that we are able to transform our way of thinking and live more positive, fruitful lives.

Although the writer is a PhD, the book
Sep 14, 2014 Karl rated it it was amazing
If I were to summarize “Who Switched off my Brain?”, in one sentence, it would be that: toxic (negative) thoughts, and the emotions that they are associated with, will physically alter the human body in a harmful way and by becoming aware of this process we can implement strategies to reduce negative thinking and moderate the corresponding chemicals that harm us.

At a more in-depth level, Dr. Caroline Leaf starts the book with an explanation of the physical process that takes place in our brain
May 09, 2012 Jim rated it it was ok
This book sort of felt like quasi-science. There were mentions of studies done and research shows this but there was no reference to what studies these were or who did them.

While I think there are some good things in this book and that I agree with the fact that our thoughts and emotions can affect our physical well-being, I don't agree with it to the extent that the author holds to be true and that we just need to change our thought patterns to become healthy again. There definitely seems to be
Karen & Gerard
I found this to be fascinating and very helpful. I am interested in scientific research that relates to my everyday life which is in abundance in this short book about the brain. The beginning chapters were pretty technical and had a lot of words related to the brain that I am unfamiliar with so that part dragged along a bit for me. However, after reading those beginning chapters, I have a much better understanding of how thoughts are processed and stored.

Caroline Leaf goes into a lot of detail
Thomas Hadley
Jan 21, 2013 Thomas Hadley rated it it was amazing
This is, by far, the most practical book on cognitive development and mind change I have ever read. The practical five step process she developed is very simple and very powerful to use. I have had mental breakthroughs using her system that I have needed for decades.

Not only does she offer the practical system, she goes into great detail (but not too confusing detail) into how and why our thoughts have the effect that they do on our brain cells. This detail allows us to have confidence in apply
Aug 30, 2010 Fed rated it it was amazing
Very good book. I would recommend it to everyone who wants to understand how the mind and the power of our thoughts/words work. The author is a Christian psychologist/therapist, but she does not push Christianity, she just states that she is a Christian and that works for her. She believes that faith is an important component for a healthy life/mind, and challenges the reader to find their own belief system.

Dr. Leaf's way of explaining scientific/medical processes is simple, and all audiences co
Mar 23, 2009 Starlight rated it it was ok
Recommends it for: Those who experience emotions, and can get past smarmy illustrations.
Recommended to Starlight by: Momma
So, this book makes some really good and interesting parallels between the human brain, emotions, memories and health. But I felt that it was written badly. Yes, the brain is complicated, and yes - it probably needs to be oversimplified for most people to understand it, but the particular approach to writing on this topic, by this author, was wildly distracting. LOVED the topic and fully recommend it for EVERYONE. LOoooathed the writing style. And the illustrations. Aungh.
Feb 08, 2011 Erika rated it did not like it
Recommends it for: no one
I really tried to get into this and I thought it would offer real insight. At best it was warmed over info that you could get from any self help book wrapped in a neuroscience disguise.

May 16, 2009 Leo rated it it was amazing
Recommends it for: Yes
Now you know why Christ said to put the mind on good things.
Mar 29, 2011 Amanda rated it really liked it
3 1/2 - 4 stars

This book is quite an eye-opener! Dr. Caroline Leaf takes you on a journey through each step of a thought and breaks down each specific place in the brain (and body) it affects. It would appear the entire body - what it feels, how it performs, it’s very framework, even our DNA - can and will be affected by our thoughts, be they positive or negative.

“Who Switched Off My Brain?” was really good, and very fascinating in the medical sense. Dr. Leaf explains the big, “doctor words” an
Elizabeth Pruett
Sep 19, 2015 Elizabeth Pruett rated it really liked it
Know you stress out too much but don't know what to do about it? Or perhaps you suffer from headaches (as I have) or another physical ailment and want to fix the problem -- not just cover it with pain medication, which often fails anyway? Who Switched Off My Brain, is the book for you. I am realizing more and more how much I have internalized my stress throughout my life, and I have paid for it with tight muscles, tension headaches, and skin problems. This book addresses the science behind how o ...more
Debbie Fox
This book is revolutionary! I love that God has shown Dr. Caroline how science is matching up with what the Bible has said all along! Fascinating!
Feb 19, 2015 Katie rated it really liked it
Is really insightful about the brain. A short book that will help you improve your life. I would definitely recommend.
Nov 09, 2015 Seantaneous rated it it was amazing  ·  review of another edition
This one right here is an eye-opener. Caroline Leaf is professionally qualified to intertwine scripture and science. Who Switched Off My Brain is a very practical yet informational book about how our brain works and why we suffer the things we do mentally and physically. She goes into great detail about toxic thoughts. The beauty of this book is that it is not preachy but grounds itself in what God has already said, which is in my opinion true science; unfolding the world around us that God crea ...more
Roxane Lapa
Dr Caroline Leaf is a brain scientist who has specialized in the science of thoughts for over 20 years. She is also a Christian. In this book, she explains scientifically (though in layman's terms) how our thoughts affect our bodies, and even our genes (epigenetics). She shows how to utilize this knowledge to better our mental and physical health.

