This is a well-researched book with loads of interesting information that develops organically. The author sticks to science instead of writing with an agenda, and is careful to point out flaws in studies that have led folks to make false conclusions. I ended up DNF-ing this book, though, simply because it wasn't punchy enough to keep me entertained during my commute. That's okay! It's mostly a case of wrong book in the wrong setting. Still, five stars for all the content I did get through.