"The Obesity Code", a new book out, while saying it's the final solution to weight problems, is nothing new. And, people, tired of dieting, are buying it rapidly off the shelves, over the internet, or whatever. I read a few reviews of it while deciding if I needed to add it to my always growing library on Weight Loss.
From what I can see, the meat of "The Obesity Code", pun intended, is intermittent fasting. You can fast...water only, or liquids or a bunch of ways. While I don't know what type of fasting is suggested in the book, it all amounts to basically no food... one day a week or one day a month or ??
That's supposed to keep off the weight forever. It's not new because I tried it in the 1970's. I lost about 25 lbs but eventually, I got horrendous cravings, couldn't stomach the fasting part anymore and regained the 30 lbs I'd lost and another 70, probably a result of a lowered metabolism and being really, over, fasting! :)
The only thing that really works to lose the weight and keep it off, is calorie restriction and portion control - for life. Staying away from calorie dense stuff like fast foods is a good idea or use the Gwen Schamblin method for fun foods, (from the book, WEIGH DOWN). That is, take one bite of a fun food, and chew it slowly, savoring it. Because as she rightly, points out, the first bite tastes the best and if we slow down enough to experience this, we can find out that this is very true. Gwen has kept several pounds off for many years and she enjoys her fun foods also.
We all have to experiment with things and see what works the best for us.
After trying just about everything else, I realized that calorie restriction and portion control is the only way that worked for me, to lose and keep off weight.
In 2008-2010 I lost 112 lbs, and have kept off 107 lbs ever since. I count my calories every day on My Fitness Pal, a great website which offers a free calorie counter and found that a small bite of treats or even programming small amounts into my day, keeps away the cravings monster.
Eating big portions of veggies with no butter etc, fills you up and no one ever got a weight problem from too many veggies!
Every "diet book" claims it's new and revolutionary because the diet-fatigued, overweight public craves an answer that is easier than daily calorie counting or restricting food amounts in some other way... but in reality, "there is nothing new under the sun".