If you are a beginner to the field of nutrition, this book will give you a good start. But for any one that may have some basic knowledge of nutrition and wants to further expand his/her understanding of the field, SAVE YOUR MONEY. I expected a lot more from the book but found it to be a repeat of many similar books (but with a different cover and advertisement). If you are a strength trainer, athlete, or involved in any serious workout/sports, I recommend Dr. Michael Colgan's "Optimum Sports Nutrition" which is by far a better book (maybe even the best book) in giving comprehensive and scientifically proved ways to enhance yourself. Dr. Colgan's book covers nutrition, fat loss methods, supplements, and even workout plans!! Good Luck!