I have gleaned some good information from these books. Some are "diet" style of book, but some of their concepts are interesting. I think they are worth a look. I've just started tracking my food, starting January 1st and I'm down 8 pounds already, without exercising. (can't at the moment due to an injury)
1) The Ultimate Volumetrics Diet by Barbara Rolls, (2012)
2) The G.I. Diet by Rick Gallop (talks about how the glycemic index of foods affects your blood sugar and what foods you should eat to keep it level)
3) Tosca Reno - series of Clean Eating diet guide and recipe books
4) The Looney Spoons Collection - Janet & Greta Podleski. This is a low fat cookbook with lots of great recipes and nutrition tips and facts galore. Check out their website Home - Janet and Greta Podleski
for examples of their recipes and sign up for their newletter. They will send out e-mails of new recipes that they develop for you to try. They have sold over 2 million cook books in Canada and their newest book is a compilation of their first three cook books with updated nutritional information. They are now selling it in the US.
Worth a look if you can find them. Hope you find something useful there. I did.