I bought this one for me, but I haven't been able to get near it. My five and seven year old girls ripped it straight from my hands as I unpacked it. It's easy to see why with such extraordinary illustrations lavished throughout. The girls then proceeded to press my wife and I on every detail on page after (slightly explicit) page. If you feel a sense of awe over the inner workings of the human body, and would like to share that with your young family, then I cannot recommend this book highly enough.