But ultimately why believe him instead of some other scientist? Because his book is thicker? I also noticed that he had a bit of a tummy when I saw a YouTube video of him.
I've read another thick book advocating plant based diets and metaanalyzing lots of studies, The China Study. GC,BC is a bit thicker, though.
I think I already gave you the answer: Taubes' book is a comprehensive meta-study that examines the merits and pitfalls of most prominent studies in the field of nutrition science. This allowed him to draw broader conclusions than any specific study.
Really though, you just have to read it, apply your critical thinking skills to it, and make up your own mind.
I've read another thick book advocating plant based diets and metaanalyzing lots of studies, The China Study. GC,BC is a bit thicker, though.