If you liked the film, you'll like the book.
Maybe when one came out, he should have offerred it in a 'make it large' format and get both?
OK it is biased against a particular firm, but that is stated and justified from the start. The value is in starting to open the eyes of the nutritionally sleepy to the junk food culture,which has been pushed onto us,and if we are not careful, we will push onto those we love.
It also raises what is to me an important ethos; that of questioning everything. Eventually, nutrition starts to become a matter of faith. That of deciding which particular truth seems most acceptable,and well backed up.
This is also raised in the book, highlighting the fact that much so called 'expert' guidelines and indeed government policy is created and dictated by those who do not ultimately have the consumer's best interests at heart.
It is also written in a style which is readable by many, but with enough factoids and referencing thrown in for a concerned reader to pursue their own research.
Good fun.