For me this is a yes and no. It may well be that this book is onto the truth, but the way it is brought is just by spreading angst. Chapter after chapter of this is wrong, your environment is making this hard, it is surrounding you, etc. It gives the solutions at the end, which are still a bit vague, lifestyle changing and not at all comforting.
So spoilers, change how you eat, and have fun with stuff like exercise and cooking. For the rest of your life. Any meals that are easy, are out the window. Good luck.