First of all, let's get something out first: books on trivia are never perfect. «Facts» are checked and re-checked constantly, that's how knowledge grows.
That said, my problems with this book are mostly in two categories. The first is that despite the research behind, there's still several examples of misinformation, misunderstandings and general editorialization of the facts presented.
(For instance, is not entirely true that «The FDA allows mold, wormy bits, and insect parts into our food in the first place», because that makes it sound like they condone it. It's more accurate to say that they establish safe limits because no one can ensure food is 100% "pure", 100% of the time, 100% an the way from producer to consumer. But I guess using languages like this is what sells books)
The second comes from how this book is written. Many of the facts presented here are padded out in a tiresome «True or false?» format, which gets old quickly and could better be presented in a simple and concise paragraph.
Instead of asking five times what is the first/second/third most whatever, just write out a Simone list of the top 5 whatever. This style just makes the narrator look like a smartass trying too hard to be cool.
Overall, good content, poor decisions in format.