This book has a lot of good information, but I would definitely recommend against listening to the audiobook. Much of this book is listing things which gets quite tedious to listen to. 
Something to note is that there seems to be quite a focus on weight. He repeatedly says to weigh yourself every day to keep yourself on track with weight-loss or maintenance/keep yourself honest. This is just unhealthy, and can lead to disordered eating. He also uses BMI as a health indicator which seems to have been largely discredited even when this book was written a few years ago. 
If eating or weight-loss are sensitive topics for you, this might not be the best book for you to pick up.
*There are religious aspects to this book (Christianity).