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This is not my first review of one of Mary Roach books, but with each one I write, I become more and more convince she owns that particular shelf where books that are totally nerdy, highly entertaining and myth debunking sit, waiting for our eager eyes.

In this particular book, Roach centers her researching and fun-loading skills on our digestive system. From the mouth to the other end, the infamous anus, she tells it all.

Why are we repel by saliva that is not ours, or even by our own saliva once it's cold, but we can kiss a person in the mouth without a second thought (if we like that person, of course)? That is only one of the many questions Roach uses as an excuse to explain all the intricacies behind eating and surviving from what we eat.

Along the pages we travel from Elvis Presley's house, learning of his death and the bad hand his intestine dealt him, to Holland where a scientist, who always has lunch at home, explain how our stomach produces all the chemicals that turn food into its minimal components.

I deeply enjoyed this book, as I've enjoyed every other book I've read from Mary Roach. I have an almost sentimental attachment to her foot notes, often hilarious while illustrative, and I think that anyone with the slightest of naturalistic curiosity may enjoy this book, too.