I read the entire book and I found it interesting, informative, and very useful as I take on my hair journey. I knew a little about eating healthy but this book gives all the necessary information not only about hair health but also body health. I have had cancer twice and I am more conscious of my diet and after reading this book it is more of an incentive to take seriously what I need to put in my body. I highly recommend this book as it has helped me a great deal.