It's definitely worth reading. I don't think she was particularly lying about anything, the book just contains some fundamental errors like most published books do. I haven't read it for a while but I remember the nutrition and environmental sections had errors. You definitely don't doubt her passion. It shouldn't be held up as some kind of bible that debunks vegetarianism nor should it be thrown into the book burning mobile like most vegans think it should. I think the accusations of lying were regarding about being a fully fledged vegan. I remember in an interview she said something about how she binged on eggs and dairy a lot.