Then there's Spotting Bad Science 103: The China Study

The China Study we will dissect is not actually a study at all.
It's a book. The research it claims to present was well
designed, to the extent that a large-scale observational study
can be. Given the constraints, it was good science. The
subsequent book, in contrast, has been used as a vehicle for
convincing the public of black-and-white conclusions that
aren't justified by the China-based studies for which the book
is titled.