My mother tried the HCG diet 20 years ago.  She lost 20 lbs in a few short weeks and never thought another thing about it until I told her I would be trying it 15 years later.  I have lost over 45 lbs and kept it off for 5 years but I did not lose it all because of HCG.   It did however kick off the massive behavior modification that was necessary for my weightloss. 

Before you start thinking, "is this a review or biography..." It's a review.  The book outlines some essential information about HCG.  More importantly, it challenges the age-old belief that all "cleansing" or very low cal diets will inadvertently result in a weight gain of weight lost + 10 lbs.  Rather, it introduces the idea that people 30 lbs over weight might not be heavy because they're watching television all day, but because their metabolism is naturally slow and refuses to release stored fats without extreme, starvation diets and excessive exercise- or the supplemental approach using HCG.  Used correctly, this book can be an essential eye-opener to the average dieter that has "tried every diet." 

Check out hcgdietinfo.com or better yet, do a search on HCG at googleforweightloss.com (it weeds all the non-weightloss related information so you don't have to weed through pages of fertility results) and you'll find that HCG is proving to be a huge success in the diet and weightloss industry.  If for nothing else, this book should be taken as a step in strategic weightloss efforts- afterall, it's about finding what works for you.