This book is chock full of all the information someone needs to heal themself.
Unfortunately unless you are wealthy, some of the advice is impratical because of the expense and effort it takes. Which is exactly why so many face health issues in the first place- being healthy is a luxury. Good, healthy organic food is expensive and time consuming to store and make. Clean water can be an issue, too.
However implementing any of the healty alternatives in this book is better than none and there are creative ways around everything.
Take what advice you can and make it work for you. I plan to because I am at a point in my life where change needs to happen.