Two decades ago my allergist told me to give up wheat, milk products, soy, yeast, citrus and sugar. I did and initially I lost weight. Eventually I gained it back. But yes, if you give up the most common foods in the western world, you will probably lose weight because you won't enjoy eating and you'll have difficulty finding ample quantities of food to eat. You'll become very focused (some would say obsessed) on what to eat and may lie awake at night thinking about it. You'll have to carry strong eyeglasses with you when you shop so your can decipher all the labels.Instead of the foods I started with, JJ Virgin lists 7 foods to drop: corn, eggs, peanuts, dairy, gluten, soy, and sugar (including artificial sweeteners).  You can do this IF you rarely eat out, avoid social events, and live in the right place. The right place is Southern California or some other warm climate where a variety of fresh foods is always available. Believe me, there are plenty of places where it is just about impossible to find decent veggies in the winter! I find myself standing in the produce section wrinkling my nose at the pitiful selection of bruised and past-ripe items. So I would wait until summer to try this diet.Except that I've been living with most of the restrictions for years. After the initial diagnosis of food allergies, I followed my doctor's instructions carefully but still had digestive problems. Eventually I learned that I could not tolerate peanuts or corn, plus most fruits, many spices, and a host of other items. So by the time I read the book I was already on her plan for the most part. I did eat eggs occasionally and I had added sugar back in because it is just too hard to avoid forever. Probably it would be easier in southern California, but here in rural Virginia the items available in stores are limited. Our health food stores are tiny and farmers markets are closed in the winter months.But enough whining! There are some good things about the book! It popularizes a list of common allergenic foods, and a number of people will discover allergies or intolerances from trying this diet. No doubt some readers have already gone gluten-free and given up wheat; it's kind of a fad right now. And Ms. Virgin is correct in cautioning us to be wary of gluten-free substitute foods because many of them are high in carbs and sugars.To her credit, she mentions in two places that the diet may not improve your symptoms if you have SIBO, candida, parasites, or "poor digestion." I've had all those and indeed you should consult a medical practitioner to help sort out those conditions. However, I found some of her other assertions to be simplistic. So don't expect science here; this is more of a self-help book.I was put off by her claim that all of her clients were helped by this program. I imagine she is not counting the diet drop-outs and I'll bet there were more than a few! And I'd be interested in knowing how many people gained the weight back after a year or two.Still, if you are highly motivated and self-disciplined, you may very likely drop the promised 7 pounds, at least for now.  And you may discover that certain foods cause symptoms that you will be glad to put behind you.The book is easy to understand and attractively presented, at least in the hardcover edition. The fonts are readable and charts serve as illustrations. The clients' stories are repetitious but may help inspire you. So I give this an above-average rating in spite of my reservations about long-term results. 

Question: How is book?
Answer: The book is easy to understand