Book Find: Expecting Better

I just read a very interesting book on conception and pregnancy called "Expecting Better" by Emily Oster. I love research and statistics, and this book really breaks down some of the questions we all have into clear numbers (think "1 in 100 women" instead of a general term like "very few women") based on the many, usually unpalatable, medical trials and studies out there. Take the info with a grain of salt (as you may strongly agree or disagree with some of the suggestions AND the author is an economist, not an MD), but it was a fun, light read for a numbers/research junkie like me! Anyone else have any good book suggestions?