I have yo yo dieted for 45 years and had got to the point where I was permanently on a diet, just so as to not put weight on!,... It appears that I am not alone!... it seemed like I would never be able to lose any more weight, no matter how hard I tried! This book changed all that! It is an easy to read scientific explanation as to how so many of us have messed up our delicate hormonal balance with years of yo yo dieting. Every other diet out there will tell you to have a healthy, in between meal snack, to keep your sugar levels balanced - this is the worst possible advice, ever! Basically, one should only 3 meals a day, with enough protein to keep you going between meals. It is vital to leave 5 to 6 hours between meals and 11 - 12 hours at night (eating dinner at least 3 hours before bedtime). This rebalances the hormone, leptin, which kicks the body into fat burning mode! I did not have a vast amount of weight to lose but in the first 6 weeks of this diet I lost 6 kilos! I feel better than I have done in decades and the BIG BONUS is that I have more than halved my cholesterol levels, which were extremely high, WITHOUT TAKING STATINS! My doctor can't believe his eyes!!! This is the best diet book - EVER!