This is a brief review of the 3rd edition published in 2012. I am a physician with a minor in nutrition science back in college. I train in swimming, cycling, and running (triathlon).
If you are looking for a "For Dummies" book on endurance nutrition or something with a little bit of everything, then this book will meet that need. However, if looking for a whole lot of detail, then you may be a little disappointed in a few chapters but this is only because the subject of nutrition is Huge and I'm sure only so much can be put into a ~400 page book.
In my opinion, the first 3 chapters can be entirely skipped, unless you are starting with knowing nothing at all about basic nutrition in which case these chapters may serve as a good start for you.
Chapters 4 and 5 are most useful chapters and contain the real info that most readers will be looking for. However, some of this information has been covered in some popular general Triathlon training books. That being said, these chapters in this book expand beyond what you'll find in The Triathlete's Training Bible or Going Long: Training for Triathlon's Ultimate Challenge (Ultrafit Multisport Training Series). I am quite sure I'll be going back to these two chapters again and again in the future.
I've skipped Chapter 6 to read later so can't comment on that yet but skimming through it looks like it'll be worthwhile to read.
The section on Ergogenic aids (chapter 7), I found concise and confirmed what I think most well read athletes should already know so worth reading if you aren't familiar with these yet.
The remaining 7 chapters are specific to certain sub-groups of athletes and so chances are only one or two may pertain to any one reader; I've read a couple of them and found a couple pieces of good information but some readers might find them more useful depending on your needs (see chapter titles below).
I didn't actually realize until after reading 60% of the book, but there is a selected bibliography at the end. It would be nice to have that bibliography referenced in some way to make it a little easier for the reader to pursue more detailed information if they so choose.
One HUGE pet peeve of mine that totally drives me insane and I just can't write a review without mentioning it. The default units used throughout the text is to use the English system of measurements often mixed with metric; it gets very confusing when most anything else you'll read on the subject will state something like 1g/kg of "X" and be reading a section where you already know this but then get tripped up by seeing something like 0.5g/lb.
Anyway, this is not a bad book at all and tries to cover a whole bunch of information. In doing so, it's likely to have a little "something for everyone"; however, I would like even more in depth regarding some of the hard science and clinical studies behind sports endurance nutrition. Though, to be fair, I think this book does a good job overall and will meet the needs of > 90% of whom I'd suspect to be the usual readers on this topic.
Chapter 1: Daily Hydration Essentials
Chapter 2: Energy Nutrients for Optimal Health and Performance
Chapter 3: Vitamins, Minerals, and Electrolytes
Chapter 4: Your Training Diet
Chapter 5: Food and Fluid Intake for Training and Competition
Chapter 6: Weight Loss, Muscle Building, and Changing Body Composition
Chapter 7: Ergogenic Aids
Chapter 8: Nutrition for Triathlon
Chapter 9: Nutrition for Cycling
Chapter 10: Nutrition for Distance Running
Chapter 11: Nutrition for Swimming
Chapter 12: The Athelete with Unique Nutrition Considerations
Chapter 13: Performance Boosts and Problem-Solving with Nutrition
Chapter 14: Nutritional Strategies for Extreme Environments