Since becoming a(n almost) vegan, I've read a lot about food, diet and nutrition. This book is good for an overview of how to eat healthily, and the information is helpful for vegans, vegetarians and omnivores alike. However, I would think that anyone who is already a vegan or vegetarian would already know much of the information that is in the book. I didn't learn anything new. It would be more useful for someone who has just become or is thinking about becoming a vegan/ vegetarian. But it does make for a good quick guide for when, for example, you forget how much calcium is in an ounce of almonds.