Some minor annoyances...

She throws in Bible verses here and there that are pertinent to what she is discussing, but not always taken in context to the
Bob Flores
Nov 07, 2012 Bob Flores rated it liked it
OK so there were some great things about this book and there were some not so great things!


This is a great book if you would like a basic introduction to brain function and neurochemistry. Actually this is the one of the most basic, but "get to the point" books on the subject I have read. I got very excited to know that I can actually change my thinking far before it becomes toxic or even a part of me. Seeing how this is done was refreshing. This book also gave me insight on the process of
Liebes Buch
Sep 15, 2013 Liebes Buch rated it really liked it
Bücher über das "Positive Denken" werden meist von Ex-Schauspielern oder Ex-Models geschrieben, die damit ihren Erfolg erklären oder das spirituelle Finden eines Parkplatzes anpreisen. Diese Bücher sind sehr beliebt. Ich mag sie nicht so gern. Caroline Leaf ist kein Ex-Promi, sondern eine Doktorin der Communication Pathology und Christin. Aufmerksam wurde ich auf ihre Arbeit durch ein Interview, in dem sie über die Individualität unserer Gehirne sprach. Ihr Buch "Wer hat mein Gehirn ausgeschalte ...more
Daniel Keohane
Apr 10, 2014 Daniel Keohane rated it it was ok
This wasn't bad, if anything was probably too short a book. The first half Leaf explains how the brain and nervous system works in pretty-much laymon's terms, so it was easy enough to follow. What I expected for the second half was how to apply this knowledge of the brain to changing thinking patterns and behavior, but really, it was a list of things/behaviors to do and change to better your life and behavioral habits, but these suggestions were simply a paragraph or two (sometimes couple of pag ...more
Jul 21, 2015 Jorge rated it it was ok
The first part of the book is great, with a lot of good information about brain function. I like how the author supports much of her findings on Biblical teachings.
The second part of the book is way too repetitive, to the point of copying complete paragraphs. This is a lack of respect for the reader.
Heidi Wiechert
Oct 08, 2013 Heidi Wiechert rated it liked it
Shelves: non-fiction
The Goodreads description of this book surprised me. The author quotes the Bible maybe a handful of times. I wouldn't describe this as a scriptural guidance book so much as a book about the brain with the occasional Biblical quote thrown in.

Leaf does a great job of breaking down how the brain creates and stores memories. She discusses: why we save some memories and not others, how to form new memories, and how children are affected by their brain chemistry. Chapter Six, detailing coping mechanis
Kristy Hill
Oct 02, 2015 Kristy Hill rated it it was amazing
Dr. Caroline Leaf has a passion for the brain and for brain research, so I immediately connected with this book. Full of the science behind toxic thoughts and how they literally alter the brain.... Fascinating.... I'm looking forward to reading her next book.
Mandi Friedman
Oct 20, 2012 Mandi Friedman rated it really liked it
At first I was worried that this book was going to be term-heavy when Dr. Caroline Leaf was describing the thought process. But she broke down the process in an understandable way without being overwhelming. I liked in this book how she listed off what toxic thoughts do to us, and she told us how to overcome them. I feel ready to take on the challenge, and not just in my head with my brain, but in my heart as well. As having suffered from divorced parents, I stuffed my feelings, and have since ...more
Apr 26, 2016 Rachel rated it liked it
I enjoyed this book--she has a lot of things to say about how what we think can affect our bodies. However, I was left wanting. I need some more tips on how to apply this. The chapter on application was much too short.
Lori Webster
Apr 01, 2015 Lori Webster rated it really liked it
Shelves: 2015
First couple of chapters are full of scientific explanations. Once you get past that it shares much about how you can control your brain.
Emma Adams
Dec 28, 2014 Emma Adams rated it really liked it
Very interesting. Many facts that I was unaware of before the author enlightened me.
Sep 15, 2015 Carmen rated it it was amazing
I recommend this book to anyone who is stuck on negative thinking. Great insight as to why you need to turn that thought around.
Apr 28, 2016 Rachel rated it it was amazing  ·  review of another edition
I love Dr. Leaf so much! Her teachings have really helped me.
Feb 16, 2015 T J rated it liked it
Christian based book on positive thinking and how our brains work.
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